Designation:C143/C143M−15aStandardTestMethodforSlumpofHydraulic-CementConcrete1ThisstandardisissuedunderthefixeddesignationC143/C143M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversdeterminationofslumpofhydraulic-cementconcrete,bothinthelaboratoryandinthefield.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.(Warning—Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.2)2.ReferencedDocuments2.1ASTMStandards:3C31/C31MPracticeforMakingandCuringConcreteTestSpecimensintheFieldC138/C138MTestMethodforDensity(UnitWeight),Yield,andAirContent(Gravimetric)ofConcreteC172PracticeforSamplingFreshlyMixedConcreteC173/C173MTestMethodforAirContentofFreshlyMixedConcretebytheVolumetricMethodC231TestMethodforAirContentofFreshlyMixedCon-cretebythePressureMethodC670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterialsD638TestMethodforTensilePropertiesofPlastics3.SummaryofTestMethod3.1Asampleoffreshlymixedconcreteispl...
