Designation:D4125/D4125M−21StandardTestMethodsforAsphaltContentofAsphaltMixturesbytheNuclearMethod1ThisstandardisissuedunderthefixeddesignationD4125/D4125M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscovertheproceduresfordetermin-ingtheasphaltcontentofsamplesofuncompactedasphaltmixtures(TestMethodA),andoflaboratorycompactedspecimensofasphaltmixtures(TestMethodB)byexaminingatestsamplewithanapparatusthatutilizesneutronthermal-izationtechniques.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.3AprecisionandbiasstatementforMethodBinthisstandardhasnotbeendevelopedatthistime.Therefore,MethodBshouldnotbeusedforacceptanceorrejectionofamaterialforpurchasingpurposes.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SeeSection6and8.4.2,8.5.6,andNote4forspecifichazards.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterialsD75/D75MPracticeforSamplingAggregatesD140/D140MPracticeforSamplingAsphaltMaterialsD979/D979MPracticeforSamplingBituminousPavingMixturesD1461TestMethodf...
