Designation:D4355/D4355M−21StandardTestMethodforDeteriorationofGeotextilesbyExposuretoLight,Moisture,andHeatinaXenonArc-TypeApparatus1ThisstandardisissuedunderthefixeddesignationD4355/D4355M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofthedete-riorationintensilestrengthofgeotextilesbyexposuretoxenonarcradiation,moisture,andheat.1.2Thelightandwaterexposureapparatusemploysaxenonarclightsource.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D123TerminologyRelatingtoTextilesD1898PracticeforSamplingofPlastics(Withdrawn1998)3D4439TerminologyforGeosyntheticsD5035TestMethodforBreakingForceandElongationofTextileFabrics(StripMethod)D6637/D6637MTestMethodforDeterminingTensileProp-ertiesofGeogridsbytheSingleorMulti-RibTensileMethodD6818TestMethodforTensilePropertiesofRolledErosionControlProductsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisiono...
