ASTM-C618-Standard-Specification-for-Coal-Fly-Ash-

Designation:C618−12aStandardSpecificationforCoalFlyAshandRaworCalcinedNaturalPozzolanforUseinConcrete1ThisstandardisissuedunderthefixeddesignationC618;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcoverscoalflyashandraworcalcinednaturalpozzolanforuseinconcretewherecementi-tiousorpozzolanicaction,orboth,isdesired,orwhereotherpropertiesnormallyattributedtoflyashorpozzolansmaybedesired,orwherebothobjectivesaretobeachieved.NOTE1—Finelydividedmaterialsmaytendtoreducetheentrainedaircontentofconcrete.Hence,ifaflyashornaturalpozzolanisaddedtoanyconcreteforwhichentrainmentofairisspecified,provisionshouldbemadetoensurethatthespecifiedaircontentismaintainedbyaircontenttestsandbyuseofadditionalair-entrainingadmixtureoruseofanair-entrainingadmixtureincombinationwithair-entraininghydrauliccement.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thetextofthisstandardreferencesnotesandfootnotes,whichprovideexplanatoryinformation.Thesenotesandfoot-notes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.2.ReferencedDocuments2.1ASTMStandards:2C125TerminologyRelatingtoConcreteandConcreteAg-gregatesC311TestMethodsforSamplingandTestingFlyAshorNaturalPozzolansforUseinPortland-CementConcrete3.Terminology3.1Definitions:3.1.1ThetermsusedinthisspecificationaredefinedinTerminologyC125.3.1.2flyash—thefinelydividedresiduethatresultsfromthecombustionofgroundorpowderedcoalandthatistransportedbyfluegasses.NOTE2—Thisdefinitionofflyashdoesnotinclude,amongotherthings,theresidueresultingfrom:(1)theburningofmunicipalgarbageoranyotherrefusewithcoal;(2)theinjectionoflimedirectlyintotheboilerforsulfurremoval;or(3)theburningofindustrialormunicipalgarbageinincineratorscommonlyknownas“incineratorash.”4.Classification4.1ClassN—Raworcalcinednaturalpozzolansthatcom-plywiththeapplicablerequirementsfortheclassasgivenherein,suchassomediatomaceousearths;opalinechertsandshales;tuffsandvolcanicashesorpumicites,calcinedoruncalcined;andvariousmaterialsrequiringcalcinationtoinducesatisfactoryproperties,suchassomeclaysandshales.4.2ClassF—Flyashthatmeetstheapplicablerequirementsforthisclassasgivenherein.Thisclassofflyashhaspozzolanicproperties.4.3ClassC—Flyashthatmeetstheapplicablerequirementsforthisclassasgivenherein.Thisclassofflyash,inadditiontohavingpozzolanicproperties,alsohassomecementitiousproperties.NOTE3—ClassFflyashistypicallyproducedfromburninganthraciteorbituminouscoal,butmayalsobeproducedfromsubbituminouscoalandfromlignite.ClassCflyashistypicallyproducedfromburningligniteorsubbituminouscoal,andmayalsobeproducedfromanthraciteorbituminouscoal.ClassCflyashestypicallyhavetotalcalciumcontents,expressedascalciumoxide(CaO),thatarehigherthanClassFflyashes.5.OrderingInformation5.1Thepurchasershallspecifyanysupplementaryoptionalphysicalrequirements.5.2Thepurchasershallindicatewhichprocedure,AorB,shallbeusedwhenspecifyingrequirementsforeffectivenessincontributiontosulfateresistanceunderTable3.6.ChemicalComposition6.1FlyashandnaturalpozzolansshallconformtotherequirementsastochemicalcompositionprescribedinTable1.NOTE4—Thechemicalcomponentdeterminationsandthelimitsplaced1ThisspecificationisunderthejurisdictionofASTMCommitteeC09onConcreteandConcreteAggregatesandisthedirectresponsibilityofSubcommitteeC09.24onSupplementaryCementitiousMaterials.CurrenteditionapprovedDec.15,2012.PublishedJanuary2013.Originallyapprovedin1968.Lastpreviouseditionapprovedin2012asC618–12.DOI:10.1520/C0618–12a.2ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.*ASummaryofChangessectionappearsattheendofthisstandardCopyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959.UnitedStates1CopyrightbyASTMInt'l(allrightsreserved);TueMay1903:50:51EDT2015Downloaded/printedbyTongjiUniversity(TongjiUniversity)pursuanttoLicenseAgreement.Nofurtherreproductionsauthorized.oneachdonotpredicttheperformanceoftheflyashornaturalpozzolanwithhydrauliccementinconcrete,butcollectivelyhelpdescribecompo-sitionanduniformityofthematerial.7.PhysicalProperties7.1FlyashandnaturalpozzolansshallconformtothephysicalrequirementsprescribedinTable2.SupplementaryoptionalphysicalrequirementsareshowninTable3.8.MethodsofSamplingandTesting8.1SampleandtesttheflyashornaturalpozzolaninaccordancewiththerequirementsofTestMethodsC311.8.2Usecementofthetypeproposedforuseintheworkand,ifavailable,fromthemillproposedasthesourceofthecement,inalltestsrequiringtheuseofhydrauliccement.9.StorageandInspection9.1Theflyashornaturalpozzolanshallbestoredinsuchamannerastopermiteasyaccessforproperinspectionand