Especificaciones Técnicas Acero y Concreto

  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto1/49Y:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOCSociedad Minera Cerro Verde S.A.A.Primary Sulfide ProjectProject No. PSP108Structural Concrete andReinforcingConcreto Estructural yRefuerzoSpecification No. C-CS-15-011Rev. 010 May 2005
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto2/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 1 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALThis document has been revised as indicated below. Changes afterrevision 0 are identified by vertical bars at theright side of thepage, with additions being underlined. Please replace all pages ofthis specification and destroythe superceded copies. English is the prevailing language ofthis document.RevNo.Originator(name/initials)RevDateRevision DescriptionC Tim Chan 18Jan05 Issued for Approval0 Tim Chan 10May05 Issuedfor ConstructionNew Issue Entire Specification Re-issuedAPPROVALS ORIGINAL SIGNED BYFLUOR DATE CLIENT DATEProject Manager:Engineering Manager: Brad Matthews 10May05Area Project Engineer: Manuel Echevarria 10May05Lead Discipline Engineer: Tim Chan 10May05Process Approval:
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto3/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 2 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALTable of Contents1.GENERAL…………………………………………………………………………………………………………………………………31.1Summary……………………………………………………………………………………………………………………………………31.2References…………………………………………………………………………………………………………………………………31.3 Pre-ConcreteConference…………………………………………………………………………………………………………….61.4Submittals…………………………………………………………………………………………………………………………………..61.5 Delivery……………………………………………………………………………………………………………………………………..72. PRODUCTS………………………………………………………………………………………………………………………………82.1General………………………………………………………………………………………………………………………………………82.2Materials…………………………………………………………………………………………………………………………………….92.3 Design Criteria………………………………………………………………………………………………………………………….132.4Concrete Mixes…………………………………………………………………………………………………………………………143.EXECUTION…………………………………………………………………………………………………………………………….153.1Preparation……………………………………………………………………………………………………………………………….153.2 Installation………………………………………………………………………………………………………………………………..163.3Testing……………………………………………………………………………………………………………………………………..223.4 Field QualityControl…………………………………………………………………………………………………………………..234.ATTACHMENTS………………………………………………………………………………………………………………………241. GENERALIDADES…………………………………………………………………………………………………………………..261.1Resumen………………………………………………………………………………………………………………………………….261.2Referencias………………………………………………………………………………………………………………………………261.3Reuniones Previas a la Colocacin del Concreto………………………………………………………………………….301.4 Remisiones………………………………………………………………………………………………………………………………301.5Entrega…………………………………………………………………………………………………………………………………….312.PRODUCTOS…………………………………………………………………………………………………………………………..322.1Generalidades…………………………………………………………………………………………………………………………..322.2Materiales…………………………………………………………………………………………………………………………………322.3 Criterios deDiseo…………………………………………………………………………………………………………………….372.4 Mezclas de Concreto…………………………………………………………………………………………………………………383.EJECUCIN…………………………………………………………………………………………………………………………….393.1Preparacin………………………………………………………………………………………………………………………………393.2Instalacin………………………………………………………………………………………………………………………………..393.3Ensayos……………………………………………………………………………………………………………………………………463.4 Control de Calidad enCampo……………………………………………………………………………………………………..474.ANEXOS…………………………………………………………………………………………………………………………………48
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto4/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 3 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL1. GENERAL1.1 SummaryThis specification prescribes requirements for cast-in-placeconcrete construction.A. Scope of Specification1. Construction of plain and reinforced concrete work.2. Sampling, testing, and inspecting concrete and concreteconstruction.3. Placing anchor bolts and embedments for structural items.4. Detailing, providing fabrication, and placing steel barreinforcing, including reinforcingsupports and accessories.5. Design, supply and installation of formwork for concretestructures.B. Related SpecificationsThe following specifications prescribe items of relatedwork:1. C-CS-15-031 Grouts2. C-CS-15-032 Fabrication of Structural and MiscellaneousSteel3. C-CS-15-033 Erection of Structural and MiscellaneousSteelCoordinate Work prescribed by this specification with Workprescribed by the above listedspecifications.1.2 ReferencesThe publications listed below form part of this specification tothe extent referenced in thisspecification. Each publication shallbe the latest revision and addendum in effect on the datethisspecification is IFC (Issued for Construction) unless notedotherwise. Except as modified by therequirements specified hereinor the details of the drawings, work included in this specificationshallconform to the applicable provisions of these publications. Ifthere is a discrepancy between thereferences and thisspecification, the most stringent requirement shall govern.A. ACI (American Concrete Institute)1. ACI 270R Mass Concrete2. ACI 211.1 Standard Practice for Selecting Proportions forNormal, Heavyweight,and Mass Concrete3. ACI 211.2 Standard Practice for Selecting Proportions forStructural LightweightConcrete4. ACI 214 Recommended Practice for Evaluation of Strength TestResults ofConcrete5. ACI 301 Specifications for Structural Concrete6. ACI 302.1R Guide for Concrete Floor and Slab Construction7. ACI 304R Guide for Measuring, Mixing, Transporting, andPlacing Concrete
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto5/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 4 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL8. ACI 304.2R Placing Concrete by Pumping Methods9. ACI 305R Hot Weather Concreting10. ACI 306R Cold WeatherConcreting11. ACI 308 Standard Practice for Curing Concrete12. ACI 315 Details and Detailing of Concrete Reinforcement13. ACI 318/318R Building Code Requirements for StructuralConcrete (ACI 318) andCommentary (ACI 318R)14. ACI 347R Guide to Formwork for Concrete15. ACI 504R Guide to Sealing Joints in Concrete Structures16. ACI SP-15 Standard Specifications for Structural Concretefor Buildings (ACI 301)with Selected ACI and ASTM References17. ACI SP-66 ACI Detailing ManualB. AISC (American Institute for Steel Construction)Code of Standard Practice For Buildings and BridgesC. ASTM (American Society for Testing and Materials)The standards of the American Society for Testing and Materialsare listed under Section 1.4 ofACI 301 and are declared to be apart of these specifications, the same as if fully set forthherein.In addition, the following form a part of this specification to theextent referenced:1. ASTM A82 Standard Specification for Steel Wire, Plain, forConcreteReinforcement2. ASTM A184/A184M Standard Specification for FabricatedDeformed Steel Bar Matsfor Concrete Reinforcement3. ASTM A185 Standard Specification for Steel Welded WireFabric, Plain, forConcrete Reinforcement4. ASTM A497 Standard Specification for Steel Welded WireFabric, Deformed,for Concrete Reinforcement5. ASTM A615/A615M Standard Specification for Deformed and PlainBillet-Steel Barsfor Concrete Reinforcement6. ASTM A767/A767M Standard Specification for Zinc-Coated(Galvanized) Steel Barsfor Concrete Reinforcement7. ASTM A775/A775M Standard Specification for Epoxy-CoatedReinforcing Steel Bars8. ASTM A820 Standard Specification for Steel Fibers forFiber-ReinforcedConcrete9. ASTM C29/C29M Standard Test Method for Unit Weight and Voidsin Aggregate10. ASTM C31/C31M Standard Practice for Making and CuringConcrete TestSpecimens in the Field11. ASTM C33 Standard Specification for Concrete Aggregates12. ASTM C39 Standard Test Method for Compressive Strength ofCylindricalConcrete Specimens
