ASTM C156-2011 通过混凝土用液膜成型固化化合物[来自灰泥样品]测定失水量的标准试验方法
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【英文标准名称】:StandardTestMethodforWaterLoss[fromaMortarSpecimen]ThroughLiquidMembrane-FormingCuringCompoundsforConcrete
【原文标准名称】:通过混凝土用液膜成型固化化合物[来自灰泥样品]测定失水量的标准试验方法
【标准号】:ASTMC156-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:C09.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:混凝土养护材料;保水性;化合物(固化);(固化)混凝土;膜
【英文主题词】:concretecuringmaterials;Waterretention;Compound(curing);Curing(ofconcrete);Film
【摘要】:Themoistureretainingabilityofaproductasdeterminedbythistestmethodisusedtoassessthesuitabilityofmaterialsforcontributingtoanappropriatecuringenvironmentforconcrete.Thelaboratorytestmethodisusedbothinformulatingandinspecifyingorqualifyingcuringproducts.Thistestmethodgivestheuserameasureoftheabilityoftestedcuringmaterialstoimpedetheescapeofmoisturefromahydrauliccementmortar.Sinceitisdesirabletoretainmoistureinfreshconcretetopromotethehydrationprocess,failureoftheproducttominimizetheescapeofmoisturemayleadtolossofstrength,cracking,shrinkage,orlowabrasionresistanceofthehardenedconcrete,oracombinationthereof.Manyfactorsaffectthelaboratorytestresults.Testresultsobtainedmaybehighlyvariableasindicatedbytheprecisionstatement.Criticalfactorsincludetheprecisionofthecontrolofthetemperature,humidityandaircirculationinthecuringcabinet,preparationandsealingofthemortarspecimens,theageandsurfaceconditionofthemortarspecimenwhenthecuringproductisapplied,andtheuniformityandquantityofapplicationofthecuringmembrane.1.1Thistestmethodcoverslaboratorydeterminationoftheefficiencyofliquidmembrane-formingcompoundsforcuringconcrete,asmeasuredbytheirabilitytoreducemoisturelossfrommortarspecimensduringtheearlyhardeningperiod.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Warning8212;Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:
【国际标准分类号】:91_100_30
【页数】:5P.;A4
【正文语种】:
【原文标准名称】:通过混凝土用液膜成型固化化合物[来自灰泥样品]测定失水量的标准试验方法
【标准号】:ASTMC156-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:C09.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:混凝土养护材料;保水性;化合物(固化);(固化)混凝土;膜
【英文主题词】:concretecuringmaterials;Waterretention;Compound(curing);Curing(ofconcrete);Film
【摘要】:Themoistureretainingabilityofaproductasdeterminedbythistestmethodisusedtoassessthesuitabilityofmaterialsforcontributingtoanappropriatecuringenvironmentforconcrete.Thelaboratorytestmethodisusedbothinformulatingandinspecifyingorqualifyingcuringproducts.Thistestmethodgivestheuserameasureoftheabilityoftestedcuringmaterialstoimpedetheescapeofmoisturefromahydrauliccementmortar.Sinceitisdesirabletoretainmoistureinfreshconcretetopromotethehydrationprocess,failureoftheproducttominimizetheescapeofmoisturemayleadtolossofstrength,cracking,shrinkage,orlowabrasionresistanceofthehardenedconcrete,oracombinationthereof.Manyfactorsaffectthelaboratorytestresults.Testresultsobtainedmaybehighlyvariableasindicatedbytheprecisionstatement.Criticalfactorsincludetheprecisionofthecontrolofthetemperature,humidityandaircirculationinthecuringcabinet,preparationandsealingofthemortarspecimens,theageandsurfaceconditionofthemortarspecimenwhenthecuringproductisapplied,andtheuniformityandquantityofapplicationofthecuringmembrane.1.1Thistestmethodcoverslaboratorydeterminationoftheefficiencyofliquidmembrane-formingcompoundsforcuringconcrete,asmeasuredbytheirabilitytoreducemoisturelossfrommortarspecimensduringtheearlyhardeningperiod.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Warning8212;Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:
【国际标准分类号】:91_100_30
【页数】:5P.;A4
【正文语种】:
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