Designation:D1856−21StandardTestMethodforRecoveryofAsphaltfromSolutionbyAbsonMethod1ThisstandardisissuedunderthefixeddesignationD1856;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThistestmethodcoverstherecoverybytheAbsonmethodofasphaltfromasolutionfromapreviouslyconductedextraction.Theasphaltisrecoveredwithpropertiessubstan-tiallythesameasthoseitpossessedinthebituminousmixtureandinquantitiessufficientforfurthertesting.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterialsD2172/D2172MTestMethodsforQuantitativeExtractionofAsphaltBinderfromAsphaltMixturesD2939TestMethodsforEmulsifiedBitumensUsedasProtectiveCoatings(Withdrawn2012)3D4080SpecificationforTrichloroethylene,TechnicalandVapor-DegreasingGradeD6368SpecificationforVapor-DegreasingSolventsBasedonnormal-PropylBromideandTechnicalGradenormal-PropylBromideD8159TestMethodforAutomatedExtractionofAsphaltBinderfromAsphaltMixturesE1SpecificationforASTMLiquid-in-GlassThermometers3.SummaryofTestMethod3.1Thesolutionofsolventandasphaltfromanasphaltmixextractionisdistilledunderprescribedcond...
