Designation:D1461−11StandardTestMethodforMoistureorVolatileDistillatesinBituminousPavingMixtures1ThisstandardisissuedunderthefixeddesignationD1461;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversthedetermination,bydirectmeasurement,ofmoistureorvolatilefractionsofthebitumeninbituminouspavingmixtures.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D979PracticeforSamplingBituminousPavingMixturesD6997TestMethodforDistillationofEmulsifiedAsphalt3.SignificanceandUse3.1Thistestmethodisusedfordeterminingeithertheamountofmoistureortheamountofvolatilepetroleumdistillatesinbituminouspavingmixtures.4.Apparatus4.1MetalStill—Averticalcylindricalstill,similartothatusedinTestMethodsD6997,havingafacedflangeatthetoptowhichtheheadistightlyattachedbymeansofaclamp.Theheadshallbeofmetal,preferablyofcopperorbrass,andshallhavetubeopeningof25.4mm(1in)ofinsidediametertofacilitateattachmentofthespecifiedtrap/condenserassembly.4.2Condenser,ofthewater-cooledrefluxglass-tubetype,havingacondenserjacketnotlessthan400mm(153⁄4in.)longwithaninnertube9.5to12.7mm(3⁄8to1⁄2in.)inoutsidediameter.Theendofthecondenserinsertedinthetrapshallbegroundoffatanangleof30°fromtheverticalaxisofthecondenser.Formixtureswithveryvolatilesolvents,itmaybenecessarytosupplementthiswater-cooledcondenserwithasecondwater-cooledcondenserofapproximatelythesamedimensions.4.3Trap,ofwell-ann...