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto6/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 5 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL13. ASTM C40 Standard Test Method for Organic Impurities in FineAggregatesfor Concrete14. ASTM C88 Standard Test Method for Soundness of Aggregates byUse ofSodium Sulfate or Magnesium Sulfate15. ASTM C94 Standard Specification for Ready-Mixed Concrete16. ASTM C109/C109M Standard Test Method for CompressiveStrength of HydraulicCement Mortars (Using 2-in. or 50-mm CubeSpecimens)17. ASTM C117 Standard Test Method for Materials Finer Than75-Micrometer(Number 200) Sieve in Mineral Aggregates byWashing18. ASTM C123 Standard Test Method for Lightweight Particles inAggregate19. ASTM C127 Standard Test Method for Specific Gravity andAbsorption ofCoarse Aggregate20. ASTM C128 Standard Test Method for Specific Gravity andAbsorption ofFine Aggregate21. ASTM C131 Standard Test Method for Resistance to Degradationof small-Angeles Machine22. ASTM C136 Standard Method for Sieve Analysis of Fine andCoarseAggregates23. ASTM C138 Standard Test Method for Unit Weight, Yield, andAir Content(Gravimetric) of Concrete24. ASTM C142 Standard Test Method for Clay Lumps and FriableParticles inAggregates25. ASTM C143 Standard Test Method for Slump of Hydraulic CementConcrete26. ASTM C150 Standard Specification for Portland Cement27. ASTMC171 Standard Specification for Sheet Materials for CuringConcrete28. ASTM C172 Standard Practice for Sampling Freshly MixedConcrete29. ASTM C173 Standard Test Method for Air Content of FreshlyMixed Concreteby the Volumetric Method30. ASTM C227 Standard Test Method for Potential AlkaliReactivity of Cement -Aggregate Combinations (Mortar-BarMethod)31. ASTM C260 Standard Specification for Air-EntrainingAdmixtures forConcrete32. ASTM C289 Standard Test Method for Potential Alkali-SilicaReactivity ofAggregates (Chemical Method)33. ASTM C295 Standard Guide forPetrographic Examination of Aggregates forConcrete34. ASTM C309 Standard Specification for LiquidMembrane-FormingCompounds for Curing Concrete35. ASTM C330 Standard Specification for Lightweight Aggregatesfor StructuralConcrete36. ASTM C494 Standard Specification for Chemical Admixtures forConcrete
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto7/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 6 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL37. ASTM C595 Standard Specification for Blended HydraulicCements38. ASTM C618 Standard Specification for Coal Fly Ash and Raw orCalcinedNatural Pozzolan for Use as a Mineral Admixture inPortlandCement Concrete39. ASTM C882 Standard Test Method for Bond Strength ofEpoxy-ResinSystems used with Concrete by Slant Shear40. ASTM C1017 Standard Specification for Chemical Admixturesfor Use inProducing Flowing Concrete41. ASTM C1157/C1157M Standard Performance Specification forBlended HydraulicCement42. ASTM D75 Standard Practice for Sampling Aggregates43. ASTM D412 Standard Test Methods for Vulcanized Rubber andThermo-plastic Rubbers and Thermoplastic Elastomers – Tension44. ASTM D512 Standard Test Methods for Chloride Ion inWater45. ASTM D624 Standard Test Method for Tear Strength ofConventionalVulcanized Rubber and Thermoplastic Elastomers46. ASTM D994 Standard Specification for Preformed ExpansionJoint Filler forConcrete (Bituminous Type)47. ASTM D1056 Standard Specification for Flexible CellularMaterials – Sponge orExpanded Rubber48. ASTM D1751 Standard Specification for Preformed ExpansionJoint Filler forConcrete Paving and Structural Construction(Nonextruding andResilient Bituminous Types)49. ASTM E329 Standard Specification for Agencies Engaged in theTestingand/or Inspection of Materials Used in ConstructionD. NRMCA (National Ready Mixed Concrete Association)Checklist for Ready Mixed Concrete Production FacilitiesE. OSHA (Occupational Safety and Health Act)1.3 Pre-Concrete ConferenceConcrete Supplier, Construction Manager, Concrete Contractor,Admixture Supplier, TestingLaboratory, and the Owner shall meetbefore submittal of mix design to review specifications,discussdetailed requirements for preparing mix designs, and toestablish proper construction procedures.1.4 SubmittalsA. The Contractor shall submit 1 copy of thefollowing documentation to the Owner for review andapproval 14 days prior to placing any concrete, or as requiredby Project requirements:1. Mix DesignsMix designs shall be proportioned in accordance with Section 4of ACI 301. Submit mixdesigns for each combination of ingredientson each class of concrete for review.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto8/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 7 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL2. Trial batch qualification test results, or complete standarddeviation analysis based onprevious field experience.3. Ingredients test results or certifications, including watertest reports.4. Compressive strength results.5. Material suppliers, sources, properties, and certifications.Certifications include but notlimited to cement certifications,mineral additive certifications, fine and coarseaggregatecertifications, and admixture certifications.6. A copy of the current National Ready Mixed ConcreteAssociation Certificate ofConformance for Concrete ProductionFacilities for Supplier’s plants, if concrete isprovided by a readymixed concrete supplier.B. Prior to the production of concrete, the Contractor shallsubmit to the Owner for record only, 1copy of Manufacturer’sspecifications with application and installation instructions forproprietarymaterials and items including bonding agents, form releaseagents, water stops, joint systems,chemical floor hardeners, dryshake finish materials, liquid curing compounds, andprepackagedrepair materials. Also, include a statement showingproduct selections comply with VOC(Volatile Organic Compounds) andenvironmental regulations of the locality.C. Prior to the production of concrete, the contractor shallsubmit to the Owner a completedescription of proposed curingmethods.D. A delivery ticket for each batch, conforming to Section 16 ofASTM C94 shall be given to theOwner’s Testing Agent at the point ofdelivery.E. The Independent Testing Agent shall submit slump test andcompression test results to theOwner on a weekly basis. Breaks of3.44 MPa (500 psi) below the specified design strength at28 daysshall be submitted on the same day. Reports shall contain theproject identificationname and number, date of concrete placement, name of contractor,name of concrete supplierand truck number, name of concrete testingservice, concrete type and class, location ofconcrete in structure,design compressive strength at 28 days, compressive break strength,andtype of break.F. Prior to placing reinforcing steel, the contractor shallsubmit the following for review by theOwner:1. Shop drawings with bar lists for fabrication of reinforcingsteel.2. Field placing drawings.3. Certified mill test reports for each bar size for each heatof reinforcing steel delivered.1.5 DeliveryA. Concrete1. Plant and Truck Mixer CertificationEvidence (including checklist) of certification of the plantequipment used for weighing ofmaterials for batching and truckmixers used for mixing and delivery of concrete shall meettherequirements of NRMCA, and ASTM C94.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto9/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 8 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL2. Delivery TicketsA delivery ticket shall be furnished in triplicate by the batchplant with each batch deliveredto the construction site settingforth the following information:a. Serial number of ticket.b. Data, time of loading, time of arrival, time ofunloading.c. Truck number and batch number.d. Specific job designation (name of Contractor, location ofpour).e. Volume of concrete (cubic yards).f. Class of concrete, as specified herein.g. Time and amount of water added.h. Type and brand of cement.i. Weight of cement.j. Weights and maximum size of coarse and fine aggregates,respectively.k. Amount of water added at site, if any.l. Type and amount of admixtures.m. Signature of Contractors Representative.3. Water reducing, accelerating, and air entraining admixturesare to be added at the batchplant, while accelerators and retardersmay be added at the batch plant or jobsite. Refer toACI 304R, Section 4.5, for requirements for charging ofingredients into the mixer.4. Add high range water reducingadmixtures to the concrete at the project site, afterverification of the initial slump.B. Reinforcing Steel1. Reinforcing steel shall be prepared for shipment in such amanner that quality andcleanliness shall be maintained duringshipment. Materials shall be adequately protectedagainst damageduring shipment.2. Shipments shall be by structure to the maximum extentpossible.3. Store reinforcement above ground and protect from dirt, oil,and grease.2. PRODUCTS2.1 GeneralA. Any product not listed under the following Materials sectionmay be submitted to the Owner forreview and approval. A productthat is not listed is not to be used without written approval oftheOwner.B. Products shall meet applicable local VOC (Volatile OrganicCompounds) regulations.