AS 1289.3.3.2-2009 Methods of testing soils for en

1AS1289.3.3.2—2009©StandardsAustraliaAustralianStandard®MethodsoftestingsoilsforengineeringpurposesMethod3.3.2:Soilclassificationtests—Calculationoftheconeplasticityindexofasoil1SCOPEThisStandardsetsoutamethodtocalculatetheplasticityindexofasoilasderivedfromtheconeliquidlimitandtheplasticlimitofasoil.2REFERENCEDDOCUMENTSThefollowingdocumentsarereferredtointhisStandard:AS1289Methodsoftestingsoilsforengineeringpurposes1289.3.2.1Method3.2.1:Soilclassificationtests—Determinationoftheplasticlimitofasoil—Standardmethod1289.3.9.1Method3.9.1:Soilclassificationtests—Determinationoftheconeliquidlimitofasoil1289.3.9.2Method3.9.2:Soilclassificationtests—Determinationoftheconeliquidlimit—One-pointmethod3PROCEDURETheprocedureshallbeasfollows:(a)DetermineconeliquidlimitinaccordancewithAS1289.3.9.1orAS1289.3.9.2.Iftheconeliquidlimitcannotbedeterminedthesoilisconsideredtobenon-plasticandtheplasticlimitneednotbedetermined.(b)Ifaconeliquidlimitvaluehasbeendetermined,performtheplasticlimitinaccordancewithAS1289.3.2.1ensuringthatthesamemethodofpreparationofthesoilfortheconeliquidlimitandplasticlimithasbeenfollowed.4CALCULATIONSUsingthereportedvaluesofwCLandwP,calculatetheconeplasticityindex(ICP)fromthefollowingequation:ICP=wCL−wPwhereICP=coneplasticityindex,inpercentwCL=coneliquidlimit,inpercentwP=plasticlimit,inpercentAS1289.3.3.2—2009AS1289.3.3.2—20092©StandardsAustralia(a)Theconeplasticityindex(ICP),inpercent,whenboththeliquidlimitandtheplasticlimitaredetermined.(b)Whentheconeliquidlimitortheplasticlimitcannotbedetermined,reporttheplasticityindexasNP(i.e.,non-plastic)togetherwiththeconeliquidlimitorplasticlimit,ifeitherhasbeendetermined.(c)Whentheplasticlimitisequaltoorgreaterthantheconeliquidlimit,reporttheconeplasticityindexas0(zero)andalsoreportboththeconeliquidlimitandtheplasticlimit.(d)Methodofpreparationandthehistoryofthesample.(e)Referencetothismethod,i.e.,AS1289.3.3.2.3AS1289.3.3.2—2009NOTESAS1289.3.3.2—20094ThisAustralianStandard®waspreparedbyCommitteeCE-009,TestingofSoilsforEngineeringPurposes.ItwasapprovedonbehalfoftheCouncilofStandardsAustraliaon9December2008andpublishedon6February2009.ThefollowingarerepresentedonCommitteeCE-009:AUSTROADSAssociationofGeotechnicalTestingAuthorities(Qld)AustralianBuildingCodesBoardAustralianChamberofCommerceandIndustryAustralianGeomechanicsSocietyAustralianStabilisationIndustryAssociationCementConcreteandAggregatesAustraliaDepartmentofPlanningandInfrastructure(NT)EngineeringandConstructionLaboratoriesAssociationEngineersAustraliaNationalAssociationofTestingAuthoritiesAustraliaUniversityofMelbourneUniversityofSydneyVictorianConstructionMaterialsLaboratoriesAssociationKeepingStandardsup-to-dateStandardsarelivingdocumentswhichreflectprogressinscience,technologyandsystems.Tomaintaintheircurrency,allStandardsareperiodicallyreviewed,andneweditionsarepublished.Betweeneditions,amendmentsmaybeissued.Standardsmayalsobewithdrawn.ItisimportantthatreadersassurethemselvestheyareusingacurrentStandard,whichshouldincludeanyamendmentswhichmayhavebeenpublishedsincetheStandardwaspurchased.Detailedin[e-mail],orwritetotheChiefExecutive,StandardsAustraliaLimited,GPOBox476,Sydney,NSW2001.OriginatedasAS1289.3.3.2—1995.Secondedition2009.ThisStandardwasissuedindraftformforcommentasDR06694.COPYRIGHT©StandardsAustraliaAllrightsarereserved.Nopartofthisworkmaybereproducedorcopiedinanyformorbyanymeans,electronicormechanical,includingphotocopying,withoutthewrittenpermissionofthepublisher.PublishedbyStandardsAustraliaLimitedGPOBox476,Sydney,NSW2001,AustraliaISBN0733790070PrintedinAustraliaThispagehasbeenleftintentionallyblank.