Designation:C156−11StandardTestMethodforWaterLoss[fromaMortarSpecimen]ThroughLiquidMembrane-FormingCuringCompoundsforConcrete1ThisstandardisissuedunderthefixeddesignationC156;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thistestmethodcoverslaboratorydeterminationoftheefficiencyofliquidmembrane-formingcompoundsforcuringconcrete,asmeasuredbytheirabilitytoreducemoisturelossfrommortarspecimensduringtheearlyhardeningperiod.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinforma-tiononlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.(Warning—Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)22.ReferencedDocuments2.1ASTMStandards:3C87TestMethodforEffectofOrganicImpuritiesinFineAggregateonStrengthofMortarC150SpecificationforPortlandCementC230/C230MSpecificationforFlowTableforUseinTestsofHydraulicCementC305PracticeforMechanicalMixingofHydraulicCementPastesandMortarsofPlasticConsistencyC778SpecificationforSandD1475TestMethodForDensityofLiquidCoatings,Inks,andRelatedProductsD1653TestMethodsforWaterVaporTransmissionofOr-ganicCoatingFilmsD2369TestMethodforVolatileContentofCoatingsE178PracticeforDealingWithOutlyingObservations3.SignificanceandUse3.1Themoistureretainingabilityofaproductasdeter-minedbythistestmethodisusedtoassessthesuitabilityofmaterialsforcontributingtoanappropriatecuringenvironmentforconcrete.Thelaboratoryte...