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto10/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 9 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL2.2 MaterialsA. Concrete Materials1. Cement: ASTM C150, Type II, or as shownand indicated on drawings; use only 1 brandfor all cement.2. Fly ash: ASTM C618, Class F3. Fine and coarse aggregates: ASTM C33 for normal weightconcrete; ASTM C330 forlightweight concrete.4. Water: Mixing water for concrete shall meet the requirementsof ASTM C94.B. Admixtures1. Air entrainment: ASTM C260, liquid air-entraining admixture,equivalent to Micro Air by theMasterbuilders Co., or Air Mix by theEuclid Chemical Co., or approved equal.2. Water reducing: ASTM C494, Type A, Equivalent to Pozzalith200N by the MasterbuildersCo., or Eucon WR-75 or Eucon WR-91 by theEuclid Chemical Co., or approved equal.3. Water reducing, retarding: ASTM C494, Type D, equivalent toPozzalith 122R by theMasterbuilders Co., or Retarder 75 by theEuclid Chemical Co., or approved equal.4. High range water reducer: ASTM C494, Type F or G,(superplasticizer) equivalent toRheobuild 1000 by theMasterbuilders Co., or Eucon 37 by the Euclid Chemical Co.,orapproved equal.5. Noncorrosive, nonchloride accelerator, if so specified: Theadmixture shall conform toASTM C494, Type C or E, and not containmore chloride ions than are present inmunicipal drinking water. Theadmixture manufacturer must have long term noncorrosivetest data ofat least a year’s duration, from an independent testing laboratory,using anacceptable accelerated corrosion test method such as that usingelectrical potentialmeasures, equivalent to Pozzutec 20 byMasterbuilders, or Accelguard 80 by the EuclidChemical Co., orapproved equal.6. Admixtures containing calcium chloride, thiocyanates, or anyadmixture shall not contributemore than 5 ppm (0.005 percent).7. Admixtures from only 1 supplier are to be used.C. Concrete Accessories1. Bonding compounds: Rewettable; the compound shall be apolyvinyl acetate type such asEuco Weld by the Euclid ChemicalCompany on areas not exposed to moisture. ObtainOwner’s approvalprior to use.2. Epoxy adhesive: The compound shall be a 2-component, 100percent solids, 100 percentreactive compound suitable for use ondry or damp surfaces, Euco Epoxy Number 452MVor Number 620 by theEuclid Chemical Company or Sikadure Hi-Mod by the SikaChemicalCompany.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto11/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 10 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL3. Repair topping (Thickness of 1.6mm to 13mm (1/16″ to 1/2″)):Latex and microsilicamodified cementitious mortar designed for useas a floor or deck topping. Thin-TopSupreme by the Euclid ChemicalCompany, or approved equal.Repair topping (thickness of 13mm to 50mm (1/2″ to 2″)): Latexand microsilica modifiedcementitious mortar designed for use as afloor or deck topping. Concrete-Top Supremeby the Euclid ChemicalCompany, or approved equal.4. Underlayment Compound: Free-flowing, self-leveling, pumpablecementious basecompound, «Flow-Top» by Euclid Chemical Company, orApproved Equal.5. Vapor barrier: 0.15mm (6 mil) thick clear polyethylene filmor fabric reinforced plastic film,type recommended for below gradeapplications.6. Synthetic fibers: Monofilament or Fibrillated polypropylenefibers for secondary reinforcingof concrete members. Product shallbe Fiberstrand by the Euclid Chemical Company orFibermesh, by Fibermesh, Inc. Product shall have a UL rating.7.Patching mortar shall be a free-flowing polymer-modifiedcementitious coating equivalentto Euco Thin Coat (for horizontal repairs) or Verticoat (forvertical or overhead repairs) bythe Euclid Chemical Company.8. Liquid Densifier: Siliconate compound which reacts with theconcrete constituents toharden the surface, such as Diamond Hard bythe Euclid Chemical Company.9. Anti-Corrosion Epoxy / Cementitious Adhesive: Water-basedepoxy resin for adhesion andcorrosion protection of reinforcingmembers equivalent to Corr-Bond by the EuclidChemical Company.10. Concrete floor hardener shall be master plate 200 (coloredgray) metallic hardener byMasterbuilders (or approved equal), orcolorcron (colored gray) floor hardener byMasterbuilders (orapproved equal). Refer to design drawing for location and extentoffloor surface treatment,D. Curing Compounds and Accessories1. No curing agents, sealers, or release agents, other thanapproved water base, shall beused where protective coating is usedon the concrete.2. Liquid membrane curing compounds conforming to ASTM C309,Type I, ID, Class A and Bshall be water clear, styrene acrylatetype, minimum solids content 30 percent; maximummoisture loss asdetermined by independent testing laboratory tests shall notexceed0.039grams per square centimeter when applied at a coveragerate of 7.36 square metersper litre (300 square feet per gallon).The curing and sealing compound shall be certifiedto comply withthis specification and Federal Specification TT-C800A, Type I.Applicationrate shall not exceed that as stated by the manufacturerwhich shall meet the abovemoisture retention requirements. Products shall be equal toSuper Diamond Clear VOX orSuper Aqua-Cure VOX by the EuclidChemical Co., Master Kure 300W by theMasterbuilders Co., Dress andSeal 30 or Dress and Seal 30 WB by L & M ConstructionChemicals,Inc., or Owner approved equal. These products also seal anddustproof.3. Liquid chemical curing compounds conforming to ASTM C309,Type I, ID, Class A and B,shall be Master Kure or Master Kure 100Wby Masterbuilders, Inc., Kurez DR by the EuclidChemical Co., L& M Cure R by L & M Construction Chemicals, Inc., or Ownerapprovedequal and have a minimum solids content of 14 percent.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto12/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 11 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL4. In areas that require VOC (Volatile Organic Compounds)compliance for curingcompounds, the contractor shall select aproduct and submit for the Owner’s approval;especially in enclosed areas of existing operating plants.5. Polyethylene film: ASTM C171, 0.10 mm (4 mil) thick, clear,white opaque color, or black.6. Absorptive mats: ASTM C171, cotton fabric orburlap-polyethylene, minimum 8 ounce persquare yard, bonded toprevent separation during handling and placing.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto13/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 12 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALE. Products for Joints in Concrete1. Joint PrimerA 2-component penetrating liquid urethane based primer, for usewith urethane and epoxysealants such as Eucolastic Primer by EuclidChemical Co. or U-Seal Joint Sealant 3203Primer by Burke.2. Backup MaterialASTM D1056, round closed cell foam rod; oversized 30 to 50percent larger than jointwidth.3. Waterstopa. Waterstops shall be dumbbell or centerbulb type and shall bemade from extrudedPVC (polyvinyl chloride) with a minimum width of 150mm (6inches), unless notedotherwise. Corners and intersections shall beprewelded.b. Tensile strength shall be 12.41 MPa (1800 psi) minimum, asdetermined by ASTMD412 Die C method.c. Elongation shall be 350% minimum, as determined by ASTM D412Die C method.d. Tear resistance shall be 49.62 kN/m (3400 lb/ft) minimum asdetermined by ASTMD412.4. Joint Fillera. ASTM D994, bituminous impregnated fiberboard, 12mm (1/2 of aninch) and 25mm(1 inch) thick.b. ASTM D1751; asphalt impregnated cork, with asphalt saturatedglass-fiber felt liners;12mm (1/2 of an inch) thick.c. Premolded joint filler shall be Elastite Asphalt ExpansionJoint Filler or equal.5. Joint Sealanta. Joint sealants shall conform to the provisions of ACI504R.b. Expansion and isolation joints: Self-Leveling, 2-componentpolyurethane sealantsuch as U-Seal Joint Sealant 3202 Hand-Mix,Non-Sag by Burke.c. Control and construction joints: Corrosion resistant,2-component resin hardener forjoints cut with Soff-Cut saws such asMM 80 by Metzger McGuire Co., or Euco 700by the Euclid ChemicalCompany.F. Reinforcing Steel1. Fabricationa. Reinforcing bars: ASTM A615, deformed billet-steel bars,plain finish. Minimumyield strength to be 414 MPa (60,000 psi).b. Reinforcing bar mat: ASTM A184, deformed billet-steel bars,plain finish. Minimumyield strength to be 414 MPa (60,000 psi).
