【英文标准名称】:StandardSpecificationforChemicalAdmixturesforConcrete
【原文标准名称】:混凝土用化学添加剂的标准规格
【标准号】:ASTMC494/C494M-2010a
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:(Specification)
【标准水平】:()
【中文主题词】:加速;化学添加剂;混凝土;物理要求;阻滞;特定性能;测试;减水
【英文主题词】:accelerating;chemicaladmixtures;concrete;physicalrequirements;retarding;specificperformance;testing;waterreducing
【摘要】:1.1Thisspecificationcoversmaterialsforuseaschemicaladmixturestobeaddedtohydraulic-cementconcretemixturesinthefieldforthepurposeorpurposesindicatedfortheeighttypesasfollows:1.1.1TypeA8212;Water-reducingadmixtures,1.1.2TypeB8212;Retardingadmixtures,1.1.3TypeC8212;Acceleratingadmixtures,1.1.4TypeD8212;Water-reducingandretardingadmixtures,1.1.5TypeE8212;Water-reducingandacceleratingadmixtures,1.1.6TypeF8212;Water-reducing,highrangeadmixtures,1.1.7TypeG8212;Water-reducing,highrange,andretardingadmixtures,and1.1.8TypeS8212;Specificperformanceadmixtures.1.2Thisspecificationstipulatestestsofanadmixturewithsuitableconcretingmaterialsasdescribedin11.1-11.3orwithcement,pozzolan,aggregates,andanair-entrainingadmixtureproposedforspecificwork(11.4).Unlessspecifiedotherwisebythepurchaser,thetestsshallbemadeusingconcretingmaterialsasdescribedin11.1-11.3.Note18212;Itisrecommendedthat,wheneverpracticable,testsbemadeusingthecement,pozzolan,aggregates,air-entrainingadmixture,andthemixtureproportions,batchingsequence,andotherphysicalconditionsproposedforthespecificwork(11.4)becausethespecificeffectsproducedbychemicaladmixturesmayvarywiththepropertiesandproportionsoftheotheringredientsoftheconcrete.Forinstance,TypesFandGadmixturesmayexhibitmuchhigherwaterreductioninconcretemixtureshavinghighercementfactorsthanthatlistedin12.1.1.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:10P.;A4
【正文语种】:


【英文标准名称】:StandardSpecificationforSteelStudAssembliesforShearReinforcementofConcrete
【原文标准名称】:混凝土抗剪钢筋用钢螺柱组件的标准规格
【标准号】:ASTMA1044/A1044M-2005(2010)
【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】:A01.05
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:底板;钢筋混凝土;剪力钉;抗剪钢筋;薄板;接线柱总成
【英文主题词】:baserail;concretereinforcement;headedstuds;shearreinforcement;steel;studassemblies
【摘要】:1.1Thisspecificationcoverssteelstudassembliesforshearreinforcementofconcrete.Studassembliesconsistofeithersingle-headedstudsattachedtoasteelbaserailbywelding,ordouble-headedstudsmechanicallycrimpedintoasteelshape.Note18212;Theconfigurationofthestudsforstudassembliesismuchdifferentthantheconfigurationoftheheaded-typestudsprescribedinSection7,Figure7.1ofAWSD1.1/D1.1M.Ratiosofthecross-sectionalareasofthehead-to-shankoftheAWSD1.1/D1.1Mstudsrangefromabout2.5to4.Incontrast,thisspecificationrequirestheareaoftheheadofthestudsforstudassembliestobeatleast10timestheareaoftheshank.Thus,thestandardheaded-typestudsinSection7,Figure7.1ofAWSD1.1/D1.1Mdonotconformtotherequirementsofthisspecificationforuseasstudassembliesforshearreinforcement.1.2Thisspecificationisapplicableforordersineitherinch-poundunitsorinSIunits.1.3Thevaluesstatedeitherininch-poundorSIunitsaretoberegardedasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththisspecification.
【中国标准分类号】:J13
【国际标准分类号】:91_080_40
【页数】:5P.;A4
【正文语种】: