Designation:C330/C330M−17aStandardSpecificationforLightweightAggregatesforStructuralConcrete1ThisstandardisissuedunderthefixeddesignationC330/C330M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoverslightweightaggregatesin-tendedforuseinstructuralconcreteinwhichprimeconsider-ationsarereducingthedensitywhilemaintainingthecompres-sivestrengthoftheconcrete.Procedurescoveredinthisspecificationarenotintendedforjobcontrolofconcrete.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.2.1Withregardtootherunitsofmeasure,thevaluesstatedininch-poundunitsaretoberegardedasstandard.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.NOTE1—Thisspecificationisregardedasadequatetoensuresatisfac-torylightweightaggregatesformostconcrete.Itisrecognizedthatitmaybeeithermoreorlessrestrictivethanneededforsomeconditionsandforspecialpurposes,suchasfireresistance,fill,andconcreteconstructions,theuseofwhichisbasedonloadtestsratherthanconventionaldesignprocedures.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C29/C29MTestMethodforBulkDensity(“UnitWeight”)andVoidsinAggregateC31/C31MPracticeforMakingandCuringConcreteTestSpecimensintheFi...
