Designation:C1506−16bStandardTestMethodforWaterRetentionofHydraulicCement-BasedMortarsandPlasters1ThisstandardisissuedunderthefixeddesignationC1506;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodprovidesforthedeterminationofwaterretentionofhydrauliccement-basedmortarsandplasters.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Whenthistestmethodreferstocombined-unitstandards,theselectionofthemeasurementsystemsisattheuser’sdiscretion.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.(Warning—Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)22.ReferencedDocuments2.1ASTMStandards:3C109/C109MTestMethodforCompressiveStrengthofHydraulicCementMortars(Using2-in.or[50-mm]CubeSpecimens)C185TestMethodforAirContentofHydraulicCementMortarC230/C230MSpecificationforFlowTableforUseinTestsofHydraulicCementC305PracticeforMechanicalMixingofHydraulicCementPastesandMortarsofPlasticConsistencyC511SpecificationforMixingRooms,MoistCabinets,MoistRooms,andWaterStorageTanksUsedintheTestingofHydraulicCementsandConcretesC670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterialsC1437TestMethodforFlowofHydraulicCementMortar3.SummaryofTestMethod3.1Afterinitialmixingiscomplete,theflowofthemortarorplasterisdetermined.Themortarorplasteristhensubjectedtoacontrolledvacuumsuctionfor60s,afterwhichtheflowisagaindetermined.Thewaterretentionisthefinalflowdividedbytheinitialflowexpressedasapercentage.4.SignificanceandUse4.1Thistestmethodprovide...
