【英文标准名称】:StandardTestMethodforTensileCreepRuptureofFiberReinforcedPolymerMatrixCompositeBars
【原文标准名称】:纤维强化聚合物基体复合条的拉伸蠕变断裂性能的标准试验方法
【标准号】:ASTMD7337/D7337M-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D30.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bars;compositebars;compositematerials;creeprupture;rebar;reinforcingbars;tensileproperties;tensilestrength
【摘要】:ThismethodforinvestigatingcreepruptureofFRPbarsisintendedforuseinlaboratorytestsinwhichtheprincipalvariableisthesizeortypeofFRPbars,magnitudeofappliedforce,anddurationofforceapplication.Unlikesteelreinforcingbarsorprestressingtendonssubjectedtosignificantsustainedstress,creepruptureofFRPbarsmaytakeplacebelowthestatictensilestrength.Therefore,thecreeprupturestrengthisanimportantfactorwhendeterminingacceptablestresslevelsinFRPbarsusedasreinforcementortendonsinconcretemembersdesignedtoresistsustainedloads.CreeprupturestrengthvariesaccordingtothetypeofFRPbarsused.ThistestmethodmeasuresthecreeprupturetimeofFRPbarsunderagivensetofcontrolledenvironmentalconditionsandforceratios.Thistestmethodisintendedtodeterminethecreeprupturedataformaterialspecifications,researchanddevelopment,qualityassurance,andstructuraldesignandanalysis.Theprimarytestresultisthemillion-hourcreeprupturecapacityofthespecimen.Creeppropertiesofreinforced,post-tensioned,orprestressedconcretestructuresareimportanttobeconsideredindesign.ForFRPbarsusedasreinforcingbarsortendons,thecreepruptureshallbemeasuredaccordingtothemethodgivenherein.1.1Thistestmethodoutlinesrequirementsfortensilecreeprupturetestingoffiberreinforcedpolymermatrix(FRP)compositebarscommonlyusedastensileelementsinreinforced,prestressed,orpost-tensionedconcrete.1.2DataobtainedfromthistestmethodareusedindesignofFRPreinforcementsundersustainedloading.Theprocedureforcalculatingtheone-millionhourcreep-rupturecapacityisprovidedin.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:91_100_40
【页数】:6P.;A4
【正文语种】: