ASTM C780-2007a 普通及加筋圬工用灰浆的预施工和施工评估用标准试验方法

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【英文标准名称】:StandardTestMethodforPreconstructionandConstructionEvaluationofMortarsforPlainandReinforcedUnitMasonry
【原文标准名称】:普通及加筋圬工用灰浆的预施工和施工评估用标准试验方法
【标准号】:ASTMC780-2007a
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:C12.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑;施工材料;砖石工程;材料;灰浆
【英文主题词】:aggregateratio;aircontent;compressivestrength;concretepenetrometer;conepenetrometer;consistency;consistencyretention;mortar;tensilestrength;
【摘要】:5.1Duringpreconstructionandconstructionevaluations,useofthesetestmethodsestablishesspecificandoverallperformancecharacteristicsforthemortarsystem.5.2Preconstructiontestingofmortarsprebatchedbyweightprovidesinformationfortheselectionoftheindividualmortarsystembestsuitedforthemasonrytobeconstructed.Therecommendedtestsandtheirsignificanceareasfollows:5.2.1Consistencydeterminationsbyconepenetrationallowgagingthewateradditionsforallmortarsincludedinthepreconstructiontestseries.Evenifthemortarconsistencyasmeasuredattheconstructionsiteisatadifferentpenetrationvaluethanthosemeasuredduringthepreconstructiontests,theconepreparationtestservestostandardizewateradditionsformortarsbeingconsideredasalternativesbeforeconstruction.Additionaltestingofmortarwatercontent-consistencyrelationships(AnnexA4)willallowrelatingthesetwofactorstobatch-to-batchvariationsattheconstructionsite.5.2.2Consistencyretentionbyconepenetrationusingdisturbedorundisturbedmortarsamplesprovidesameansofestablishingtheearly-agesettingandstiffeningcharacteristicsofthemortars.Becauselaboratorytestingisconductedunderstaticclimaticconditions,consistency1.1Thistestmethodcoversproceduresforthesamplingandtestingofmortarsforcompositionandfortheirplasticandhardenedproperties,eitherbeforeorduringtheiractualuseinconstruction.Note18212;GuideC1586providesguidanceonevaluatingmortarandclarifiesthepurposeofboththistestmethodandSpecificationC270.Note28212;ThetestingagencyperformingthistestmethodshouldbeevaluatedinaccordancewithPracticeC1093.1.2PreconstructionEvaluation-Thistestmethodpermitscomparisonsofmortarsmadefromdifferentmaterialsundersimulatedfieldconditions.Itisalsousedtoestablishbaselinevaluesforcomparativeevaluationoffieldmortars.1.3ConstructionEvaluation-Useofthismethodinthefieldprovidesameansforqualityassuranceoffield-mixedmortar.Itincludesmethodsforverifyingthemortarmixproportions,comparingtestresultsforfieldmortarstopreconstructiontesting,anddeterminingbatch-to-batchuniformityofthemortar.1.4Thetestresultsobtainedunderthistestmethodarenotrequiredtomeettheminimumcompressivevaluesinaccordancewit
【中国标准分类号】:Q13
【国际标准分类号】:91_100_10;91_100_10
【页数】:17P.;A4
【正文语种】: