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Concrete98Jf7B2Part4.Specificationfortheprocedurestobeusedinsampling,testingandassessingcomplianceofconcrete本资料由微信公众号jianzhu118整理持续更新中BSI)!I!JII.~()('()],Y1~(;11A~F(1[1:1\TrJJ<)('1'WJm'rE~I'EI/IISSI<)1FW)llBSiSTANDARDS AmendmentNo.1AMD6928==.~=-!_.'...publishedandeffectivefrom29November1991toBS5328:Part4:1990STANDARDSConcretePart4.Specificationfortheprocedurestobeusedinsampling,testingandassessingcomplianceofconcreteRevisedtextAMD6928ForewordNovember1991Attheendofparagraph7insertthefollowing.'Thespecificationofdesignatedmixesisunlikelytobeappropriateforfactoryproducedprecastconcreteproducts.'AMJ)6928Clause3.7.1MethodsofcalculationandtestNovember1991AttheendofitemCc)inparagraph1delete'1990'andsubstitute'1991'.AMD6928Clause3.8.4ComplianceNovember1991Inparagraph2,lastlinedelete'1990'andsubstitute'1991'.AMD6928Clause3.13.1November1991Inline2delete'1990'andsubstitute'1991'.Inline7delete'3.16.1'andsubstitute'3.16.2'.AMD6928Clause3.14.1November1991Inline2delete'1990'andsubstitute'1991'.本资料由微信公众号jianzhu118整理持续更新中CABl4 BS5328:Part4:1990ContentsPageCommitteesresponsibleInsidefrontcoverForeword2SpecificationoIntroduction41Scope42Definitions43Samplingandtesting4Table1Characteristiccompressivestrengthcompliancerequirements8www.bzfxw.com本资料由微信公众号jianzhu118整理持续更新中 BS5328:Part4:1990ForewordThisPartofBS5328hasbeenpreparedunderthedirectionoftheCement,Gypsum,AggregatesandQuarryProductsStandardsPolicyCommittee.ThisPart,togetherwithBS5328:Parts1,2and3,isarevisionofBS5328:1981,whi<;hiswithdrawn,andformsacomprehensivestandardforthespecificationofconcretetowhichcodesofpracticeandcontractualdocumentscanrefer.Itincludesrecommendationsoriginatingfrom,andcomplementingclausesin,BS8UO:Part!.Asthisstandardinvolvesselectionbythespecifierfromanumberofoptionsand,incertaininstances,agreementonrequirementsbetweenthepurchaserandproducer,anyrequirementforcompliancewithBS5328oranyclaimofcompliancewithithastobequalifiedbyreferencetotheselectionandtoanysuchagreements.Thisstandardcoversthemethodsforspecifyingandproducingconcreteasaconstructionmaterialuptothepointofdeliveryintotheconstruction.ThestandardisnowinfourParts:Partl.GuidetospecifyingconcretePart2.MethodsforspecifyingconcretemixesPart3.SpecificationfortheprocedurestobeusedinproducingandtransportingconcretePart4.Specificationfortheprocedurestobeusedinsampling,testingandassessingcomplianceofconcretePart1providesguidancewww.bzfxw.comtothespecifierandpurchaserofconcreteontheselectionofrequirementsformaterialsandconcretemixes.Part2providesachoiceofmethodsbywhichthepurchasercanconveytheselectedrequirementstotheproducer.Part3specifiesfortheproducertheprocedurestobeusedinproducingandtransportingtheconcrete.Part4specifiestheprocedurestobeusedbythepurchaserinsampling,testingandassessingconcreteforcompliance.Thisstandardprovidesmethodsforspecifyingconcretemixedonsiteorinaprecastconcretefactoryandforthepurchaseandsupplyofready-mixedconcrete.Ittakesaccountofthedistinctanddifferentresponsibilitiesofthepurchaserandtheproducer.Thereareanumberofinstancesinwhichthepurchaserhastoselectfromthevariousoptionsgiveninthisstandardinordertospecifytheconcreterequired.Thepurchaserisresponsibleforpassingontotheproducertherequirementsofthespecifyingbody,e.g.theengineer'sorarchitect'sspecification,togetherwithanyadditionalrequirements.Throughoutthisstandardtheterms'specify'and'specification'areusedinrelationtobothsetsofrequirements.Theremaybeoccasionswhereitisadvantageousforeconomicortechnicalreasonstoproposechangestothespecification.Insuchcasestheproducerandpurchasershouldagreetheproposedamendmentsforapprovalandsanctionbythespecifyingbody.PrecautionsneedtobetakenwhenworkingwithcementandwetconcreteandattentionisdrawntotheseinBS5328:Parts3and4.Thisstandardcoversconcreteproducedbynormalmethods,butitdoesnotapplytoprecastconcreteproductswhereBritishStandardspecificationscontainthespecificationoftheconcrete.Manyoftherequirementsofthestandard,e.g.theuseofmaterialsandthecontrolofproduction,applyequallytoprecastconcreteandtoinsituconcrete.However,someofitsrequirementsconcerningtheresponsibilitiesofthepurchaserandproducermaynotapplyinthecaseofprecastconcrete.本资料由微信公众号jianzhu118整理持续更新中 BS5328:Part4:1990Itisnecessaryforthepurchasertotakeintoaccounttherequirementsofspecializedcodesofpracticeandanyinfluencesoftheconstructionprocess.Provisionsaremadeinthisstandardfortheinclusionofanyspecialrequirements.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.www.bzfxw.com本资料由微信公众号jianzhu118整理持续更新中 BS5328.:Part4:1990SpecificationoIntroductionWhensamplingandtestingforcompliancearerequiredtobequalityassured,evidenceofThisPartofBS5328describesmethodsofsamplingcertificationandanychangeincertificationshallandtestingofconcrete,whichhavebeenspecifiedbeprovidedonrequest.inaccordancewithBS5328:Part2,anddefines,forbothpurchaserandproducer,thecomplianceTheproducershallbeaffordedallreasonablelimitsforthevariousteststhatmaybespecified.opportunityandfacilitytoinspectthesamplingandtestingregimeemployedbythepurchaser.Asanalternativetoassessingcompliancewithcementcontentorwater/cementratiorequirements3.2Pointandtimeofsamplingbyanalysis,orobservationofthebatching,Fortheassessmentofcomplianceofready-mixed'equivalentstrength'gradesarenowgivenforconcrete,thepointandtimeofsamplingshallbeatwhichthestrengthcomplianceisdeemedtosatisfydischargefromtheproducer'sdeliveryvehicleoragivenminimumcementcontentand/ormaximumfromthemixerwhendeliveredintothepurchaser'sfreewater/cementratio.vehicle.ModificationshavebeenmadetothestrengthFortheassessmentofcomplianceofconcretecompliancerequirements.Thevalidityofthesuppliedtotheconstruction,thepointandtimeoftestingisnowcheckedbyapplyingalimittothesamplingshallbeatdeliveryintotheconstruction,rangeofthetwostrengthdeterminations,theunlessagreedotherwise.meanofwhichconstitutesthetestresult.ForNOTE.Samplestakenforassessingready-mixedconcretemaybeusedalsoforassessingcomplianceofconcreteassuppliedtothecompressivestrengths,requirementsaregivenforconstructionwheneither:thefirsttworesultsandthefirstthreeresults.(a)concreteisdischargedfromtheproducer·svehidedirectlyTheuseofsuperplasticizerstoproduceflowingintotheconstruction:orconcreteisaccommodatedbytheinclusionofflow(b)effectsduetotimedelays,ambientconditions,transponandhandlingbetweendischargefromtheproducer'svehicletablecompliancevalues.Samplingandtestingofanddeliveryintotheconstructionareagreedtobeminimal;concreteforcomplianceshouldbespecifiedtobeorcarriedoutbyorganizationsaccreditedbythewww.bzfxw.com(c)adjustmentstospecifiedvalueshavebeenagreedtotakeNationalMeasurementAccreditationServiceaccountofsignificanteffectsasunderitem(b).Such(NAMAS)fortherelevanttest.adjustmentsmaybenominalorbasedontrials.Similarly,samplestakenatthepointofproductionofconcrete,whetherready-mixed,sitemixedorfactoryprecast,1Scopemaybeusedtoassessconcretesuppliedtotheconstruction.ThisPartofBS5328specifiestheprocedurestobeWhenconcreteissampledforcompliancetestsatfollowedwhenassessingthequalityofconcreteforthepointofdeliveryintotheconstruction,thecompliancewithaspecificationpreparedinpurchasershallensurethatthesamplingisspreadaccordancewithBS5328:Part2.representativelywithinasingleidentifiedbatchasproduced,inaccordancewithBS1881:Part101.NOTE.Thetitlesofthepublicationsreferredtointhisstandardarelistedontheinsidebackcover.3.3Compliancewithconcretepropertiesandmixproportions2DeimitionsWhenpropertiesotherthanthosementionedinForthepurposesofthisPartofBS5328theBS5328:Part2arespecified(forexamplethermaldefinitionsgiveninBS5328:Part1andBS6100conductivityormodulusofelasticityofconcrete),apply..themethodoftest,thecompliancerequirementsandtolerancesshallbespecifiedoragreedinadvancebetweenthepurchaserandproducer.3Samplingandtesting3.4Temperatureoffreshconcrete3.1GeneralWhenrequired,thetemperatureofthefreshAllsamplingandtestingoftheconstituentconcreteshallbemeasuredinoneofthefollowingmaterialsshallbecarriedoutinaccordancewithways.theappropriateBritishStandard..ca)Within2minoftakingthesampleatdeliveryAllsampling,curingandtestingoftheconcrete,insertatypeA100mmimmersionthermometerfreshorhardened,shallbecarriedoutinhavingarangeof-5cCto+110cC,graduatedaccordance\iththerelevantPartsofBS1881ateach1cCandcomplyingwithBS1704,intheunlessstatedotherwiseinthisPartofBS5328.sampletoadepthofatleast100mm.When~ution.Whencementismixedwithwater,alkalisteadyconditionshavebeenmaintainedfor1min本资料由微信公众号jianzhu118整理ISrelt;ased.Thkeprecautionstoavoiddrycement·recordthetemperaturetothenearest1cC.entenngtheeyes,mouthandnosewhenmixing(b)Useanalternativeformoftemperature持续更新中ceme!'torconcretebywearingsuitableprotectivemeasurementwhichprovidesthesameaccuracy~lo~.Ifcementorconcreteenterstheeye,asgiveninitem(a).unmediatelywashitoutthoroughlywithcleanThem;asuredc?~c~etet~mperatu!eshallnotwaterandseekmedicaltrpBS1881:Part106isnotnecessarilyapplicabletoconcretemadethepercentageofsodiumoxideequivalent,withlightweightaggregates,air-cooledblastfuma~eslag,%(Na20)e,usingtheequation:aggregatesofhighporosity,verystiffconcretewhichca~m.otbecompactedbyvibrationaloneoraeratedconcrete.SpecialISt.%(Na20)e=%(Na20)+0.658(%(K20)]本资料由微信公众号jianzhu118整理ad;ceshouldbesoughtfrommaterialssuppliersorothersourcesonthemethodoftestwhenthesearerequired.持续更新中 BS5328:Part4:1990Theestimationofthereactivealkalicontentof3.8.2.5MethodqftestforaggregatesconcreteshallbebasedonthesummationoftheThechloridecontentofaggregatesshallbereactivealkalisinkilogramsineachofthedeterminedusingthemethodgiveninBS812:constituents.ThecalculationshallbebasedonPart117.Thesodiumoxideequivalentshallbeeither:calculatedbymultipl:ingthepercentageof(a)certifiedaveragealkalicontents;chlorideionby0.76.(b)declaredvalues;Thechlorideioncontentofaggregatescontaining(c)maximumvalueswhenspecifiedintheBritish0.01%chlorideionsbymassormoreshallbeStandardfortheconstituent;ordeterminedatleastweeklyinaccordancewithBS812:Part117.Whenthechlorideioncontentis(d)acombinationoftheabove.lessthan0.01%itshallberegardedasnil,andIfthereactivealkalis,summedfromalltheroutinetestingisnotrequiredforthepurposesofconstituentsotherthanthecementcomponents,thiscomplianceprocedure.are0.2kglm3orlesstheycanbeignoredinthecalculationofthereactivealkalicontent.3.8.3Useoftestresults3.8.3.1Certifiedaveragealkalicontents3.8.2MethodsoftestforalkaliCement,ggbsandpfasupplierswill,onrequest,3.8.2.1MethodoftestforPortlandcementprovideacertifiedaveragealkalicontentWhentestingcementcomplyingwithBS12,determinedbythemethodsgivenin3.8.1.TheBS1370orBS4027orthePortlandcementlatestavailabledatarelevanttotheperiodofcomponentofcompositecements,eitherthesupplyshallbeusedinthecalculations.methodgivenin16.2.4.1ofBS4550:Part2:1970,3.8.3.2MixproportionsorasecondaryX-raymethodcalibratedagainstthisThereactivealkalicontentpercubicmetreofmethod,shallbeadopted.concreteshallbecalculatedfromthedeclaredmixWhentestingcompositecementsthecomponentswww.bzfxw.comproportionsorfromthoseobtainedfromshallbetestedseparately.observationofthebatchingorfromexaminationoftheautographicrecordsofthebatching.3.8.2.2MethodAfortestingggbsandpfaWhentestingggbscomplyingwithBS6699,pfa3.8.4CompliancecomplyingwithBS3892:Part1orPart2ortheWhencomplianceisassessedbyacalculationbasedggbsorpfacomponentofcompositecements,oncertifiedaveragevaluesforreactivealkalieitherthemethodgivenin16.2.4.1(forggbs)orcontentofconstituentsandthedeclaredor16.2.4.2(forpfa)ofBS4550:Part2:1970,oraobservedcompositionoftheconcrete,thesecondaryX-raymethodcalibratedagainstthesecalculatedreactiYealkalicontentoftheconcrete,methods,shallbeadopted.ThereactivealkalishallexpressedasequiYalentsodiumoxidebymassofbetakenas50%ofthemeasuredvaluewhenconcrete,shallnotexceedthepermittedreactivetestingggbsor17%ofthemeasuredvaluewhenalkalicontent.testingpfa.Whencomplianceisassessedbyasingleanalysisof3.8.2.3MethodBfortestingggbsandpfareactivealkalicontentofoneormoreoftheconstituents,theconcreteshallbedeemedtoWhentestingggbscomplyingwithBS6699,pfacomplywiththepermittedreactivealkalicontentifcomplyingwithBS3892:Part1orPart2orthethecalculatedreactivealkalicontentoftheggbsorpfacomponentofcompositecements,theconcreteisnotgreaterthanthepermittedalkalimethodgivenin16.11ofConcreteSocietyReportcontentplus0.50kglm3(see4.2.4ofBS5328:No.30shallbeadopted.Part1:1990).3.8.2.4CalculationofreactivealkaliincompositeWhenassessmentisbasedonmorethanonesetofcementsandcombinationsmeasuredvaluesoronanalysisoffreshconcreteThereactivealkalicontent(Ar)ofthecementshall.fordeterminationofcomposition,compliancerulesbecalculatedfromthefollowingequation:shallbespecifiedoragreedinadvancebythepurchaserandproducer.Ar=(PAc+(100-P)Ab)/lOO3.9Minimizingtheriskofcrackingduetowherealkali-silicareactionbymethodsotherthanthe本资料由微信公众号jianzhu118整理PisthecontentofPortlandcementinthecontrolofalkalicementorcombination(in%m/m);持续更新中CompliancerequirementsshallbeagreedbetweenAcisthecontentofalkalisinthePortlandthepurchaserandproducerwhereprecautionsarecementcomponent(in%m/m);takentominimizetheriskofdamageduetoAbisthecontentofreactivealkalisintheggbsalkali-silicareactionbyeither: BS5328:Part4:1990(b)theuseofawellestablishedservicerecord3.13.3WherecomplianceisassessedfromthefortheparticularcementandaggregateresultsofoneoftheanalysistestsonthefreshcombinationshowingnohistoryofcrackingdueconcretedescribedinDD83,thecompliancelimitstoalkali-silicareaction.shallbespecifiedoragreedbythepurchaserandproducerbasedontheinformationgiveninDD83.3.10DensityoffreshconcreteWhereminimumdensityoffreshconcreteis3.14Maximumfreewater/cementratiospecified,themeanofanyfourconsecutive3.14.1Whereanequivalentgrade(see7.5ofdeterminationsinaccordancewithBS1881:BS5328:PartI:1990)ispermittedtobeusedtoPart107shallbenotlessthanthespecifiedvalueprovideassuranceofmaximumfreewater/cementandanyindividualresultshallbenotlessthanratio,theconcreteshallbedeemedtocomplywith97.5%ofthespecifiedvalue.thespecifiedmaximumfreewater/cementratioifWheremaximumdensityoffreshconcreteisthecompressiwstrengthresultsfortheequivalentspecified,themeanofanyfourconsecutivegradecomply\iththerequirementsof3.16.2.determinationsinaccordancewithBS1881:3.14.2WherecompliancewiththespecifiedPart107shallbenotmorethanthespecifiedvaluemaximumfreewater/cementratioisassessedbyandanyindividualresultshallbenotmorethanobservationofthebatchingorfromexaminationof102.5%ofthespecifiedvalue.theautographicrecordsofthebatchingplant,3.11DensityofhardenedconcreteallowanceshallbemadeforthewaterintheWhereminimumdensityofhardenedconcreteisaggregatesandadmixtures.Themeanfreespecified,themeanofanyfourconsecutivewater/cementratioofanyfourconsecutivedeterminationsinaccordancewithBS1881:observationsshallbenotgreaterthanthespecifiedPart114shallbenotlessthanthespecifiedvaluemaximum"alueandanyindividualobservedfreeandanyindividualresultshallbenotlessthanwater/cementratioshallbenotmorethan5%95%ofthespecifiedvalue.www.bzfxw.comgreaterthanthevaluespecified.Wheremaximumdensityofhardenedconcreteis3.14.3""herecompliancewiththespecifiedspecified,themeanofanyfourconsecutivemaximumfreewater/cementratioisassessedusingdeterminationsinaccordancewithBS1881:workabilitytestresults,satisfactoryevidenceofthePart114shallbenotmorethanthespecifiedvaluerelationshipbetweenfreewater/cementratioandandanyindividualresultshallbenotmorethanworkabilityforthematerialsusedshallbeavailable105%ofthespecifiedvalue.(see3.5ofBS5:328:Part3:1990).Compliancewiththemaximumfreewater/cementratioshallbe3.12Cementcontentormixproportionsbythedeemedtobesatisfiedwhentheworkabilityanalysisoffreshconcretecomplieswith3.5providedthematerialsareinWherefreshconcreteistobeanalysedtocomplianceandthecementcontentisasdeclareddeterminethemixproportions,cementcontentor(seeclause3ofBS5328:Part3:1990).freewater/cementratio,thesamplingandtestingshallbecarriedoutbyamethodspecifiedinDD833.14.4Wherecomplianceisassessedfromtheorasotherwiseagreed.resultsofoneoftheanalysistestsonthefreshconcretedescribedinDD83,thecompliancelimits3.13MinimumormaximumcementcontentshallbespecifiedoragreedbythepurchaserandproducerbasedontheinformationgiveninDD83.3.13.1Whereanequivalentgrade(see7.5ofBS5328:Part1:1990)ispermittedtobeusedto3.15Specifiedmixproportions(prescribedandprovideassuranceofminimumcementcontent,thestandardmixesonly)concreteshallbedeemedtocomplywiththespecifiedminimumcementcontentifthe3.15.1Whencomplianceisassessedbyeitherobservationofthebatching,orexaminationofthecompressivestrengthresultsfortheequivalentgradecomplywiththerequirementsof3.16.1.autographicrecordsofthebatchweightsused,anindividualassessmentofthemixproportionsshall3.13.2Wherecomplianceisassessedbybewithin±5""ofthevaluesspecifiedandtheobservationofthebatchingorfromexaminationofmeanofanyfourconsecutiveassessmentsoftheautographicrecordsofthebatchingplant,thecementcontentshallbenotlessthanthespecifiedmeanofanyfourconsecutiveobservedcementvalue.Accountshallbetakenoftheadjustmentscontentsshallbenotlessthanthespecifiedpermittedin4.3.2ofBS5328:Part3:1990.本资料由微信公众号jianzhu118整理minimumvalueornotgreaterthanthespecified持续更新中3.15.2Wherecomplianceisassessedfromthemaximumvalueandanyindividualobservedresultsofoneoftheanalysistestsonthefreshcementcontentshallbenotlessthan95%oftheconcretespecifiedinDD83,thecompliancelimitsspecifiedminimumvalueornotgreaterthan105%_.I!.....1-._~_~~.:.c':.-.....J~..........:,;__"..