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto14/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 13 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALc. Spiral reinforcing: ASTM A82, cold-drawn plain steel wire,plain finish; for spiralreinforcing in columns, cast-in-placepiles, drilled piers, and caissons. Minimum yieldstrength to be 414 MPa (60,000 psi).d. Welded wire fabric: ASTM A185, cold-drawn plain steel; ASTMA497, cold-workeddeformed steel; in flat sheets, plain finish.Minimum yield strength to be 414 MPa(60,000 psi).e. Coatings: ASTM A767 for galvanized coating or ASTM A775 forepoxy coating.f. Material shall be new and in accordance with the ASTMspecification or otherrecognized standards specified. Materials notmanufactured in the United Statesshall be submitted for approval.The owner reserves the right to reject the use ofsuchmaterials.g. Bar bends and fabrication tolerances shall be in accordancewith ACI 315.h. Reinforcing steel shall be bent cold. Rebending of hooksshall not be permitted.Bars may be straightened provided the bendis more than or equal to 2 times therecommended minimum diameter ofbends.i. Bar supports shall be according to Section 3 of ACI 301.j. Tie wire shall be black annealed wire, 1.57mm (16 gage)minimum.2. Placing Drawings and Bending Schedulesa. Placing drawings and bending schedules showing the number,grade, size, length,mark, location, and bending diagrams forreinforcing steel shall be prepared inaccordance with ACI 315.b. Lap splices shall be as indicated on the design drawings.c. Each structure or foundation shall have a different identitynumber. Drawings shallindicate the related PO number and drawingnumber.3. Identification and Tagginga. Tag reinforcing in accordance with this specification; useembossed metal tags.b. Tag each bundle of bars, straight or bent, showing drawingnumber, structure, marknumber, bar quantity, and size.c. Tag stock length straight bars showing number of bars, size,and length.G. Products for Concrete FormworkDesign and installation of formwork, tolerances, preparation ofform surfaces, removal of forms,and reshoring is to be in strictaccordance with Section 2 and Section 5 of ACI 301.H. Embedded Steel and other Embedded ItemsAll anchor bolts and embedded steel shall conform to ASTM A36except as noted on thedrawings.2.3 Design CriteriaA. Concrete Strength
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto15/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 14 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL1. Unless shown otherwise on drawings, minimum 28-daycompressive strength f ‘(c) shall beas follows:a. Foundations: f ‘(c) = 28 MPa (4000 psi)b. Slab-on-grade (paving): f ‘(c) = 28 MPa (4000 psi)c. Structures; columns, beams, slabs: f ‘(c) = 28 MPa (4000psi)d. Manholes, drain boxes, ditch lining, end walls, curbs: f ‘(c)= 20 MPa (2900 psi)e. Underground electrical duct envelopes: f ‘(c) = 15 MPa (2175psi)f. Lean mix concrete: f ‘(c) = 10 MPa (1450 psi)g. Fireproofing: f ‘(c) = 20 MPa (2900 psi)2. If high early strength concrete is specified, compressivestrength shall be 7-day strength.B. Slump1. Unless shown otherwise on drawings, concrete slumpshall be as follows:a. Footings, piers, and walls: 50mm to 100mm (2 inches to 4inches).b. Beams and columns: 25mm to 100mm (1 inch to 4 inches).c. Slabs: 50mm to 100mm (2 inches to 4 inches).d. Fireproofing and underground duct envelope: 100mm to 150mm (4inches to 6inches).e. Pours over 750mm (2.5 feet) thick: 25mm to 65mm (1 inch to2-1/2 inches).f. Lean mix concrete: 100mm to 150mm (4 inches to 6 inches).2. Concrete containing high range water reducer:a. When highrange water reducer is added to maintain slump with lower water/cement ratio, slump shall be as specified in Section 2.3B.1 ofthis specification, afteraddition of the reducer.b. When high range water reducer is added to increase slumpwithout changing water /cement ratio, slump before addition ofreducer shall be as specified in Section 2.3B.1of thisspecification, and shall not exceed 200mm (8 inches) after additionof reducer.C. Water-Cement RatioMaximum 0.40 for water retaining (hydraulic) structures andconcrete subject to deicers,brackish water, or salt spray; 0.45 forall other structures.D. FormworkDesign and construction shall comply with ACI 301 and thebuilding code of the local jurisdiction.2.4 Concrete MixesA. Proportioning1. Proportion normal weight concrete mixes in accordance withSection 4 of ACI 301, massconcrete mixes in accordance withAppendix 5 of ACI 211.1, and lightweight concrete
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto16/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 15 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALmixes in accordance with ACI 211.2 on the basis of eitherprevious field experience or trialmixes; do not proportion concretemixes based on empirical data. Refer to ACI 301 forflow chart on proportioning normal weight concrete mixes. Mixingand transportation ofconcrete shall be in accordance with Chapter 4of ACI 304R.2. Include proposed chemical admixtures in mix design in sameproportions and batchingsequence as shall be used in productionconcrete.3. The proposed mix designs shall be accompanied by completestandard deviation analysisor trial mix test data.4. Determine standard deviation and required average compressivestrength in accordancewith the requirements of ACI 301.5. The maximum aggregate size shall be 20mm (3/4 inches) forelectrical ducts, slabs andwalls less than 200mm (8 inches) thick,elevated slabs, lightweight concrete, precastconcrete sleepers andwater retaining structures. For fireproofing, the maximumaggregatesize shall be 10mm (3/8 inches). For all other items, themaximum aggregate size shall be25mm (1 inch). Refer to ACI 301 foradditional requirements.6. Give particular attention to aggregate gradation for pumpableconcrete mixes.B. Concrete shall be air entrained according to Table 4.2.2.4 ofACI 301. Interior floor slabspreferably shall have no airentrainment, with no more than 3 percent.C. Fly ash may be used as a cementitious material, with the flyash replacing a maximum of20 percent of the cement (by weight). Thefly ash shall be used in calculating the water-cementratio andshall come from the same source.3. EXECUTION3.1 PreparationA. Anchor Bolts and Embedments1. Steel, ironwork, pipe sleeves, inserts, wood blocking, nailerstrips, isolation joint material,construction joint dowels, andother fixtures as shown, specified, or required to be builtintoconcrete shall be placed accurately and secured againstdisplacement during concreting.Sufficient time between erection offorms and placing concrete shall be given to the varioustrades topermit proper installation of their work. The installation ofanchors, inserts, andsleeves for electrical, mechanical, plumbing,heating, and ventilation work shall be subjectto the inspection andapproval of the supervisor of the particular trade or tradesinvolvedbefore concrete is placed.2. The installation of and tolerances for anchor bolts andembedded items shall comply withparagraph 7.5 of the AISC Code ofStandard Practice.3. Protect bolt threads against damage and concrete; cap or plugsleeves to keep out water,concrete, and debris.4. Tack welding of anchor bolts, reinforcing steel, andembedments is not permitted unlessnoted on the drawings.B. Placing ConcretePreparation before placement and conveying of concrete shall bein accordance with ACI 301.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto17/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 16 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL3.2 InstallationA. Concrete ProductionProduction of concrete shall comply with ACI 301. Water may beadded to the mix at the pointof delivery in accordance with Section11.7 of ASTM C94 when permitted by the Owner’s testingagent but inno case shall the total amount of water added at the jobsite andbatch plant exceedthe quantity specified for the design mix.B. Placing1. Placement of concrete shall be in accordance with ACI 301.The temperature of plasticconcrete, as placed, shall not exceed32oC (90 degrees F). During cold weather, asplaced, temperatureshall not be less than 10oC (50 degrees F). Hot and coldweatherconcreting shall be in accordance with ACI 305 and ACI306.2. Color top surface of underground duct envelopes; sprinklecolored iron oxide powder overfresh concrete at rate of 0.5kg/m2(0.1 of a pound per square foot).a. Red for underground electrical ducts.b. Yellow for underground instrument air line ducts.3. Ensure that discharge of ready mixed concrete is completedwithin 1.5 hours afterbatching. The 1.5 hours may be extended ifthe concrete is of such slump after 1.5 hours(or 300 revolutions)that it can be satisfactorily placed and consolidated withouttheaddition of water.4. Maintain records of concrete placement; record date,location, quantity, air temperature,field test results, and testsamples taken; maintain concrete delivery tickets with recordforready mixed concrete.5. Redosage: Redosage with the specified high range waterreducing admixture(superplasticizer) may be done with the priorapproval of the Owner regarding dosage andtime periods.6. Obtain replacement inspection and authorization from theOwner before placing concrete.7. Concrete conveying by pumping shall meet the requirements ofACI 304R, Chapter 9.Concrete conveying by belt conveyor shall meetrequirements of ACI 304R, Chapter 10.8. After concrete placement and form removal, clean exposedreinforcing steel andembedded items of concrete splatter, dirt, andother foreign matter.9. Concrete that has achieved initial set or has beencontaminated by foreign matter shall notbe deposited in thestructure. Retempered concrete shall not be used.10. Concrete shall be limited to a maximum 1.5 meter (5 feet)free fall and horizontal flow shallnot exceed 1.5 meter (5 feet)within the forms.11. Concrete shall be placed in layers of 460 millimeters (18inches). Vibrator heads shallextend into the previously placedlayer.C. Slabs on Grade1. Construct slabs in accordance with ACI 301, ACI 302 and thedrawings.2. Place concrete in alternating strips.