Designation:D4887/D4887M−11(Reapproved2021)´1StandardPracticeforPreparationofViscosityBlendsforHotRecycledAsphaltMaterials1ThisstandardisissuedunderthefixeddesignationD4887/D4887M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Section1wasupdatededitoriallyinDecember2021.1.Scope1.1Thispracticecoverstheprocedureforpreparationofhotrecycledbituminousblendsfortestinginthelaboratory.Theprocedureinvolvesaniterativetrialblendprocessfollowedbythepreparationofbatchblends.1.2Thebatchblendscanbeusedforextensiveevaluationsuchasviscosity,penetration,ductility,agingproperties(suchasRollingThinFilmOvenorThin-FilmOventests,orboth(RTFO/TFO)),compositionanalysis,solubilityanalysis,andotheruser-selectedtests.1.3Thispracticeassumesthatarepresentativereclaimedasphaltpavement(RAP)sampleisextractedandtheagedbinderrecoveredusingTestMethodsD2172/D2172MandTestMethodD1856(thispracticemaybemodifiedbyusingarotaryevaporatorwhichisextensivelyevaluatedintheminutesofthe18thPacificCoastConferenceonAsphaltSpecifications2)oranyotheracceptabletestmethod.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.5Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdev...
