ASTM C403/C403M-2008 由抗穿透性测定混凝土混合料凝固时间的标准试验方法
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【英文标准名称】:StandardTestMethodforTimeofSettingofConcreteMixturesbyPenetrationResistance
【原文标准名称】:由抗穿透性测定混凝土混合料凝固时间的标准试验方法
【标准号】:ASTMC403/C403M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C09.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:concrete;mortar;penetrationresistance;timeoffinalsetting;timeofinitialsetting;Concrete;Mortar;Penetration--cement/concrete;Settingtime
【摘要】:Sincethesettingofconcreteisagradualprocess,anydefinitionoftimeofsettingmustnecessarilybearbitrary.Inthistestmethod,thetimesrequiredforthemortartoreachspecifiedvaluesofresistancetopenetrationareusedtodefinetimesofsetting.Thistestmethodcanbeusedtodeterminetheeffectsofvariables,suchaswatercontent;brand,typeandamountofcementitiousmaterial;oradmixtures,uponthetimeofsettingofconcrete.Thistestmethodmayalsobeusedtodeterminecompliancewithspecifiedtime-of-settingrequirements.Thistestmethodmayalsobeappliedtopreparedmortarsandgrouts.However,whenthesettingtimeofconcreteisdesired,thetestshallbeperformedonmortarsievedfromtheconcretemixtureandnotonapreparedmortarintendedtosimulatethemortarfractionoftheconcrete;ithasbeenshownthattheinitialandfinalsettingtimesmaybeincreasedwhenusingthepreparedmortar.1.1Thistestmethodcoversthedeterminationofthetimeofsettingofconcrete,withslumpgreaterthanzero,bymeansofpenetrationresistancemeasurementsonmortarsievedfromtheconcretemixture.1.2Thistestmethodissuitableforuseonlywhentestsofthemortarfractionwillprovidetheinformationrequired.1.3Thistestmethodmayalsobeappliedtopreparedmortarsandgrouts.1.4Thistestmethodisapplicableundercontrolledlaboratoryconditions,aswellasunderfieldconditions.1.5ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:7P.;A4
【正文语种】:英语
【原文标准名称】:由抗穿透性测定混凝土混合料凝固时间的标准试验方法
【标准号】:ASTMC403/C403M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C09.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:concrete;mortar;penetrationresistance;timeoffinalsetting;timeofinitialsetting;Concrete;Mortar;Penetration--cement/concrete;Settingtime
【摘要】:Sincethesettingofconcreteisagradualprocess,anydefinitionoftimeofsettingmustnecessarilybearbitrary.Inthistestmethod,thetimesrequiredforthemortartoreachspecifiedvaluesofresistancetopenetrationareusedtodefinetimesofsetting.Thistestmethodcanbeusedtodeterminetheeffectsofvariables,suchaswatercontent;brand,typeandamountofcementitiousmaterial;oradmixtures,uponthetimeofsettingofconcrete.Thistestmethodmayalsobeusedtodeterminecompliancewithspecifiedtime-of-settingrequirements.Thistestmethodmayalsobeappliedtopreparedmortarsandgrouts.However,whenthesettingtimeofconcreteisdesired,thetestshallbeperformedonmortarsievedfromtheconcretemixtureandnotonapreparedmortarintendedtosimulatethemortarfractionoftheconcrete;ithasbeenshownthattheinitialandfinalsettingtimesmaybeincreasedwhenusingthepreparedmortar.1.1Thistestmethodcoversthedeterminationofthetimeofsettingofconcrete,withslumpgreaterthanzero,bymeansofpenetrationresistancemeasurementsonmortarsievedfromtheconcretemixture.1.2Thistestmethodissuitableforuseonlywhentestsofthemortarfractionwillprovidetheinformationrequired.1.3Thistestmethodmayalsobeappliedtopreparedmortarsandgrouts.1.4Thistestmethodisapplicableundercontrolledlaboratoryconditions,aswellasunderfieldconditions.1.5ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:7P.;A4
【正文语种】:英语
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