Designation:D7361−07(Reapproved2018)StandardTestMethodforAcceleratedCompressiveCreepofGeosyntheticMaterialsBasedonTime-TemperatureSuperpositionUsingtheSteppedIsothermalMethod1ThisstandardisissuedunderthefixeddesignationD7361;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversacceleratedtestingforcompres-sivecreeppropertiesusingthesteppedisothermalmethod(SIM).1.2ThetestmethodisfocusedongeosyntheticdrainagematerialssuchasHDPEgeonetspecimens.1.3TheSIMtestsarelaterallyunconfinedtestsbasedontime-temperaturesuperpositionprocedures.1.4Rampandhold(R+H)testsmaybecompletedinconjunctionwithSIMtests.TheyaredesignedtoprovideadditionalestimatesoftheinitialrapidcompressivecreepstrainlevelsappropriatefortheSIMresults.1.5Thismethodcanbeusedtoestablishthesustainedloadcompressivecreepcharacteristicsofageosyntheticthatdem-onstratesarelationshipbetweentime-dependentbehaviorandtemperature.Resultsofthismethodaretobeusedtoaugmentresultsofcompressivecreeptestsperformedat2061°Candmaynotbeusedasthesolebasisfordeterminationoflong-termcompressivecreepbehaviorofgeosyntheticmate-rial.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.8Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D16...
