【英文标准名称】:StandardTestMethodforConductingTime-to-Failure(Creep-Rupture)TestsofJointsFabricatedfromNonbituminousOrganicRoofMembraneMaterial
【原文标准名称】:非沥青质有机屋面薄膜材料接缝的蠕变断裂时间标准试验方法
【标准号】:ASTMD5405-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D08.18
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:紧固件;屋顶层;试验
【英文主题词】:creep;creep-rupture;joints;lap-shear;membranes;roofing;seams;testmethod;T-peel
【摘要】:Animportantfactoraffectingtheperformanceofjointsofnonbituminousmembranesistheirabilitytoremainbondedoverthemembranersquo;expectedservicelife.Time-to-failuretestsprovideameansofcharacterizingthebehaviorofjointsunderconstantloadovertime.Creepisasensitiveindexofrheologicalpropertiesthatdependonmaterial,load,temperature,andtime.Time-to-failuredatathatareobtainedoverarelativelyshorttimeperiodcanevaluateonefactoraffectingajointrsquo;abilitytowithstandstaticloadingoverarelativelylongtimeperiod.Time-to-failuredataforjointsofnonbituminousorganicroofmembranespecimenscanbeusedforthefollowing:(1)toprovideameasureoftheload-carryingabilityofthejointasafunctionoftimeatvariouslevelsofload,temperature,andrelativehumidity;(2)tocharacterizethejointwithregardtofactorsaffectingperformance,suchassurfacepreparationoftheadherend,solvent-basedadhesivethicknessandopentime,environmentduringadhesiveapplicationandcure,andtemperatureofthermalweldingprocesses;and(3)tocomparetheeffectsofdifferentbondingprocessesoradhesivebondingmaterialsonjointperformance.Whileitisconsideredthattheresultsobtainedbythislaboratorytestmayaffordameasureoftheperformanceofseamsinservice,providedthatload,temperature,andhumidityconditionsareknown,nodirectcorrelationhasbeenestablished.1.1Thistestmethodcoverslaboratorydeterminationofthetime-to-failure(creep-rupture)ofjointsfabricatedfromnonbituminousorganicroofmembranematerial.ThetestmethodcoversbothT-peelandlap-shearjointssubjectedtoconstanttensileloadundercontrolledenvironmentalconditions.Thejoints,madefromeitherunreinforcedorfabric-reinforcedmembranematerial,arepreparedinthelaboratoryorsampledfromroofsinservice.1.2Sheetmaterialsfromwhichthejointsarefabricatedincludevulcanizedrubbers,nonvulcanizedpolymericsheets,andthermoplastics.Thebondingmethodsforjointformationincludetheuseofliquid-basedadhesives,preformedtapes,andthermalandsolventweldprocesses.1.3ThevaluesstatedinS.I.unitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q17
【国际标准分类号】:91_100_50
【页数】:5P.;A4
【正文语种】:
基本信息
| 标准名称： | 乙烯-乙酸乙烯酯共聚物中乙酸乙烯酯的含量分析 热重法 |
| 中标分类： |
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| ICS分类： |
橡胶和塑料工业 >>
塑料 >>
热塑性塑料
|
| 发布日期： | 2007-03-28 |
| 实施日期： | 2007-04-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 5 |
适用范围
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所属分类： 橡胶和塑料工业 塑料 热塑性塑料