Designation:C70−13AmericanAssociationStateHighwayandTransportationOfficialsStandardAASHTONo.:T142StandardTestMethodforSurfaceMoistureinFineAggregate1ThisstandardisissuedunderthefixeddesignationC70;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversfielddeterminationoftheamountofsurfacemoistureinfineaggregatebydisplacementinwater.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.2.ReferencedDocuments2.1ASTMStandards:2C128TestMethodforDensity,RelativeDensity(SpecificGravity),andAbsorptionofFineAggregateC566TestMethodforTotalEvaporableMoistureContentofAggregatebyDryingC670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterials3.SignificanceandUse3.1Thistestmethodisnotwidelyused.However,itisaconvenientprocedureforfieldorplantdeterminationofmoisturecontentoffineaggregateifspecificgravityvaluesareknownandifdryingfacilitiesarenotavailable.Itcanbeusedtoadjusttheaggregatemassformoisturecontentandtodeterminesurfacemoisturecontributiontomixingwaterinportlandcementconcrete.3.2Theaccuracyofthetestmethoddependsuponaccurateinformationonthebulkspecificgravityofthematerialinasaturatedsurface-drycondition.4.Apparatus4.1Balance,havingacapacityof2kgormoreandsensitiveto0.5gorless.4.2Flask—Asuitablecontainerorflask,preferablyofglassornoncorrosivemetal.Thecontainermaybeapycnometer,avolumetricflask,agraduatedvolumetricflask,orothersuitablemeasuringdevice.Thevolumeo...