__..........1"",...shallbespecifiedoragreedbythepurchase~~~~ BS5328:Part4:19903.16Strength(fordesignedmixesorwhereThble1.Characteristiccompressivestrengthequivalentgradeisusedtoassesscompliancecompliancerequirementsforminimumcementcontentormaximumfreewater/cementratio)SpecifiedgroupoftestABgraderesults3.16.1SamplingandtestingThemeanofAnyBatchesofconcretetobetestedshallbeselectedatthegroupofindividualtestresultstestresultisrandomandasampleobtainedbytakinganumberexceedsthenotlessthanofincrementsinaccordancewithBS1881:specifiedthePart101.characteristiccharacteristiccompressivecompressiveTwocompressivestrengthtestspecimensforthestrengthbystrengthless:selectedageforcompliancetestingshallbeatleast:preparedfromthesampleasdescribedinBS1881:PaJ;t108andboththespecimensshallbecuredinN/mm2N/mm2oneofthefollowingways:C20andfirst213(a)for28daysasdescribedinBS1881:Part111;aboveorfirst323(b)byanyotherregimeofcuringspecifiedoranyagreedbetweentheproducerandpurchaser(e.g.consecutive4337days,normalcuringoracceleratedcuringatanC7.5tofirst202elevatedtemperature(seeBS1881:Part112))C15thatwillenablethestrengthat28daystobefirst312predicted.anyOncompletionofthecuring,thespecimensshallconsecutive422betestedandthemeanofthetworesultsshallbewww.bzfxw.comtakenasthetestresult.3.17QuantityofconcreterepresentedbystrengthtestresultsWhenthedifferencebetweenthetworesultsdividedbytheirmeanexceeds15%,thetestresultThequantityofconcreterepresentedbyagroupofshallbedeemedinvalid.fourconsecutivetestresultsshallincludethebatchesfromwhichthefirstandlastsampleswere3.16.2Compressivestrengthtakentogetherwithallinterveningbatches.Whenboththefollowingconditionsaremet,theSimilarly,thefirsttwoorthreeresultsshallbeconcretecomplieswiththespecifiedcompressivetakenasrepresentingalltheinterveningbatches.strength.FortheindividualtestresultrequirementsgivenincolumnBoftable1,orinitem(b)of3.16.3,only(a)Themeanstrengthdeterminedfromthefirsttheparticularbatchfromwhichthesamplewastwo,threeorfourconsecutivetestresults,ortakenshallbeatrisk.fromanygroupoffourconsecutivetestresultscomplies"iththeappropriatelimitsincolumnAIfthepurchaserfailstospecifythemeanrateofoftable1.sampling(seeBS5328:Part2),orfailstooperatethespecifiedrate,themaximumquantityof(b)AnyindividualtestresultcomplieswiththeappropriatelimitsincolumnBoftable1.concretethatfourconsecutivetestresultsrepresentshallbelimitedto60m3.3.16.3FlexuralstrengthWhenboththefollowingconditionsaremet,theconcretecomplieswiththespecifiedflexuralstrength.(a)Themeanstrengthdeterminedfromanygroupoffourconsecutivetestresultsexceedsthespecifiedcharacteristicstrengthbyatleast0.3N/mm2.~)ThestrengthdeterminedfromanytestresultISnotlessthanthespecifiedcharacteristicstrengthless0.3N/mm2.本资料由微信公众号jianzhu118整理持续更新中 AMD8760STANDARDSAmendmentNo.2publishedandeffectivefrom15September1995toBS5328:Part4:1990ConcretePart4.Specificationfortheprocedurestobeusedinsampling,testingandassessingcomplianceofconcreteRevisedtextClause3.16.2CompressivestrengthAfteritemCb),insertthefollowing.NOTE.Itshouldbprpcognizpdthatpvpnforwpllcontrollpdcontinuousproduction.statisticalanalysisofstrengthdatawillgiveasmallprobabilitythataresultindicatesanon-compliancewithcriteria(a)or(b).Adviceontheactiontobetakenintheevpntofsuchnon-complianceisgiwninclause9ofSS5328:Part1:1991.AMD87601Septernber1995www.bzfxw.comClause3.16.3FlexuralstrengthAfteritemCb)insertthefollowing.NOTE.Itshouldberecognizedthatevenforwellcontrolledcontinuousproduction,statisticalanalysisofstrengthdatawillgiveasmallprobabilitythataresultindicatesanon-compliancewithcriteria(a)or(b).Adiceontheactiontobetakenintheeventofsuchnon-complianceisgiwninclause9ofSS5328:Part1:1991.AMD87601Septernber1995本资料由微信公众号jianzhu118整理持续更新中 IncorporatingAmendmentsNos.1and2andimplementingAmendmentNo.3,rwtpublishedsepamtelyConcrete97if.08})cPart4.Specificationfortheprocedures'.tobeusedinsampling,testingandassessingcomplianceofconcretewww.bzfxw.comICS91.100.30..~~.....本资料由微信公众号jianzhu118整理~~~'!!=-.iiii持续更新中NOCOPYINGWITHOU.TBSIPERMISSIONEXCEPTASPERMITTEDBYCOPTIGHrLAW~.,.",- BS5328:Part4:1990ContentsPageCommitteesresponsibleInsidefrontcoverForeword2SpecificationoIntroduction41Scope42Definitions43Samplingandtesting4'l8.ble1Characteristiccompressivestrengthcompliancerequirements8www.bzfxw.com本资料由微信公众号jianzhu118整理持续更新中 BS5328:Part4:1990ForewordThisPartofBS5328hasbeenpreparedunderthedirectionoftheCement,Gypsum,AggregatesandQuarryProductsStandardsPolicyCommittee.ThisPart,togetherwithBS5328:Parts1,2and3,isarevisionofBS5328:1981,whichiswithdrawn,andformsacomprehensivestandardforthespecificationofconcretetowhichcodesofpracticeandcontractualdocumentscanrefer.Itincludesrecommendationsoriginatingfrom,andcomplementingclausesin,BS8110:Part1.Asthisstandardinvolvesselectionbythespecifierfromanumberofoptionsand,incertaininstances,agreementonrequirementsbetweenthepurchaserandproducer,anyrequirementforcompliancewithBS5328oranyclaimofcompliancewithithastobequalifiedbyreferencetotheselectionandtoanysuchagreements.Thisstandardcoversthemethodsforspecifyingandproducingconcreteasaconstructionmaterialuptothepointofdeliveryintotheconstruction.ThestandardisnowinfourParts:Partl.GuidetospecifyingconcretePart2.MethodsforspecifyingconcretemixesPart3.SpecificationfortheprocedurestobeusedinproducingandtransportingconcretePart4.Specificationfortheprocedurestobeusedinsampling,testingandassessingcomplianceofconcretePart1providesguidancewww.bzfxw.comtothespecifierandpurchaserofconcreteontheselectionofrequirementsformaterialsandconcretemixes.Part2providesachoiceofmethodsbywhichthepurchasercanconveytheselectedrequirementstotheproducer.Part3specifiesfortheproducertheprocedurestobeusedinproducingandtransportingtheconcrete.Part4specifiestheprocedurestobeusedbythepurchaserinsampling,testingandassessingconcreteforcompliance.Thisstandardprovidesmethodsforspecifyingconcretemixedonsiteorinaprecastconcretefactoryandforthepurchaseandsupplyofready-mixedconcrete.Ittakesaccountofthedistinctanddifferentresponsibilitiesofthepurchaserandtheproducer.Thereareanumberofinstancesinwhichthepurchaserhastoselectfromthevariousoptionsgiveninthisstandardinordertospecifytheconcreterequired.Thepurchaserisresponsibleforpassingontotheproducertherequirementsofthespecifyingbody,e.g.theengineer'sorarchitect'sspecification,togetherwithanyadditionalrequirements.Throughoutthisstandardtheterms'specify'and'specification'areusedinrelationtobothsetsofrequirements.Theremaybeoccasionswhereitisadvantageousforeconomicortechnicalreasonstoproposechangestothespecification.Insuchcasestheproducerandpurchasershouldagreetheproposedamendmentsfor.approvalandsanctionbythespecifyingbody.Precautionsneedtobetakenwhenworkingwithcementand.wetconcreteandattentionisdrawntotheseinBS5328:Parts3and4.Thisstandardcoversconcreteproducedbynormalmethods,butitdoesnotapplytoprecastconcreteproductswhereBritishStandardspecificationscontainthespecificationoftheconcrete.Manyoftherequirementsofthestandard,e.g.theuseofmaterialsandthecontrolofproduction,applyequallytoprecastconcreteandtoinsituconcrete.However,someofitsrequirementsconcerningtheresponsibilitiesofthepurchaserandproducermaynotapplyinthecaseofprecastconcrete.Thespecificationofdesignatedmixesisunlikelytobe本资料由微信公众号jianzhu118整理appropriateforfactoryproducedprecastconcreteproducts.......持续更新中 BS5328:Part4:1990Itisnecessaryforthepurchasertotakeintoaccounttherequirementsofspecializedcodesofpracticeandanyinfluencesoftheconstructionprocess.Provisionsaremadeinthisstandardfortheinclusionofanyspecialrequirements.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.www.bzfxw.com本资料由微信公众号jianzhu118整理持续更新中 BS·5328:Part4:1990SpecificationoIntroductionWhensamplingandtestingforcompliancearerequiredtobequalityassured,evidenceofThisPartofBS5328describesmethodsofsamplingcertificationandanychangeincertificationshallandtestingofconcrete,whichhavebeenspecifiedbeprovidedonrequest.inaccordancewithBS5328:Part2,anddefines,Theproducershallbeaffordedallreasonableforbothpurchaserandproducer,thecomplianceopportunityandfacilitytoinspectthesamplingandlimitsforthevariousteststhatmaybespecified.testingregimeemployedbythepurchaser.Asanalternativetoassessingcompliancewithcementcontentorwater/cementratiorequirements3.2Pointandtimeofsamplingbyanalysis,orobservationofthebatching,Fortheassessmentofcomplianceofready-mixed'equivalentstrength'gradesarenowgivenforconcrete,thepointandtimeofsamplingshallbeatwhichthestrengthcomplianceisdeemedtosatisfydischargefromtheproducer'sdeliveryvehicleoragivenminimumcementcontentand/ormaximumfromthemixerwhendeliveredintothepurchaser'sfreewater/cementratio.vehicle.ModificationshavebeenmadetothestrengthFortheassessmentofcomplianceofconcretecompliancerequirements.Thevalidityofthesuppliedtotheconstruction,thepointandtimeoftestingisnowcheckedbyapplyingalimittothesamplingshallbeatdeliveryintotheconstruction,unlessagreedotherwise.rangeofthetwostrengthdeterminations,themeanofwhichconstitutesthetestresult.ForNarE.Samplestakenforassessingready-mixedconcretemaybeusedalsoforassessingcomplianceofconcreteassuppliedtothecompressivestrengths,requirementsaregivenforconstructionwheneither:theflI'Sttworesultsandthefirstthreeresults.(a)concreteisdischargedfromtheproducer'svehicledirectlyTheuseofsuperplasticizerstoproduceflowingintotheconstruction;orconcreteisaccommodatedbytheinclusionofflow'(b)effectsduetotimedelays,ambientconditions,transportandhandlingbetweendischargefromtheproducer'svehicletablecompliancevalues.Samplingandtestingofanddeliveryintotheconstructionareagreedtobeminimal;concreteforcomplianceshouldbespecifiedtobeorcarriedoutbyorganizationsaccreditedbythewww.bzfxw.com(c)adjustmentstospecifiedvalueshavebeenagreedtotakeNationalMeasurementAccreditationServiceaccountofsignificanteffectsasunderitem(b).Such(NAMAS)fortherelevanttest.adjustmentsmaybenominalorbasedontrials.Similarly,samplestakenatthepointofproductionofconcrete,whetherready-mixed,sitemixedorfactoryprecast,1Scopemaybeusedtoassessconcretesuppliedtotheconstruction.ThisPartofBS5328specifiestheprocedurestobeWhenconcreteissampledforcompliancetestsatfollowedwhenassessingthequalityofconcreteforthepointofdeliveryintotheconstruction,thecompliancewithaspecificationpreparedinpurchasershallensurethatthesamplingisspreadrepresentativelywithinasingleidentifiedbatchasaccordancewithBS5328:Part2.produced,inaccordancewithBS1881:Part101.KarE.Thetitlesofthepublicationsreferredtointhisstandardarelistedontheinsidebackcover.3.3Compliancewithconcretepropertiesandmixproportions2Def"mitionsWhenpropertiesotherthanthosementionedinBS5328:Part2arespecified(forexamplethermalForthepurposesofthisPartofBS5328theconductivityormodulusofelasticityofconcrete),definitionsgiveninBS5328:Part1andBS6100apply.themethodoftest,thecompliancerequirementsandtolerancesshallbespecifiedoragreedinadvancebetweenthepurchaserandproducer.3Samplingandtesting3.4Temperatureoffreshconcrete3.1General-Whenrequired,thetemperatureofthefreshAllsamplingandtestingoftheconstituentconcreteshallbemeasuredinoneofthefollowingmaterialsshallbecarriedoutinaccordancewithways.theappropriateBritishStandard.(a)Within2minoftakingthesampleatdeliveryAllsampling,curingandtestingoftheconcrete,insertatypeA100mmimmersionthermometerfreshorhardened,shallbecarriedoutinhavingarangeof-5°Cto+110cC,graduated,accordancewiththerelevantPartsofBS1881ateach1°CandcomplyingwithBS1704,intheunlessstatedotherwiseinthisPartofBS5328.sampletoadepthofatleast100mm.When~ution.Whencementismixedwithwater,alkalisteadyconditionshavebeenmaintainedfor1min15rel:ased.Thkeprecautionstoavoiddrycementrecordthetemperaturetothenearest1°C.本资料由微信公众号jianzhu118整理entenngtheeyes,mouthandnosewhenmixing(b)Useanalternativeformoftemperature持续更新中ceme~torconcretebywearingsuitableprotectivemeasurementwhichprovidesthesameaccuracy~lo~.Ifcementorconcreteenterstheeye,asgiveninitem(a).unmedlatelywashitoutthoroughlywithclean.Themeasuredconcretetemperatureshallnot~ater8s'handseekmedicaltreatmentwithoutdelay.exceedanyspecifiedmaximumvalueorfallbelow~tI'l" 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3.5Workability3.7ChloridecontentoffreshconcreteTheworkabilityshallbewithinthefollowinglimits3.7.1Methodsofcalculationandtestonthespecifiedvalueasappropriate.UnlessotherwisespecifiedandagreedbetweenSlumppurchaserandproducer,themethodofcalculationandtestshallbebaseduponthechloridecontents(i)Whensampledin±25mmor±Ihoftheoftheconstituentsandthecompositionoftheaccordancewithspecifiedvalue,whicheverconcrete.ThechloridecontentofeachconstituentBS1881:Part101isthegreater.usedinthecalculationshallbeoneofthe(ii)WhensampledinSpecified'Iblerancefollowing:accordancewithvalue(a)themeasuredvalue;BS1881:Part102(b)thevaluedeclaredbythemanufacturer;10mm+35mm(c)themaximumvaluewherespecifiedinthe-10mmBritishStandardfortheconstituentas25mm+35mmappropriate(see5.2.2ofBS5328:-25mmPart1:1997).50mm±35Themethodofmeasuringchloridecontentunder75mmand±[(If!item(a)or(b)shallbeasfollows:overspecifiedcement,groundgranulatedBS4550:Part2slump)blastfurnaceslag(ggbs)and+10mm]pulverized-fuelash(pfa)LimitsforintermediateslumpsshallbederivedaggregateBS812:Part117byinterpolation.admixtureBS5075:Part1Vebetime±3sor±tofthe.water9.2ofBS812:specifiedvalue,whicheverPart117:1988isthegreaterThecompositionofthefreshconcreteusedintheCompacting{actor±0.03,wherespecifiedcalculationshallbeeitherthatdeclaredasrequiredvalueis0.90orgreater.www.bzfxw.comunder3.1ofBS5328:Part3:1990orthat±0.04,wherespecifiedobtainedfromobservationofthebatchingorfromvalueislessthan0.90butexaminationofautographicrecordsofthebatchingmorethan0.80.plant.±0.05,wherespecified3.7.2Compliancevalueis0.80orless.WhenassessmentofcomplianceisbasedonFlowSpecifiedvalue±50mmspecifiedordeclaredvaluesforchloridecontentofconstituentsandthedeclaredorobserved3.6Aircontentoffreshconcretecompositionoftheconcrete,thecalculatedThetotalaircontentdeterminedfromindividualchloridecontentoftheconcreteexpressedasthesamplesofconcretetakenatthepointofdeliverypercentageofchlorideionbymassofcementshallintotheconstructionandrepresentativeofanynotexceedthespecifiedmaximumvalue.givenbatchofconcreteshallbethespecifiedtotalWhenassessmentisbasedonmeasuredvaluesofvalue±2.0%.Themeantotalaircontentfromanychloridecontentofthefreshconcreteoronfourconsecutivedeterminationsfromseparateanalysisoffreshconcretefordeterminationofbatchesshallbe:thespecifiedvalue±1.5%.composition,compliancerulesshallbespecifiedorNOfE1.'Ibtalaircontentcomprisesentrainedairplusagreedinadvancebythepurchaserandproducer.entrappedairremainingaftercompaction.NOfE2.Incertainformsofconstruction,e.g.airfield3.8Reactivealkalicontentofconcretepavements,tolerancesontheaircontentmayneedtobeagreedbetweenthepurchaserandtheproducer.3.8.1GeneralNOfE3.ThemethodofmeasuringaircontentdescribedinTheconcentrationofalkalisshallbeexpressedasBS1881:Part106isnotnecessarilyapplicabletoconcretethepercentageofsodiumoxideequivalent,madewithlightweightaggregates,air-cooledblastfurnaceslag,%(Na20)e,usingtheequation:aggregatesofhighporosity,verystiffconcretewhichcannotbecompactedbyvibrationaloneoraeratedconcrete.Specialist%(Na20)e=%(Na20)+0.658{%(K20)}adviceshouldbesoughtfrommaterialssuppliersorothersourcesonthemethodoftestwhenthesearerequired.本资料由微信公众号jianzhu118整理持续更新中 Theestimationofthereactivealkalicontentof3.8.2.5MethodoftestforaggregatesconcreteshallbebasedonthesummationoftheThechloridecontentofaggregatesshallbereactivealkalisinkilogramsineachofthedeterminedusingthemethodgiveninBS812:constituents.ThecalculationshallbebasedonPart117.Thesodiumoxideequivalentshallbeeither:calculatedbymultiplyingthepercentageof(a)certifiedaveragealkalicontents;chlorideionby0.76.(b)declaredvalues;Thechlorideioncontentofaggregatescontaining(c)maximumvalueswhenspecifiedintheBritish0.01%chlorideionsbymassormoreshallbeStandardfortheconstituent;ordeterminedatleastweeklyinaccordancewith(d)acombinationoftheabove.BS812:Part117.Whenthechlorideioncontentislessthan0.01%itshallberegardedasnil,andIfthereactivealkalis,summedfromalltheroutinetestingisnotrequiredforthepurposesofconstituentsotherthanthecementcomponents,are0.2kg/m3orlesstheycanbeignoredinthethiscomplianceprocedure.calculationofthereactivealkalicontent.3.8.3Useoftestresults3.8.2Methodsoftestforalkali3.8.3.1Certifiedaveragealkalicontents3.~.2.1MethodoftestforPortlandcementsCement,ggbsandpfasupplierswill,onrequest,provideacertifiedaveragealkalicontentWhentestingcementcomplyingwithBS12,determinedbythemethodsgivenin3.8.1.TheBS1370,BS4027,BS7583orthePortlandcementlatestavailabledatarelevanttotheperiodofcomponentofcompositecementscontainingggbssupplyshallbeusedinthecalculations.orpfa,eitherthemethodgiveninNA.5.1ofBSEN196-21:1992,orasecondaryX-raymethod3.8.3.2Mixproportionscalibratedagainstthismethod,shallbeadopted.ThereactivealkalicontentpercubicmetreofWhentestingcompositecementscontainingggbsorconcreteshallbecalculatedfromthedeclaredmixpfathecomponentsshallbetestedseparately.proportionsorfromthoseobtainedfromobservationofthebatchingorfromexaminationof3.8.2.2MethodAfortestingggbsandpfatheautographicrecordsofthebatching.WhentestingggbscomplyingwithBS6699,pfa3.8.4CompliancecomplyingwithBS3892:Part1orPart2orthewww.bzfxw.comggbsorpfacomponentofcompositecements,WhencomplianceisassessedbyacalculationbasedeitherthemethodgiveninNA.5.1(forggbs)oncertifiedaveragevaluesforreactivealkaliorNA.5.2(forpfa)ofBSEN196-21:1992,oracontentofconstituentsandthedeclaredorsecondaryX-raymethodcalibratedagainsttheseobservedcompositionoftheconcrete,themethods,shallbeadopted.Thereactivealkalishallcalculatedreactivealkalicontentoftheconcrete,betakenas50%ofthemeasuredvaluewhenexpressedasequivalentsodiumoxidebymassoftestingggbsor17%ofthemeasuredvaluewhenconcrete,shallnotexceedthepermittedreactivetestingpfa.alkalicontent.3.8.2.3MethodBfortestingggbsandptaWhencomplianceisassessedbyasingleanalysisofreactivealkalicontentofoneormoreoftheWhentestingggbscomplyingwithBS6699,pfaconstituents,theconcreteshallbedeemedtocomplyingwithBS3892:Part1orPart2orthecomplywiththepermittedreactivealkalicontentifggbsorpfacomponentofcompositecements,thethecalculatedreactivealkalicontentofthemethodgivenin16.11ofConcreteSocietyReportconcreteisnotgreaterthanthepermittedalkaliNo.30shallbeadopted.contentplus0.50kglm3(see5.2.4ofBS5328:3.8.2.4CalculationofreactivealkalicontentofPart1:1997).compositecementsandcombinationscontainingWhenassessmentisbasedonmorethanonesetofggbsorptameasuredvaluesoronanalysisoffreshconcreteThereactivealkalicontent
