Designation:C1790−15StandardSpecificationforFlyAshFacingBrick1ThisstandardisissuedunderthefixeddesignationC1790;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversflyashbrickintendedforuseinmasonry,whicharemadefromflyash,water,andsuitablemineralaggregateswithorwithouttheinclusionofothermaterials,andwithouttheuseofportlandcement.Thisspecificationcoversunitsintendedforuseinmasonry,inbothstructuralandfacingapplications.1.2Unitscoveredunderthisspecificationincludeaflyashbinderthatundergoeshydraulic,pozzolanic,alkali-activated,orgeopolymerreactions,oranycombinationthereof.Thesechemicalreactions,inconjunctionwiththeothermaterialsintheunits,providethestrengthanddurabilitynecessarytomeettherequirementsofthisspecification.NOTE1—Thisspecificationaddressespropertiesofunitsformedusingflyash,aggregates,andotherallowedbinders.Althoughnotrequiredbythisstandard,usersmayrequestteststhatestablishassemblyperformancesuchasunit-mortarbondandfireresistance.1.3Thisspecificationreferencesnotesandfootnotes,whichprovideexplanatorymaterial.Thesenotesandfootnotes(ex-cludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:C33SpecificationforConcreteAggregatesC140TestMethodsforSamplingandTestingConcreteMasonryUnitsandRelatedUnitsC331SpecificationforLightweightAggregatesforConcreteMasonryUnitsC426TestMethodforLinearDryingShrinkageofConcreteMasonryU...