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto18/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 17 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL3. When separate floor toppings are called for, place the floortoppings to required lines andgrade after the base concrete hascured. Screed toppings level or sloped on the drawings.4. Floor slab tolerance shall conform to Chapter 8, Section 8.15of ACI 302.1R (unlessotherwise noted on the design drawings).a. Troweled surfaces shall achieve no less than the followingComposite F-numbers forflatness and levelness:(1) F(f) -20(2) F(l) – 15 and for elevated slabsb. Local F-numbers shall be no less than the following:(1) F(f) – 15(2) F(l) – 105. If a vapor barrier is called for on the drawings, and ifsharp backfill may puncture thebarrier, place a 100mm (4 inches)compactable fill layer as a cushion. Lap vapor barrier150mm (6inches) at joints and seal with duct tape. Carefully fit vaporbarrier aroundservice openings.D. Slab Finishes1. Concrete slab surfaces shall be finished in accordance withACI 302.1R.2. Finish interior concrete floor slabs in accordance with ACI302.1R for Class 5 (industrial)floors unless otherwise shown on thedrawings.3. Finish equipment bases with a floated finish. Finish exteriorslabs, stairs, steps, rampsand walks with a broom finish. Finishinterior floor slabs with a trowel finish. Tolerancefor floor slabsshall be in accordance with ACI 117.4. If no finish is specified, refer to ACI 301.5. For sealing and dust proofing requirements, see section3.2.J.5 of this specification.6. If specified of Drawings, a monalithic surface treatmentincorporating the application of dryshake hardeners and colorantsshall be applied per manufactures specifications.E. Finishing Formed SurfacesFormed concrete surfaces shall be finished in accordance withACI 301, unless otherwise notedon the design drawings.F. Formwork1. The design, installation, and removal of formwork shall be inaccordance with ACI 347except as modified herein. Wall and soilsupported member forms may be removed after48 hours provided theconcrete is sufficiently hard not to be damaged by form removal,andprovided curing operations start immediately. Self-supportingmember forms may beremoved after 7 days provided the concretestrength is 80 percent of the 28-day strength.No superimposed loadshall be applied before the 28-day strength has been verifiedbyfield cured cylinders. Formwork tolerances shall meet ACI 301 andACI 117.2. Unless otherwise shown on the concrete drawings, exposededges shall have a 25mm (1inch) chamfer. Unexposed corners may beeither square or chamfered.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto19/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 18 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL3. Obtain Owners approval before framing openings in structuralmembers if openings arenot indicated on the drawings.4. Do not apply form release agent wherever concrete surfacesshall receive special finishesor wherever applied coverings areaffected by agent; soak inside surfaces of untreatedforms withclean water; keep surfaces coated before placing concrete.5. Coordinate work of other specifications in forming andplacing openings, slots, reglets,recesses, chases, sleeves, bolts,anchors, and other inserts.G. Reinforcement1. The grade, type, and details of reinforcing steel shall be inaccordance with the designdrawings. Placement of reinforcementshall be in accordance with of ACI 301 unlessotherwise approved bythe Owner.2. Place, support, and fasten reinforcing before placingconcrete; do not insert dowels intofresh concrete; do not float welded wire fabric down into freshconcrete. Support slabreinforcement at the required depth andsecure prior to placing concrete; do not pullwelded wire fabric upinto fresh concrete as it is placed.3. Secure at least 25 percent of bar intersections (includingwall dowels) with wire in 2-waymats.4. Splice reinforcing bars only as shown on the design drawings.Necessary splices notshown on the drawings shall be lappedsufficiently, as approved by the Owner, to developthe strength ofthe bars by bond for bars through 35mm (size Number 11).Mechanicalsplices shall be made only as shown and noted on thedrawings. Welded splices are notallowed.5. Minimum concrete cover shall be according to ACI 301. Areassubject to chemicalexposure, as noted on the design drawings, shallhave a minimum cover of 50mm (2inches), unless otherwise noted.H. Joints and Embedded Items1. Joints and embedments shall be in accordance with ACI 301unless otherwise approvedby the Owner.2. All sleeves, inserts, anchor bolts, waterstop and otherembedded items shall be installed inaccordance with the designdrawings and support against displacement.3. Anchor bolts shall be located within 3mm (1/8 of an inch) ofdesign position and shall beplumb within 4mm in meter (1/8 of aninch in 3 feet).4. Embedded plates shall be placed within plus or minus 6mm (1/4of an inch) horizontally orvertically.5. Construction joints shall be located as shown on the concretedrawings. Any variationfrom location shown shall be approved by theOwner. Should the concrete operationrequire the placement of anintermediate construction joint, the concrete shall be struckoffsquare with the structure, water stops added if the normal jointhas a waterstop, thelocation completely recorded and reported tothe Owner in writing. Adjacent pour shall notbe made until adisposition has been received from the Owner.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto20/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 19 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL6. Construction, isolation, and control joints in slabs on gradeare to be built in accordancewith and located according to thedesign drawings. Control joints in slab toppings are tobe located directly above and in line with the control joints inthe underlying concrete slab.Soft-Cut saw to a depth of 32mm (1.25 inches) shall be usedimmediately after finalfinishing. Conventional saw cut joints areto begin as soon as the concrete is hard enoughto prevent ravelingof the surface and dislodging of the aggregate, but no later than12hours after concrete placement. Prime and seal joints accordingto Sealant Manufacturer’sinstructions. Control joints are to be cutusing a Soff-Cut Saw and in strict accordance withthe sawmanufacturer’s written recommendations. Determine the sawingsequence basedupon slab pour time and size.7. The surface of construction joints shall be thoroughlycleaned and defective orcontaminated concrete, surface film, andlaitance removed. Prewet the remainingconcrete followed by a brushapplication of a neat cement paste. Obtain Owner’s approvalbeforeusing bonding agents. Coating of vertical construction joints isnot required.8. Locate construction joints in girders, beams, and framedslabs according to the designdrawings. Obtain approval from theOwner before placing any construction joints inlocations other thanthat shown on the design drawings.9. Locate construction joints in walls no more than 30m (100linear feet) apart. Installweakened plane control joints at 7m(25-foot) maximum spacing between constructionjoints.10. Provide and install waterstops in joints as detailed ondrawings. Join waterstop sectionsaccording to the manufacturer’srecommendations. Anchor securely to prevent movementduring concreteplacement. Provide waterstops at all joints subject to eithergroundwateror process fluids. Only butt welds are permitted in thefield. Reinforcement shall not bedisplaced when installingwaterstops.11. Continue reinforcing through construction joints.12.Isolation joints in walls are to be provided as detailed on thedrawings. Interrupt reinforcingat isolation joints; provide and install dowels as detailed onthe drawings. Install isolationjoints as located on the drawingsand where paving adjoins vertical surfaces such as walls,columns,catch basins, manholes, and equipment foundations. Gap width shallbe 19mm(3/4 of an inch) unless otherwise detailed.13. Control or construction joints not specified on the designdrawings shall be located at thecolumn centerlines and atintermediate intervals so that each panel does not exceed 50squaremeter (600 square feet) in area. Concrete shall be placed inalternate paving lanesutilizing construction and control joints asspecified.I. Repair of Surface Defects1. Unless otherwise specified or permitted by the Owner, tieholes, honeycombs, and otherconcrete surface defects shall berepaired in accordance with ACI 301, as soon aspracticable afterform removal at such times and in such manner as shall notdelay,interfere with, or impair the proper curing of the freshconcrete. The Owner shall benotified before proceeding with repairif the defect is greater than 75mm (3 inches) deepand larger than130000 square millimeters (200 square inches) in surface area, orif thedepth is over 1/3 the thickness of the member and greaterthan 150mm (6 inches) in anyother direction.