Designation:C144−11AmericanAssociationStateHighwayandTransportationOfficialsStandardAASHTONo.:M45-70(1974)StandardSpecificationforAggregateforMasonryMortar1ThisstandardisissuedunderthefixeddesignationC144;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thisspecificationcoversaggregateforuseinmasonrymortar.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section7,ofthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C40TestMethodforOrganicImpuritiesinFineAggregatesforConcreteC87TestMethodforEffectofOrganicImpuritiesinFineAggregateonStrengthofMortarC88TestMethodforSoundnessofAggregatesbyUseofSodiumSulfateorMagnesiumSulfateC117TestMethodforMaterialsFinerthan75-µm(No.200)SieveinMineralAggregatesbyWashingC123TestMethodforLightweightParticlesinAggregateC128TestMethodforDensity,RelativeDensity(SpecificGravity),andAbsorptionofFineAggregateC136TestMethodforSieveAnalysisofFineandCoarseAggregatesC142TestMethodforClayLumpsandFriableParticlesinAggregatesC270SpecificationforMortarforUnitMasonryC404SpecificationforAggregatesforMasonryGroutD75PracticeforSamplingAggregates3.MaterialsandManufacture3.1Aggregateforuseinmasonrymortarshallconsistofnaturalsandormanufacturedsand.Manufacturedsandistheproductobtainedbycrushingstone,gravel,orair-cooledironblast-furnaceslagspeciallyprocessedtoensuresuitablegra-dation.NOTE1—Careshouldbetakentoensureas...
