Designation:D7870/D7870M−20StandardPracticeforMoistureConditioningCompactedAsphaltMixtureSpecimensbyUsingHydrostaticPorePressure1ThisstandardisissuedunderthefixeddesignationD7870/D7870M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeincludesproceduresforpreparingcom-pactedasphaltmixturespecimens,exposingthespecimenstohydrostaticporepressureinsideanenclosedchamber,andguidanceontestingthespecimensfortheeffectofwateronthetensilestrengthorchangeinotherpropertiesoftheasphaltmixture,suchasdensity,modulus,etc.1.2Specimensconditionedaccordingtothispracticecanbetestedusingmethodsandtestproceduresreferencedinthisdocument,andthoseresultsmayprovideinformationastotheeffectofthemoistureconditioningofthispracticeonthemoisturesensitivityofthosemixtures.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2...
