Designation:D8188−18StandardTestMethodforDeterminationofDensityandRelativeDensityofAsphalt,Semi-SolidBituminousMaterials,andSoft-TarPitchbyUseofaDigitalDensityMeter(U-Tube)1ThisstandardisissuedunderthefixeddesignationD8188;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftherelativedensityanddensityofsemi-solidasphaltmaterials,asphaltbinders,asphaltcements,andsoft-tarpitchesbyuseofadigitaldensitymeter(U-tube).NOTE1—Alternatemethodsfordeterminingthedensityofsemi-solidandsolidasphaltmaterialsandasphaltbindersincludeTestMethodsD3289,D3142/D3142M,andD70.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.Nootherunitsofmeasurementareincludedinthisstandard,withtheexceptionoftemperaturemeasurements.UnitsprovidedindegreesFahrenheitareforreferencepur-posesonly.TemperaturesgivenindegreesCelsiusaretobeconsideredstandard.1.3Thebetween-laboratoryreproducibilityofthistestmethodisbeingdeterminedandwillbeavailableonorbeforeJune2021.Therefore,thisstandardshouldnotbeusedforacceptanceorrejectionofamaterialforpurchasingpurposes.1.4Thistestmethodshouldnotbeappliedtopetroleumdistillatesotherthanasphaltandasphaltbinders.Forthedeterminationofdensityofallotherpetroleumdistillatesandviscousoils,useTestMethodD4052orD5002,orISO12185.1.5Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesefootnotes(exclud-ingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.7Thisinternationalstandar...