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto21/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 20 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL2. Prepackaged grouts and patching compounds may be used afterOwners approval isobtained. As an alternate, a patching mortarsimilar to the concrete mix minus the coarseaggregate can be used. Do not use more than 1 part cement to2-1/2 parts sand by damp,loose volume. Match the color of thesurrounding area.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto22/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 21 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL3. Remediation of Out-Of-Tolerance Slabsa. Grind down high points.b. Raise low points by using thespecified underlayment compound or repair topping ifthe areas are exposed.c. Critical slab areas that must be replaced if out-of-toleranceare identified ondrawings.(1) Demolish and replace out-of-tolerance areas that areidentified on drawings.(2) Submit demolition and replacement plan to the Owner forreview andconcurrence before demolition.(3) Replacement slab shall meet tolerance requirements as shownon drawings forcritical slab areas.J. Curing and Protection1. Freshly deposited concrete shall be protected from prematuredrying and excessively hotor cold temperatures and shall bemaintained with minimal moisture loss at a relativelyconstanttemperature for the period of time necessary for the hydration ofthe cement andproper hardening of the concrete. Curing shallconform to the requirements in ACI 301.2. Follow the manufacturer’s recommendations for curing andsealing when hardeners,metallic, or mineral aggregate toppings arespecified on the design drawings.3. Concrete Surfaces in Contact with FormsThe time during which concrete surfaces are in contact with woodor metal forms may beconsidered as curing time. Wood forms shall bemaintained in a moist condition untilremoval. After form removal,the concrete shall be cured until the end of the curing periodbyone of the methods of concrete surfaces not in contact with forms.Moist wood forms incontact with concrete shall not be considered ascuring for hydraulic structures. Curingtime shall commence as soonas the wall forms have been loosened and sprinkling hasbegun. Wallforms shall be loosened between 24 and 48 hours after concreteplacementand sprinkling begins. Wood forms shall be kept moistuntil the forms are loosened andthe curing procedure begins.4. Curing Hydraulic StructuresHydraulic structures shall only be cured by a wet cureprocedure. This includes the use ofponding or sprinkling or amoisture retaining fabric. Curing shall occur for a minimum of14days. Wall forms are to be loosened and water continuallysprinkled between the wall andforms. A structure designated as ahydraulic structure shall be so noted on the designdrawings.5. Sealing and Dustproofinga. Exposed concrete floor surfaces shall be sealed anddustproofed. Where theconcrete is cured by using a liquid membranecuring compound, this sealing anddustproofing can be a part of thecuring process provided a suitable compound isused. Where someother curing method is used, the concrete surface shall becoatedwith a liquid sealing and dustproofing compound. Apply compoundsinaccordance with the manufacturer’s instructions.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto23/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 22 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALb. Liquid membrane curing compounds that also seal and dustproofmay be used onexposed concrete floors. Do not use membrane formingcompounds on surfaces toreceive bonded treatments, tiles, adhered finishes, paint, epoxytoppings, tiles, andadditional concrete. Unless otherwise noted,hydraulic structures are not to receive asealing anddustproofing.c. Wet cure concrete floors that are to receive bondedtreatments, tiles, adheredfinishes, paint, epoxy toppings, tiles,and additional concrete. Wet cure for aminimum of 7 days. Do notuse ponding water, sprayed water, or wet sand onexposed concretesurfaces.6. Concrete Surfaces Not in Contact with FormsConcrete surfaces not in contact with forms can utilize any ofthe methods indicated in ACI301 for preservation of moisture,except do not use ponding, sprayed water, or wet sandon exposedconcrete slabs.7. For massive concrete as defined in ACI 207, cure and protectin accordance with ACI 301.3.3 TestingA. To ensure that ingredient materials meet the specificationrequirements, the followingpreconstruction qualification testsshall be performed on the materials proposed for use. Thecontractorshall be responsible for compiling this documentation and forhaving these testsperformed by a testing laboratory acceptable tothe Owner. Tests on cement and admixturesmay be performed by thesupplier of the particular material.1. CementPhysical and chemical properties from tests referenced in ASTMC150 or C595 asappropriate2. AggregateRequired Test Sand StoneGradation ASTM C136 ASTM C136Fineness modulus ASTM C136 –Material finer than Number 200 sieve ASTM C117 ASTM C117Organic impurities ASTM C40 –Lightweight pieces ASTM C123 ASTM C123Friable particles ASTM C142 ASTM C142Specific gravity and absorption ASTM C128 ASTM C127Los Angeles abrasion — ASTM C131Potential reactivity (chemical method) ASTM C289 ASTMC289Potential reactivity (mortar-bar method) ASTM C227 ASTMC227Soundness ASTM C88 ASTM C88Petrographic examination ASTM C295 ASTM C295Unit Weight and Voids ASTM C29 ASTM C29
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto24/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 23 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALMoisture content of both fine and course aggregates should bedetermined on a regularbasis and batch quantities for water andaggregate adjusted to maintain maximum water /cement ratio.3. Mixing Water and IceNonpotable water, if used, shall be tested to determine if itproduces mortar cubes having7 and 28-day strengths equal to atleast 90 percent of the strength of similar specimensmade withdistilled water. The strength comparison shall be made on mortars,identicalexcept for the mixing water, prepared and tested inaccordance with ASTM C109. Thechloride content shall be determinedin accordance with ASTM D512. The total watersoluble chloridecontent shall not exceed 0.15 percent by weight of cementincludingchlorides in mixing water, admixtures, aggregates, andcements.4. Water Reducing, Retarding, Accelerating and Air EntrainingAdmixtureManufacturer’s certification that the admixture complieswith ASTM C494 and ASTMC1017, Standard Specification for ChemicalAdmixtures for use in Producing FlowableConcrete.5. Pozzolanic AdmixturesThe tests for physical and chemical properties referenced inASTM C618 shall beperformed.B. Concrete materials and operations shall be tested andinspected as the work progresses inaccordance with ACI 301. Failureto detect any defective work or material shall not in anywayprevent later rejection when such defect is discovered nor shallit obligate the Owner for finalacceptance.C. Testing shall include compressive tests of molded concretecylinders, tests for slump, unitweight, air content (where airentrainment is required), fresh concrete temperature, andunitweight according to ASTM C138.D. The rate of sampling shall be in accordance with ACI 301.Take additional samples whenobservations on tests indicatenonconformance with the specifications. Cure 5 test specimensfromeach placement of each class of concrete for every 75 cubic meters(100 cubic yards) orfraction thereof in accordance with ASTM C31.Mold and test specimens in accordance withASTM C39 at the followingintervals: 2 cylinders at 7 days, 1 cylinder at 14 days, and2cylinders at 28 days.E. Testing of Reinforcing Steel1. Reinforcing steel shall be tested in accordance with ASTMA615.2. Reinforcing steel with rust, mill scale, or a combinationof both shall be consideredsatisfactory provided the minimum dimensions, including heightof deformations andweight of hard-wire-brushed test specimen, arenot less than ASTM A615 requirements.Such test shall be at theOwner’s discretion.3. Reinforcing steel shall be free from mud, oil, or othernonmetallic coatings that adverselyaffect bonding capacity.3.4 Field Quality Control
