ASTM A 416/A 416M-2005 预应力混凝土用未涂覆的7股钢绞线的标准规范

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【英文标准名称】:StandardSpecificationforSteelStrand,UncoatedSeven-WireforPrestressedConcrete
【原文标准名称】:预应力混凝土用未涂覆的7股钢绞线的标准规范
【标准号】:ASTMA416/A416M-2005
【标准状态】:作废
【国别】:美国
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:结构钢;绞合线;预应力混凝土;钢;应力消除
【英文主题词】:Prestressedconcrete;Steels;Strands;Stressrelieving;Structuralsteels
【摘要】:
【中国标准分类号】:H44
【国际标准分类号】:77_140_15
【页数】:5P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforParticle-SizeDistribution(Gradation)ofSoilsUsingSieveAnalysis
【原文标准名称】:使用筛分法测定粒度分布(粒级作用)的标准试验方法
【标准号】:ASTMD6913-2004(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:gradation;grainsize;particlesize;particle-sizedistribution;sieveanalysis;sieving;Gradation;Particleanalysis--soil;Particlesizedistribution;Sieveanalysis--soil/rock
【摘要】:ThegradationofthesoilisusedforclassificationinaccordancewithPracticeD2487.Thegradation(particle-sizedistribution)curveisusedtocalculatethecoefficientofuniformityandthecoefficientofcurvature.Selectionandacceptanceoffillmaterialsareoftenbasedongradation.Forexample,highwayembankments,backfills,andearthendamsmayhavegradationrequirements.Thegradationofthesoiloftencontrolsthedesignandqualitycontrolofdrainagefilters,andground-waterdrainage.Selectionofoptionsfordynamiccompactionandgroutingisrelatedtogradationofthesoil.Thegradationofasoilisanindicatorofengineeringproperties.Hydraulicconductivity,compressibility,andshearstrengtharerelatedtothegradationofthesoil.However,engineeringbehaviorisdependentuponmanyfactors(suchaseffectivestress,stresshistory,mineraltype,structure,plasticity,andgeologicorigins)andcannotbebasedsolelyupongradation.Note18212;Thequalityoftheresultproducedbythesetestmethodsisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthesetestmethodsarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Soilsconsistofparticleswithvariousshapesandsizes.Thistestmethodisusedtoseparateparticlesintosizerangesandtodeterminequantitativelythemassofparticlesineachrange.Thesedataarecombinedtodeterminetheparticle-sizedistribution(gradation).Thistestmethodusesasquareopeningsievecriterionindeterminingthegradationofsoilbetweenthe3-in.(75-mm)andNo.200(75-x00B5;m)sieves.1.2Theterms,soilsandmaterial,areusedinterchangeablythroughoutthestandard.1.3Incaseswherethegradationofparticleslargerthan3in.(75mm)sieveisrequired,TestMethodD5519maybeused.1.4IncaseswherethegradationofparticlessmallerthanNo.200(75-x00B5;m)sieveisrequired,TestMethodD422maybeused.1.5Typically,ifthemaximumparticlesizeisequaltoorlessthan4.75mm(No.4sieve),thensingle-setsievingisapplicable.Furthermore,ifthemaximumparticlesizeisgreaterthan4.75mm(No.4sieve)andequaltoorlessthan9.5mm(3/8-insieve),theneithersingle-setsievingorcompositesievingisapplicable.Finally,ifthemaximumparticlesizeisequaltoorgreaterthan19.0mm(3/4-insieve),compositesievingisapplicable.Forspecialconditionssee10.3.1.6Twotestmethodsareprovidedinthisstandard.Themethodsdifferinthesignificantdigitsrecordedandthesizeofthespecimen(mass)required.Themethodtobeusedmaybespecifiedbytherequestingauthority;otherwiseMethodAshallbeperformed.1.6.1MethodA8212;Thepercentage(bymass)passingeachsievesizeisrecordedtothenearest1%.Thismethodmustbeusedwhenperformingcompositesieving.Forcasesofdisputes,MethodAistherefereemethod.1.6.2MethodB8212;Thepercentage(bymass)passingeachsievesizeisrecorded......
【中国标准分类号】:A42
【国际标准分类号】:13_080_20
【页数】:34P.;A4
【正文语种】:英语


基本信息
标准名称:非织造布厚度的测定
中标分类: 纺织 >> 纺织制品 >> 其他纺织制品
ICS分类: 纺织和皮革技术 >> 纺织产品
发布部门:中华人民共和国纺织工业部
发布日期:1991-06-07
实施日期:1992-01-01
首发日期:1900-01-01
作废日期:2011-08-15
提出单位:中华人民共和国纺织工业部
归口单位:纺织部标准化研究所
起草单位:纺织部标准化研究
起草人:毛力平、赵淑清、张勤如
出版社:中国标准出版社
出版日期:1992-01-01
页数:2页
适用范围

本标准规定了非织造布厚度的测定方法。
本标准适用于各类非织造布。

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所属分类: 纺织 纺织制品 其他纺织制品 纺织和皮革技术 纺织产品