Designation:C348−18StandardTestMethodforFlexuralStrengthofHydraulic-CementMortars1ThisstandardisissuedunderthefixeddesignationC348;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationoftheflexuralstrengthofhydraulic-cementmortars.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3ValuesinSIunitsshallbeobtainedbymeasurementinSIunitsorbyappropriateconversion,usingtheRulesforConversionandroundinggiveninStandardIEEE/ASTMSI10,ofmeasurementsmadeinotherunits.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Warning—Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.21.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:3C109/C109MTestMethodforCompressiveStrengthofHydraulicCementMortars(Using2-in.or[50-mm]CubeSpecimens)C125TerminologyRelatingtoConcreteandConcreteAg-gregatesC219TerminologyRelatingtoHydraulicCementC230/C230MSpecificationforFlowTableforUseinTestsofHydraulicCementC305PracticeforMechanicalMixingofHydraulicCementPastesandMortarsofPlasticConsistencyC349TestMethodforCompressiveStrengthofHydraulic-CementMortars(UsingPortionsofPrismsBrokeninFlexure)C670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterialsC778S...
