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【英文标准名称】:StandardTestMethodforDeterminingtheIntegrityofNonreinforcedGeomembraneSeamsProducedUsingThermo-FusionMethods
【原文标准名称】:热溶法测定非增强土工薄膜接缝完整性搭标准试验方法
【标准号】:ASTMD6392-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D35.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Destructivetesting--soil/rock;FPP(flexiblepolypropylene);Geomembranes;HDPE(high-densitypolyethylene);Integritytesting;LLDPE(linearlow-densitypolyethylene);LMDPE(linearmediumdensitypolyethylene);Nonreinforcedgeomembraneseams;Poly(vin
【摘要】:Theuseofgeomembranesasbarriermaterialstorestrictliquidmigrationfromonelocationtoanotherinsoilandrockhascreatedaneedforastandardtestmethodtoevaluatethequalityofgeomembraneseamsproducedbythermo-fusionmethods.Inthecaseofgeomembranes,ithasbecomeevidentthatgeomembraneseamscanexhibitseparationinthefieldundercertainconditions.Althoughthisisanindextypetestmethodusedforqualityassuranceandqualitycontrolpurposes,itisalsointendedtoprovidethequalityassuranceengineerwithsufficientseampeelandsheardatatoevaluateseamquality.Recordingandreportingdata,suchasseparationthatoccursduringthepeeltestandelongationduringthesheartest,willallowthequalityassuranceengineertotakemeasuresnecessarytoensuretherepairofinferiorseamsduringfacilityconstruction,andtherefore,minimizethepotentialforseamseparationinservice.1.1Thistestmethoddescribesdestructivequalitycontrolandqualityassurancetestsusedtodeterminetheintegrityofgeomembraneseamsproducedbythermo-fusionmethods.Thistestmethodpresentstheproceduresusedfordeterminingthequalityofnonbituminousbondedseamssubjectedtobothpeelandsheartests.Thesetestproceduresareintendedfornonreinforcedgeomembranesonly.1.2Thetypesofthermalfieldseamingtechniquesusedtoconstructgeomembraneseamsincludethefollowing.1.2.1HotAir8212;Thistechniqueintroduceshigh-temperatureairorgasbetweentwogeomembranesurfacestofacilitatemelting.Pressureisappliedtothetoporbottomgeomembrane,forcingtogetherthetwosurfacestoformacontinuousbond.1.2.2HotWedge(orKnife)8212;Thistechniquemeltsthetwogeomembranesurfacestobeseamedbyrunningahotmetalwedgebetweenthem.Pressureisappliedtothetoporbottomgeomembrane,orboth,toformacontinuousbond.Someseamsofthiskindaremadewithdualbondtracksseparatedbyanonbondedgap.Theseseamsaresometimesreferredtoasdualhotwedgeseamsordouble-trackseams.1.2.3Extrusion8212;Thistechniqueencompassesextrudingmoltenresinbetweentwogeomembranesorattheedgeoftwooverlappedgeomembranestoeffectacontinuousbond.1.3Thetypesofmaterialscoveredbythistestmethodincludethefollowing.1.3.1VeryLowDensityPolyethylene(VLDPE).1.3.2LinearLowDensityPolyethylene(LLDPE).1.3.3VeryFlexiblePolyethylene(VFPE).1.3.4LinearMediumDensityPolyethylene(LMDPE).1.3.5HighDensityPolyethylene(HDPE).1.3.6PolyvinylChloride(PVC).1.3.7FlexiblePolypropylene(fPP).Note18212;Thepolyethyleneidentifierspresentedin1.3.1-1.3.5describethetypesofmaterialstypicallytestedusingthistestmethod.Theseareindustryacceptedtradedescriptionsandarenottechnicalmaterialclassificationsbaseduponmaterialdensity.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibility......
【中国标准分类号】:Q27
【国际标准分类号】:91_100_50
【页数】:6P.;A4
【正文语种】:英语