Designation:D4943−08StandardTestMethodforShrinkageFactorsofSoilsbytheWaxMethod1ThisstandardisissuedunderthefixeddesignationD4943;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoverstheprocedurefordeterminingtheshrinkagelimitofsoils.1.2Thedataobtainedusingthistestmethodmayalsobeusedtocalculateshrinkageratio,volumetricshrinkage,andlinearshrinkage.1.3Thistestmethodisapplicableonlyforcohesivesoils.1.4SincethistestmethodisperformedonlyonthatportionofasoilwhichpassestheNo.40(425-µm)sieve,therelativeconsistencyofthisportionofthesoiltothepropertiesofthesampleasawholemustbeconsideredwhenusingtheseprocedurestoevaluatethepropertiesofasoil.1.5TheshrinkagelimitalongwiththeliquidlimitandplasticlimitofsoilsareoftencollectivelyreferredtoastheAtterberglimitsinrecognitionoftheirformationbySwedishsoilscientist,A.Atterberg.Theselimitsdistinguishthebound-ariesoftheseveralconsistencystatesofcohesivesoils.1.6AllrecordedandcalculatedvaluesshallconformtotheguideforsignificantdigitsandroundingestablishedinPracticeD6026.1.6.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsider-ationsfortheuser’sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.7ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.It...
