Designation:D4798/D4798M−11(Reapproved2021)StandardPracticeforAcceleratedWeatheringTestConditionsandProceduresforBituminousMaterials(Xenon-ArcMethod)1ThisstandardisissuedunderthefixeddesignationD4798/D4798M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverstestconditionsandproceduresforxenon-arcexposuresaccordingtoPracticesG151andG155forbituminousroofingandwaterproofingmaterials.(SeeTermi-nologyG113.)1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1669/D1669MPracticeforPreparationofTestPanelsforAcceleratedandOutdoorWeatheringofBituminousCoat-ingsD1670/D1670MTestMethodforFailureEndPointinAc-celeratedandOutdoorWeatheringofBituminousMateri-alsG113TerminologyRelatingtoNaturalandArtificialWeath-eringTestsofNonmetallicMaterialsG141GuideforAddressingVariabilityinExposureTestingofNonmetallicMaterialsG147PracticeforConditioningandHandlingofNonmetal-licMaterialsforNaturalandArtificialWeatheringTestsG151PracticeforExposingNonmetallicMaterialsinAccel-eratedTe...