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto25/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 24 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALA. The Owner shall establish procedures for inspection, testing,acceptance criteria, anddocumentation. These procedures shalldefine the documentation that shall be employed toensure that the certifications, examinations, tests, andapprovals required by the contractspecifications are accomplished.Inspection procedure shall provide for documentedpreplacementinspections. Testing and acceptance of materials and concrete workshall complywith ACI 301 unless otherwise modified herein.B. The Contractor shall be responsible for all quality controland testing specified in Section 3.3,Testing, except as notedbelow. Contractor shall retain a testing agency that meetstherequirements of ASTM E329. The testing agency shall be subjectto approval of theConstruction Manager.C. The Owner will retain a testing agency to perform QualityAssurance functions.D. The Contractors testing agency shall prepare, store andprotect at the placement site, and thentransport to theConstruction Managers on site testing agency, all concrete testcylinders.E. Curing and comprehensive strength tests of concrete cylinderswill be performed by the Ownerstesting agency. The Contractor maywitness the test breaks as they are made.F. Should the contractor feel additional tests are needed forearly form or support removal, it will beContractors responsibilityto take additional cylinders as necessary, at no cost to theOwner.G. Acceptance of concrete shall be based upon results for slump,air content, temperature, andstrength taken at the site. Testingfrequency shall be as specified in ACI 301 unless waived bytheOwner.H. The finished structure shall be evaluated for acceptabilityin accordance with of ACI 301. Thecontractor shall pay costsincurred for additional testing, analyses, and any correctiveworkrequired when the structure is found to be deficient instrength or other specified characteristics.I. During construction, the Contractors testing agency and theOwners Independent TestingAgency shall inspect, sample, and testconcrete materials and production of concrete asrequired by theOwner. Compressive test results for 7 and 28 day breaks for eachclass ofconcrete shall be evaluated in accordance with ACI 214including as a minimum graph ofaverage strength, standarddeviation, coefficient of variation, and required averagestrength.Failure to detect any defective work or material shall notprevent in any way later rejection whensuch defect is discovered,nor shall it obligate the Owner for final acceptance. The testingandinspection agency shall meet the requirements of ASTM E329.4. ATTACHMENTSNot applicableEnd of Specification
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto26/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 25 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALEste documento ha sido revisado como se indica ms abajo. Loscambios posteriores a la revisin 0 sonidentificados con barrasverticales al lado derecho de la pgina, con los agregadossubrayados. Por favorreemplazar todas las paginas de este documento y destruya lascopias precedentes. El idioma ingls predominaen este documento.Rev.No.Origen(nombre/iniciales)FechaRev.Descripcin de la RevisinC Tim Chan 18Ene05 Emitido para Aprobacin.0 Tim Chan 10May05Emitido para ConstrucinNueva Edicin Especificacin TotalmenteRe-Editada.APROBACIONES ORIGINAL FIRMADO PORFLUOR FECHA CLIENTE FECHAGerente de Proyecto:Gerente de Ingeniera: Brad Matthews10May05Ingeniero de Proyecto delrea:Manuel Echevarria 10May05Ingeniero Jefe de laDisciplina:Tim Chan 10May05Aprobacin del Proceso :
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto27/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 26 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL1. GENERALIDADES1.1 ResumenEsta especificacin define los requerimientos para la colocacindel concreto en obra.A. Alcances de la Especificacin1. Trabajos de construccin con concreto simple y con concretoreforzado.2. Muestreo, pruebas e inspeccin del concreto y construccin enconcreto.3. Ubicacin y fijacin de pernos de anclaje y elementos embebidospara componentesestructurales.4. Detalles, fabricacin y ubicacin de las varillas de acero derefuerzo, incluyendo soportesde refuerzo y accesorios.5. Diseo, suministro e instalacin de encofrados para estructurasde concreto.B. Especificaciones RelacionadasLas especificaciones siguientes definen el trabajo relacionadocon:1. C-CS-15-031 Grouts (mezcla dosificada de material cementicioy agua).2. C-CS-15-032 Fabricacin de Acero Estructural y Miscelneos.3. C-CS-15-033 Montaje de Acero Estructural y Miscelneos.Coordinar los trabajos estipulados en esta especificacin conaquellos definidos en lasespecificaciones mencionadas lneas arriba.1.2 ReferenciasLas publicaciones mencionadas lneas abajo forman parte de estaespecificacin en la extensinreferida en este documento. Cadapublicacin ser de la ltima revisin y adendas vigentes a la fechaenque se emita esta especificacin para la construccin, a menos que seindique de otra manera.Excepto, como sea modificado por losrequerimientos especificados aqu o en los detalles de losplanos, eltrabajo incluido en esta especificacin deber estar conforme lasprevisiones aplicables deestas publicaciones. Si hubiesediscrepancia entre las referencias y esta especificacin, sepriorizarla ms exigente.A. ACI (Instituto Americano de Concreto)1. ACI 270R Concreto Masivo.2. ACI 211.1 Prcticas Estndar paraseleccionar las proporciones para ConcretoNormal, Pesado y Masivo.3. ACI 211.2 Prcticas Estndar para Seleccionar las Proporcionespara ConcretoEstructural ligero.4. ACI 214 Prcticas Recomendadas para la Evaluacin de losResultados dePruebas de Resistencia del Concreto.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto28/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 27 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL5. ACI 301 Especificaciones para Concreto Estructural.6. ACI 302.1R Gua para la Construccin de Losas y Pisos deConcreto.7. ACI 304R Gua para Medicin, Mezclado, Transporte yColocacin del Concreto.8. ACI 304.2R Vaciado de Concreto por Mtodos de Bombeo.9. ACI 305R Colocacin de concreto para Climas Clidos.10. ACI 306R Colocacin de concreto para Climas Fros.11. ACI 308 Prcticas Estndar para el Curado del Concreto.12. ACI 315 Detalles y Detallado del Concreto Armado.13. ACI318/318R Requerimientos de la Norma de Construcciones enConcreto Estructural(ACI 318) y Comentario (ACI 318R).14. ACI 347R Gua para Encofrados para Concreto.15. ACI 504R Guapara Selladores de Juntas en Estructuras de Concreto.16. ACI SP-15 Especificaciones Estndar del Concreto Estructuralpara Edificaciones(ACI 301) con Referencias seleccionadas del ACI y ASTM.17. ACI SP-66 Manual de Detalles del ACI.B. AISC (Instituto Americano de Construcciones en Acero)Norma de Prctica Estndar para Edificaciones y Puentes.C. ASTM (Sociedad Americana de Ensayos y Materiales)Las Normas de la Sociedad Americana de Ensayos y Materiales estnenumeradas en laseccin 1.4 del ACI 301 y se les reconocer comoparte de estas especificaciones, tal como sihubiesen sido escritasen su totalidad en estas lneas. Igualmente, las siguientesnormasforman parte de esta especificacin en la extensin a la que sehace referencia.1. ASTM A82 Especificaciones Estndar de Acero Liso paraConcretoArmado.2. ASTM A184/A184M Especificaciones Estndar para la fabricacinde Losas deCimentacin de Concreto Armado con varillas deacerocorrugado.3. ASTM A185 Especificaciones Estndar para Fabricacin de MallasSoldadasde alambre, liso, para concreto armado.4. ASTM A497 Especificacin Estndar para Fabricacin de mallasSoldadasdealambre, corrugado, para Concreto Armado.5. ASTM A615/A615M Especificacin Estndar para palanquillas deacero corrugado yliso para concreto armado.6. ASTM A767/A767M Especificaciones Estndar de Barras de AceroRecubiertas conzinc (Galvanizadas) para Concreto Armado.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto29/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 28 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL7. ASTM A775/A775M Especificaciones Estndar para Barras de Acerode Refuerzorecubiertas con Epxicos.8. ASTM A820 Especificacin Estndar de Fibras de Acero paraConcretoReforzado con Fibras.9. ASTM C29/C29M Mtodos Estndar de Pruebas de Pesos Unitarios yVacos enAgregados.10. ASTM C31/C31M Prcticas Estndar de Elaboracin y Curado deProbetas deConcreto en campo.11. ASTM C33 Especificacin Estndar paraAgregados del Concreto.12. ASTM C39 Mtodos Estndar de Ensayos de Esfuerzos a laCompresin deProbetas Cilndricas de Concreto.13. ASTM C40 Mtodos Estndar de Ensayos de Impurezas OrgnicasenAgregados Finos para Concreto.14. ASTM C88 Mtodos Estndar de Ensayo de Dureza deAgregadosmediante el uso de Sulfato de Sodio o SulfatodeMagnesio.15. ASTM C94 Especificacin Estndar de Concreto Pre-Mezclado.16. ASTM C109/C109M Mtodos de Ensayos Estndar de Resistencia ala Compresinde Morteros de Cemento Hidrulico (EmpleandoProbetascbicas de 2-pulgadas o 50-mm).17. ASTM C117 Mtodos Estndar de Ensayo de Materiales de Finuramenor a75-Micras (Malla 200) Tamiz de Agregados Mineralesporlavado.18. ASTM C123 Mtodos Estndar de Ensayo de Partculas LigerasenAgregados.19. ASTM C127 Mtodos Estndar de Ensayos de Gravedad EspecficayAbsorcin de Agregados Gruesos.20. ASTM C128 Mtodos Estndar deEnsayos de Gravedad Especfica yAbsorcin de Agregados Finos.21. ASTM C131 Mtodos Estndar de Ensayos de Resistencia a laDegradacinde Agregados Gruesos de pequeo tamao porAbrasin e Impacto en la Mquina de Los ngeles.22. ASTM C136 Mtodos Estndar de Anlisis Granulomtrico deAgregadosfinos y Gruesos.