Designation:C192/C192M−16aStandardPracticeforMakingandCuringConcreteTestSpecimensintheLaboratory1ThisstandardisissuedunderthefixeddesignationC192/C192M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thispracticecoversproceduresformakingandcuringtestspecimensofconcreteinthelaboratoryunderaccuratecontrolofmaterialsandtestconditionsusingconcretethatcanbeconsolidatedbyroddingorvibrationasdescribedherein.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.(Warning—Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoexposedskinandtissueuponprolongedexposure.2)2.ReferencedDocuments2.1ASTMStandards:3C70TestMethodforSurfaceMoistureinFineAggregateC125TerminologyRelatingtoConcreteandConcreteAg-gregatesC127TestMethodforRelativeDensity(SpecificGravity)andAbsorptionofCoarseAggregateC128TestMethodforRelativeDensity(SpecificGravity)andAbsorptionofFineAggregateC138/C138MTestMethodforDensity(UnitWeight),Yield,andAirContent(Gravimetric)ofConcreteC143/C143MTestMethodforSlumpofHydraulic-CementConcreteC172/C172MPracticeforSamplingFreshlyMixedCon-creteC173/C173MTestMethodforAirContentofFreshlyMixedConcretebytheVolumetricMethodC231/C231MTestMethodforAirContentofFreshlyMixedConcretebythePressureMethodC330/C330MSpecificationforLightw...
