Designation:C452−15StandardTestMethodforPotentialExpansionofPortland-CementMortarsExposedtoSulfate1ThisstandardisissuedunderthefixeddesignationC452;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethod,whichisapplicableonlytoportlandcements,coversthedeterminationoftheexpansionofmortarbarsmadefromamixtureofportlandcementandgypsuminsuchproportionsthatthemixturehasasulfurtrioxide(SO3)contentof7.0mass%.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.ValuesinSIunits[orinch-poundunits]shallbeobtainedbymeasurementinSIunits[orinchpoundunits]orbyappropriateconversion,usingtheRulesforConversionandRoundinggiveninIEEE/ASTMSI10,ofmeasurementsmadeinotherunits(orSIunits).ValuesarestatedinonlySIunitswheninch-poundunitsarenotusedinpractice.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Warning—Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.22.ReferencedDocuments2.1ASTMStandards:3C109/C109MTestMethodforCompressiveStrengthofHydraulicCementMortars(Using2-in.or[50-mm]CubeSpecimens)C150SpecificationforPortlandCementC219TerminologyRelatingtoHydraulicCementC230/C230MSpecificationforFlowTableforUseinTestsofHydraulicCementC305PracticeforMechanicalMixingofHydraulicCementPastesandMortarsofPlasticConsistencyC471MTestMethodsforChemicalAnalysisofGypsumandGypsumProducts(Metric)C490PracticeforUseofApparatu...
