Designation:D5849/D5849M−21StandardTestMethodforEvaluatingResistanceofModifiedBituminousRoofingMembranetoCyclicFatigue(JointDisplacement)1ThisstandardisissuedunderthefixeddesignationD5849/D5849M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddeterminestheeffectofconstantcyclicdisplacementonpolymer-modifiedbituminousmembranespecimens.Inthistestmethod,arelativelylowtravelrateofcyclingisusedandthematerialistestedforaspecifiednumberofcyclesunderconditionsofincreasedamplitudeorlowertemperature.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:2D41/D41MSpecificationforAsphaltPrimerUsedinRoofing,Dampproofing,andWaterproofingD1079TerminologyRelatingtoRoofingandWaterproofingD5147/D5147MTestMethodsforSamplingandTestingModifiedBituminousSheetMaterial2.2CanadianGeneralStandardsBoardMethod:3CGSB37-GP-56MStandardforMembrane,Modified,Bituminous,Prefabricated,andReinforcedforRoofing3.Terminology3.1Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyD1079.4.Sum...
