Designation:C51−11StandardTerminologyRelatingtoLimeandLimestone(asusedbytheIndustry)1ThisstandardisissuedunderthefixeddesignationC51;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisterminologyreferstothetermsrelatingtolimeandlimestoneproductsasusedbytheindustry.1.2Whereappropriate,thevarioustermsdefinedbelowshouldbeprefixedwithoneorotheroftheadjectives“high-calcium,”“magnesian,”or“dolomitic.”(Examples:dolomiticquicklime;high-calciumhydraulichydratedlime;magnesianordolomiticlimestone.)1.3Thecompositionofalimestoneshouldbegivenintermsofapercentageofthecarbonatespresent.Inlimestoneofinteresttothelimeindustry,itisusuallyassumedthatthematerialconsistsalmostentirelyofcarbonates.Wherethisassumptionisnotvalid,thepercentageofnoncarbonatemate-rialshouldbedetermined,andthecompositionexpressedintermsofthecarbonatematerialpresent.1.4Forspecificapplicationoflimeoralimestoneproduct,seetheappropriateASTMspecification.2.ReferencedDocuments2.1ASTMStandards:2C207SpecificationforHydratedLimeforMasonryPur-posesC270SpecificationforMortarforUnitMasonryC602SpecificationforAgriculturalLimingMaterialsC1707SpecificationforPozzolanicHydraulicLimeforStructuralPurposes3.Terminologyagriculturallime—eithergroundquicklimeorhydratedlimewhosecalciumandmagnesiumcontentiscapableofneu-tralizingsoilacidity.agriculturallimestone—groundorpulverizedlimestonewhosecalciumandmagnesiumcontentiscapableofneu-tralizingsoilacidity.DISCUSSION—Agriculturallimeisaverypowerfulneutralizingagent.Agriculturallimestone,oftenreferredtoas“aglime”isthepredominatematerialforsoilpHadjustment.SeeSpecificationC602.air-slakedlime—theproductcontainingvariousproportionsoftheoxides,hydroxides,andcarbonatesofcalciumandmagnesiumwhich...
