Designation:D7497−21StandardPracticeforRecoveringResiduefromEmulsifiedAsphaltUsingLow-TemperatureEvaporativeTechnique1ThisstandardisissuedunderthefixeddesignationD7497;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThispracticecoversamethodforrecoveringtheresiduefromemulsifiedasphaltssuchasthosespecifiedinSpecifica-tionsD977andD2397/D2397Musingalow-temperatureevaporativetechniquethatissimilartopavementconditions.Therecoveredresiduecanbeusedforfurthertestingasrequired.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D977SpecificationforEmulsifiedAsphaltD2397/D2397MSpecificationforCationicEmulsifiedAs-phaltD3666SpecificationforMinimumRequirementsforAgen-ciesTestingandInspectingRoadandPavingMaterialsD6934TestMethodforResiduebyEvaporationofEmulsi-fiedAsphaltD6997TestMethodforDistillationofEmulsifiedAsphalt2.2OtherStandard:NFEN13074RecoveryofBinderfromBitumenEmulsionsbyEvaporation33.SignificanceandUse3.1Theproceduredescribedinthispracticeisuse...