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto30/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 29 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL23. ASTM C138 Mtodos Estndar de Ensayos de Pesos Unitarios,Fluencia, yContenido de Aire (Gravimetra) del Concreto.24. ASTM C142 Mtodos Estndar de Ensayos de Grumos de Arcilla yPartculasdisgregables en Agregados.25. ASTM C143 Mtodos Estndar de Ensayos de Asentamiento (Slump)deConcreto de Cemento Hidrulico.26. ASTM C150 Especificaciones Estndar del Cemento Prtland.27. ASTM C171 Especificaciones Estndar para Materiales en LminasparaCurado de Concreto.28. ASTM C172 Prcticas Estndar de Muestreo de Mezcla de ConcretoFresco.29. ASTM C173 Mtodos Estndar de Ensayos de Contenido de Aire enelConcreto Fresco, por Mtodos Volumtricos.30. ASTM C227 Mtodos Estndar de Ensayos del Potencial deReactividadAlcalina de las Combinaciones Cemento Agregados(MtodoBarra Mortero).31. ASTM C260 Especificaciones Estndar de AditivosIncorporadores de Airepara Concreto.32. ASTM C289 Mtodos Estndar de Ensayo del Potencial ReactividadSlico-Alcalina de los Agregados (Mtodo Qumico).33. ASTM C295 Gua Estndar de Exmenes Petrogrficos de AgregadosparaConcreto.34. ASTM C309 Especificacin Estndar para Compuestos FormadoresdeMembranas Lquidas para Curado del Concreto.35. ASTM C330 Especificacin Estndar de Agregados Ligeros paraConcretoEstructural.36. ASTM C494 Especificacin Estndar para Aditivos Qumicos paraConcreto.37. ASTM C595 Especificacin Estndar para Cementos MezcladosHidrulicos.38. ASTM C618 Especificacin Estndar de Cenizas Finas de CarbnyPuzolana Natural Cruda o Calcinada para su utilizacin comoAditivo Mineral en Concretos de Cemento Prtland.39. ASTM C882 Mtodos Estndar de Prueba por corte diagonal deresistenciade la unin de Sistemas de Resinas Epxicas usados enconcreto.40. ASTM C1017 Especificacin Estndar del Uso de Aditivos Qumicosen laProduccin de Concretos Fluidos.41. ASTM C1157/C1157MEspecificaciones de Rendimientos Estndar en CementoMezclado Hidrulico.42. ASTM D75 Prcticas Estndar de Muestreo de Agregados.43. ASTM D412 Mtodos Estndar de Ensayos a Traccin para JebeVulcanizado, Jebes Termoplsticos y ElastmerosTermoplsticos.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto31/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 30 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL44. ASTM D512 Mtodos Estndar de Pruebas de presencia de InCloruro en elagua.45. ASTM D624 Mtodos Estndar de Ensayos de resistencia a laRotura paraJebe Vulcanizado Convencional y ElastmerosTermoplsticos.46. ASTM D994 Especificacin Estndar para Rellenos Preformados deJuntasde Expansin para Concreto (tipo Bituminoso).47. ASTM D1056 Especificacin Estndar de Materiales celularesflexibles Esponja o jebe expandido.48. ASTM D1751 Especificacin Estndar de Rellenos Preformados deJuntas deExpansin para Pavimentos de Concreto yConstruccinEstructural (De tipo no extrudos y bituminosoresiliente).49. ASTM E329 Especificaciones Estndar para Agencias EncargadasdeEnsayos o Inspeccin de Materiales Usados en laConstruccin.D. NRMCA (Asociacin Nacional de Productores de Concreto PreMezclado)Lista de verificacin (Checklist) de las InstalacionesProductoras de Concreto Pre-Mezclado.E. OSHA (Administracin de Seguridad y Salud Ocupacional)1.3 Reuniones Previas a la Colocacin del ConcretoEl Proveedor de Concreto, el Gerente de Construccin, ElContratista de Concreto, el Proveedor deAditivos, el Laboratorio deEnsayos, y el Propietario, debern reunirse previo a la entrega deldiseode mezclas para la revisin de las especificaciones, discutirdetalladamente los requisitos para lapreparacin del diseo demezclas y establecer los procedimientos apropiados para laconstruccin.1.4 RemisionesA. El Contratista deber proporcionar al Propietario para larevisin y aprobacin con 14 das deanticipacin a la colocacin delconcreto o de acuerdo a los requerimientos del Proyecto, 1copia delos siguientes documentos:1. Diseo de MezclasEl Diseo de Mezclas deber proporcionarse en concordancia con laSeccin 4 del ACI301. Proporcionar para revisin el Diseo de Mezclaspara cada combinacin deingredientes del concreto, en cada clase deconcreto.2. La calificacin de los resultados de las pruebas de los lotesensayados, o el anlisiscompleto de desviacin estndar basada en laexperiencia de campo.3. Los resultados de pruebas de los ingredientes del concreto olas certificaciones,incluyendo los reportes de los ensayos delagua.4. Los resultados de los ensayos de resistencia a lacompresin.5. Proveedores, origen (canteras), propiedades, ycertificaciones de materiales. Lascertificaciones incluyen, pero nose limitan a las certificaciones del cemento, aditivosminerales,agregados fino y grueso, y certificaciones de aditivos.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto32/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 31 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURAL6. Una copia vigente de la Certificacin de Conformidad de lasinstalaciones de las plantasdel Proveedor productoras de Concreto,emitida por la Asociacin Nacional de ConcretoPre-Mezclado, en caso de que el concreto sea proporcionado porun proveedor deconcreto pre – mezclado.B. Previo a la produccin de concreto, el Contratista deberproporcionar al Propietario solamentepara su archivo, 1 copia delas Especificaciones del Fabricante con instrucciones deinstalaciny utilizacin para los materiales de marca registrada yproductos que incluyan agentesadherentes, agentes desencofrantes,water stops (sistemas de sellado), sistemas de juntas,endurecedoresqumicos para pisos, materiales dry shake finish (mezcla paraespolvorear enseco), compuestos lquidos para curado, y materialespre-empacados de reparacin. Tambin,se incluir una declaracinmostrando que la seleccin de productos cumple con las normasVOC(Componentes Voltiles Orgnicos) y las normas ambientales de lalocalidad.C. Antes de la produccin del concreto, el contratista deberproporcionar al propietario unadescripcin completa de los mtodos propuestos de curado.D. Unaboleta de entrega para cada lote, de acuerdo con la Seccin 16 delASTM C94 deber serproporcionada al Agente de Ensayos del Propietario en el lugarde la entrega.E. El Agente Independiente de Ensayos deber remitir alpropietario los resultados de los Ensayosde Asentamiento (Slump) yde compresin semanalmente. Roturas de 3.44 MPa (500 psi) pordebajode la resistencia de diseo especificado a los 28 das debern serremitidas el mismoda. Los reportes debern contener el nombre ynmero de proyecto, fecha de colocacin deconcreto, nombre delcontratista, nombre del proveedor de concreto y nmero de placadelcamin, nombre del laboratorio de ensayos del concreto, clase ytipo de concreto, ubicacin delconcreto en la estructura, diseo deresistencia a la compresin a los 28 das, resistencia encompresin ala rotura y tipo de rotura.F. Previo a la colocacin del acero de refuerzo, el contratista,deber remitir al Propietario pararevisin lo siguiente:1. Planos con la relacin de varillas de acero para lahabilitacin del acero de reforzamiento.2. Planos de ubicacin en obra.3. Reportes de los certificados de fabricacin para cada tamao devarilla, de cada coladade acero de reforzamiento entregado.1.5 EntregaA. Concreto1. Certificacin de la Planta y de los Camiones Concreteros(mixers)Constancia de certificacin de los equipos de planta (incluyendolista de verificacin)utilizados para el pesado de materiales paradosificacin y de los camiones concreterosempleados en el mezclado yentrega de concreto que deber cumplir con los requisitos delaNRMCA, y la ASTM C94.2. Boletas de EntregaLa planta de dosificacin proporcionar por triplicado una boletade entrega para cada lotetransportado a obra, consignando lasiguiente informacin:a. Nmero de serie de la boleta.
  • 7/23/2019 Especificaciones Tcnicas Acero y Concreto33/49Client Name: Sociedad Minera Cerro Verde S.A.A. Specif icat ionC-CS-15-011Project Name: Primary Sulfide Project Page 32 of46Project Number: PSP108 Rev. 0FLUORMining & MineralsSTRUCTURAL CONCRETE AND REINFORCING CONCRETO ESTRUCTURAL YREFUERZOY:\103\109 ENGDOC\109.2CONSPEC_CS\STRUCTURAL\C-CS-15-011\C-CS-15-011 STR CONCRETE ANDREINFORCING_REV.0.DOC STRUCTURALb. Fecha, hora de carga, hora de llegada, hora de descarga.c. Nmero de camin y nmero de lote.d. Designacin de trabajoespecfico (nombre del Contratista, ubicacin del vaciado).e. Volumen de concreto (en yardas cbicas).f. Clase de concreto, como sea especificada en estedocumento.g. Hora y cantidad de agua aadida.h. Marca y tipo de cemento.i. Peso del cemento.j. Peso y tamao mximo de los agregados grueso y fino,respectivamente.k. Cantidad de agua agregada in situ, si la hubiese.l. Tipo y cantidad de aditivos.m. Firma del Representante del Contratista.3. Los aditivos reductores de agua, acelerantes, e inclusores deaire se agregarn en laplanta dosificadora, mientras que losacelerantes y retardantes podrn agregarse enplanta o en
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