Designation:D2489/D2489M−08StandardPracticeforEstimatingDegreeofParticleCoatingofBituminous-AggregateMixtures1ThisstandardisissuedunderthefixeddesignationD2489/D2489M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeprovidesanestimateofthedegreeofparticlecoatinginabituminous-aggregatemixtureonthebasisofthepercentageofcoarseparticlesclassifiedasbeingcompletelycoated.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D8TerminologyRelatingtoMaterialsforRoadsandPave-mentsD979PracticeforSamplingBituminousPavingMixturesD995SpecificationforMixingPlantsforHot-Mixed,Hot-LaidBituminousPavingMixtures(Withdrawn2009)3D3665PracticeforRandomSamplingofConstructionMa-terialsD4215SpecificationforCold-Mixed,Cold-LaidBituminousPavingMixturesE11SpecificationforWovenWireTestSieveClothandTestSieves3.Terminology3.1Fordefinitionsofterms,seeTerminologyD8.3.2Fordescriptionsofmixingplantterms,seeMixingPlants,SpecificationD995.4.SignificanceandUse4.1Theprocedureinthispracticeforestimatingtheper-centageofcoatedparticlesaftervaryingmixingtimesisusedtoestablishtheleastmixingtimerequiredtoproducesatisfac-torycoatingforagivensetofconditions.Thisprocedurecanalsobeusedtosamplecoldmixturesfromstockpilestodeterminethatsatisfactorycoatinghasbeenretainedinthestockpile.4.2Thisprocedureisus...
