ASTM A910/A910M-2005 预应力混凝土用未涂覆无焊缝2和3股钢丝绞绳标准规范

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【英文标准名称】:StandardSpecificationforUncoated,Weldless,2-and3-WireSteelStrandforPrestressedConcrete
【原文标准名称】:预应力混凝土用未涂覆无焊缝2和3股钢丝绞绳标准规范
【标准号】:ASTMA910/A910M-2005
【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】:
【英文主题词】:prestressedconcrete;steelwire;strand(tendons)
【摘要】:1.1Thisspecificationcoverstwotypesandtwogradesof2-and3-wire,uncoatedsteelstrandforuseinpretensionedandposttensionedprestressedconcreteconstruction.Thetwotypesofstrandarelow-relaxationandstress-relieved(normal-relaxation).Low-relaxationshallberegardedasthestandardtype.Stress-relieved(normal-relaxation)strandwillnotbefurnishedunlessspecificallyordered,orbyarrangementbetweenpurchaserandsupplier.Thetwogradesare1725(250)and1860(270).Grades250and270haveminimumtensilestrengthsof1725MPa(250ksi)and1860MPa(270ksi)respectively,basedonthenominalareaofthestrand.1.2Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedasthestandard.Withinthetext,theinch-poundunitsareshowninparentheses.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.
【中国标准分类号】:
【国际标准分类号】:77_140_15
【页数】:4P.;A4
【正文语种】: