Designation:D4892−14StandardTestMethodforDensityofSolidPitch(HeliumPycnometerMethod)1ThisstandardisissuedunderthefixeddesignationD4892;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationofpitchdensitybyheliumpycnometer.Itisapplicableatarangeofroomtemperaturesof15to35°C.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D71TestMethodforRelativeDensityofSolidPitchandAsphalt(DisplacementMethod)D2320TestMethodforDensity(RelativeDensity)ofSolidPitch(PycnometerMethod)D2962PracticeforCalculatingVolume-TemperatureCor-rectionForCoal-TarPitchesD4296PracticeforSamplingPitchE11SpecificationforWovenWireTestSieveClothandTestSieves3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1density,asdeterminedbythistestmethod—themassperunitvolumeandshallbereportedasfollows:density,25°C,g/cm3~gramspercubiccentimeter!(1)4.SummaryofTestMethod4.1Thesampleispulverizedandscreenedtoagivenfraction,thenthevolumeofaweighedportionofthefractionisdeterminedusingaheliumpycnometer.5.SignificanceandUse5.1Thistestmethodisusefulincharacterizingpitchesasoneelementinestablishinguniformityofshipmentsandsourcesofsupply.Withthismethod,thedensityisdeterminedtotwodecimalplaces,whichissufficientformostapplications.Ifamoreprecisemeasurementisrequired(threedecimalplaces),useTestMethodsD2320orD71.6.Apparatus6.1HeliumPycnometer.36.2Balance,capableofweighi...
