Designation:C127−15StandardTestMethodforRelativeDensity(SpecificGravity)andAbsorptionofCoarseAggregate1ThisstandardisissuedunderthefixeddesignationC127;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofrelativedensity(specificgravity)andtheabsorptionofcoarseaggre-gates.Therelativedensity(specificgravity),adimensionlessquantity,isexpressedasoven-dry(OD),saturated-surface-dry(SSD),orasapparentrelativedensity(apparentspecificgravity).TheODrelativedensityisdeterminedafterdryingtheaggregate.TheSSDrelativedensityandabsorptionaredeter-minedaftersoakingtheaggregateinwaterforaprescribedduration.1.2ThistestmethodisnotintendedtobeusedwithlightweightaggregatesthatcomplywithSpecificationC332GroupIaggregates.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thetextofthistestmethodreferencesnotesandfootnotesthatprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthistestmethod.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C29/C29MTestMethodforBulkDensity(“UnitWeight”)andVoidsinAggregateC125TerminologyRelatingtoConcreteandConcreteAg-gregatesC128TestMethodforRelativeDensity(SpecificGravity)andAbsorptionofFineAggregateC136TestMethodforSieveAnalysisofFineandCoarseAggregatesC330SpecificationforLightweightAggregatesforStruc-turalConcreteC332SpecificationforLightweightAggregatesforInsulat-ingConcreteC566TestM...
