【英文标准名称】:StandardSpecificationforSteelStrand,UncoatedSeven-WireforPrestressedConcrete
【原文标准名称】:预应力混凝土的未涂覆七股钢丝绞绳标准规范
【标准号】:ASTMA416/A416M-2010
【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】:A01.05
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:预应力混凝土;7股钢绞线;钢丝;混凝土钢筋-规范;钢丝(混凝土);钢绞线-规范
【英文主题词】:prestressedconcrete;seven-wirestrand(tendon);steelwire;Concretereinforcement--specifications;Prestressedconcrete;Seven-wirestrand(tendon);Steelwire(prestressedconcrete);Steelwirestrand--specifications
【摘要】:1.1Thisspecificationcoverstwotypesandtwogradesofseven-wire,uncoatedsteelstrandforuseinpretensionedandpost-tensionedprestressedconcreteconstruction.Thetwotypesofstrandarelow-relaxationandstress-relieved(normal-relaxation).Low-relaxationstrandshallberegardedasthestandardtype.Stress-relieved(normal-relaxation)strandwillnotbefurnishedunlessspecificallyordered,orbyarrangementbetweenpurchaserandsupplier.Grade1725[250]andGrade1860[270]haveminimumultimatestrengthsof1725MPa[250ksi]and1860MPa[270ksi],respectively,basedonthenominalareaofthestrand.1.2Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedasstandard.Withinthetext,theinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.1.3ThesupplementaryrequirementsinS1shallbespecifiedfor15.2-mm[0.600-in.]diameteruncoatedseven-wiresteelstrandifneededforapplicationsinprestressedgroundanchors.
【中国标准分类号】:H49
【国际标准分类号】:77_140_15
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Carbonfibre-Determinationofdensity
【原文标准名称】:碳纤维.测定密度
【标准号】:BSISO10119-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-07-26
【实施或试行日期】:2002-07-26
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:纤维;测量规程;碳纤维;碳;密度;试验;定义;测量;测定
【英文主题词】:Carbon;Carbonfibres;Definition;Definitions;Density;Determination;Determinationprocedures;Fibres;Measurement;Tests
【摘要】:ThisInternationalStandardspecifiesthreemethodsforthedeterminationofthedensityofcarbonfibreyarn:—methodA:liquid-displacementmethod;—methodB:sink/floatmethod;—methodC:density-gradientcolumnmethod.MethodCisthereferencemethod.
【中国标准分类号】:Q52
【国际标准分类号】:59_100_20
【页数】:18P.;A4
【正文语种】:英语