ASTM C227-2003 水泥集料混合物的潜在碱反应性的标准试验方法(灰浆棒法)

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【英文标准名称】:StandardTestMethodforPotentialAlkaliReactivityofCement-AggregateCombinations(Mortar-BarMethod)
【原文标准名称】:水泥集料混合物的潜在碱反应性的标准试验方法(灰浆棒法)
【标准号】:ASTMC227-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:试验;水泥;组合;集料;耐碱性;建筑;施工材料
【英文主题词】:aggregate;alkali-silicareaction;cement;lengthchange;mortar
【摘要】:1.1Thistestmethodcoversthedeterminationofthesusceptibilityofcement-aggregatecombinationstoexpansivereactionsinvolvinghydroxylionsassociatedwiththealkalies(sodiumandpotassium)bymeasurementoftheincrease(ordecrease)inlengthofmortarbarscontainingthecombinationduringstorageunderprescribedconditionsoftest.1.2Alkaliesparticipatingintheexpansivereactionsusuallyarederivedfromthecement;undersomecircumstancestheymaybederivedfromotherconstituentsoftheconcreteorfromexternalsources.Twotypesofalkalireactivityofaggregatesarerecognized:(1)analkali-silicareactioninvolvingcertainsiliceousrocks,minerals,andnaturalorartificialglassesand(2)analkali-carbonatereactioninvolvingdolomiteincertaincalciticdolomitesanddolomiticlimestones(seeStandardC294).Themethodisnotrecommendedasameanstodetectthelatterreactionbecauseexpansionsproducedinthemortar-bartestbythealkali-carbonatereaction(seeTestMethodC586)aregenerallymuchlessthanthoseproducedbythealkali-silicareactionforcombinationshavingequallyharmfuleffectsinservice.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thenon-SIvalues,showninparentheses,areforinformationalpurposesonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_10
【页数】:5P.;A4
【正文语种】: