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【英文标准名称】:StandardTestMethodforPotentialAlkaliReactivityofCarbonateRocksasConcreteAggregates(Rock-CylinderMethod)
【原文标准名称】:用作混凝土集料的碳酸盐岩石潜在碱活性的标准试验方法(岩石柱法)
【标准号】:ASTMC586-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C09.26
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:集料;强碱;碳酸盐;水泥;混凝土;试验;施工材料
【英文主题词】:aggregate;alkalireactivity;carbonaterocks;concrete;deleteriousexpansion
【摘要】:Thistestmethodisintendedtogivearelativelyrapidindicationofthepotentialexpansivereactivityofcertaincarbonaterocksthatmaybeusedasconcreteaggregates.Thetestmethodhasbeensuccessfullyusedin(1)researchand(2)preliminaryscreeningofaggregatesourcestoindicatethepresenceofmaterialwithapotentialfordeleteriousexpansionwhenusedinconcrete.Thetestmethodisintendedasaresearchandscreeningmethodratherthanasthebasisofaspecificationrequirement.Itisintendedtosupplementdatafromfieldservicerecords,petrographicexaminationsaccordingtoGuideC295,andtestsofaggregateinconcreteaccordingtoTestMethodC1105.Alkaliesparticipatingintheexpansivereactionswithaggregateconstituentsinconcreteusuallyarederivedfromthehydrauliccement;undercertaincircumstancestheymaybederivedfromotherconstituentsofconcreteorfromexternalsources.Twotypesofalkalireactivityofaggregatesarerecognized:(1)alkali-silicareactioninvolvingcertainsiliceousrocks,minerals,andartificialglasses,and(2)alkalicarbonatereactioninvolvingdolomiteincertaincalciticdolomites,dolomiticlimestones,anddolostones.Thistestmethodisnotsuitableasameanstodetectalkali-silicareaction.1.1Thistestmethodcoversthedeterminationoftheexpansionofaspecimenofcarbonaterockwhileimmersedinasolutionofsodiumhydroxide(NaOH)atroomtemperature.Thelengthchangesoccurringduringsuchimmersionindicatethegenerallevelofreactivityoftherockandwhethertestsshouldbemadetodeterminetheeffectofaggregatepreparedfromtherockuponthevolumechangeinconcrete.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsinparenthesesareprovidedforinformationonly.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:5P.;A4
【正文语种】: