Designation:C586−11StandardTestMethodforPotentialAlkaliReactivityofCarbonateRocksasConcreteAggregates(Rock-CylinderMethod)1ThisstandardisissuedunderthefixeddesignationC586;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationoftheexpan-sionofaspecimenofcarbonaterockwhileimmersedinasolutionofsodiumhydroxide(NaOH)atroomtemperature.Thelengthchangesoccurringduringsuchimmersionindicatethegenerallevelofreactivityoftherockandwhethertestsshouldbemadetodeterminetheeffectofaggregatepreparedfromtherockuponthevolumechangeinconcrete.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C294DescriptiveNomenclatureforConstituentsofCon-creteAggregatesC295GuideforPetrographicExaminationofAggregatesforConcreteC1105TestMethodforLengthChangeofConcreteDuetoAlkali-CarbonateRockReactionD75PracticeforSamplingAggregatesD1248SpecificationforPolyethylenePlasticsExtrusionMaterialsforWireandCableE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethods3.Terminology3.1Fordefinitionsoftermsrelatingtoaggregatesusedinthistestmethod,refertoDescriptiveNomenclatureC294.4.SummaryofTestMethod4.1SmallrockcylindersareimmersedinasolutionofNaOHexceptwhenremovedfordeterminationoflengthchange.Thelengthchangeofeachspecimenisperiodicallydetermined.5.SignificanceandUse5.1Thistestmethodisintendedtogivearelativelyrapidindicationofthepotentialexpansivereactivityofce...
