Designation:D2993–98StandardSpecificationforAcrylonitrile-ButadieneRubberizedTar1ThisstandardisissuedunderthefixeddesignationD2993;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversonegradeofrubberizedtarforuseinconstructionofrubberizedtarconcretepavement.2.ReferencedDocuments2.1ASTMStandards:D20TestMethodforDistillationofRoadTars2D70TestMethodforDensityofSemi-SolidBituminousMaterials(PyrometerMethod)2D95TestMethodforWaterinPetroleumProductsandBituminousMaterialsbyDistillation3D139TestMethodforFloatTestforBituminousMaterials2D140PracticeforSamplingBituminousMaterials2D872TestMethodforSulfonationIndexofRoadTars2D2042TestMethodforSolubilityofAsphaltMaterialsinTrichloroethylene2D2398TestMethodforSofteningPointofBitumeninEthyleneGlycol(Ring-and-Ball)4D2994TestMethodsforRubberizedTar23.SignificanceandUse3.1Thisspecificationgivestherequirementsforrubberizedtarsuitableforconstructingbituminousconcretepavement.4.Requirements4.1Therubberizedtarshallconsistofunvulcanizedacry-lonitrilebutadienerubber(NBR),solidorlatex,containingnecessaryadditivespreblendedwithhigh-temperature,residualcokeoventarconformingtotherequirementsprescribedinTable1.TherubberizedtarshallconformtotherequirementsprescribedinTable2.4.2Theblendingoperationofthetarwiththerubberandsubsequentstorageoftherubberizedtarblendshallbecarriedoutinequipmentfreefromcontaminationbyasphaltic,petro-leum,orothernoncokeoventarmaterials.Therubberizedtarshallbeheldinstorage(whichmaybeineitherthemanufac-turingequipmentorapprovedstoragetanks)foraminimumof20horuntiltestingiscompleted.5.Sampling5.1TakesamplesofrubberizedtarinaccordancewithMethodsD10.6.TestMethods6.1DeterminethepropertiesoftherubberizedtargiveninTable2inaccordancewithTestMethodD2994.1ThisspecificationisunderthejurisdictionofA...
