Designation:D854−14StandardTestMethodsforSpecificGravityofSoilSolidsbyWaterPycnometer1ThisstandardisissuedunderthefixeddesignationD854;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thesetestmethodscoverthedeterminationofthespecificgravityofsoilsolidsthatpassthe4.75-mm(No.4)sieve,bymeansofawaterpycnometer.Whenthesoilcontainsparticleslargerthanthe4.75-mmsieve,TestMethodC127shallbeusedforthesoilsolidsretainedonthe4.75-mmsieveandthesetestmethodsshallbeusedforthesoilsolidspassingthe4.75-mmsieve.1.1.1Soilsolidsforthesetestmethodsdonotincludesolidswhichcanbealteredbythesemethods,contaminatedwithasubstancethatprohibitstheuseofthesemethods,orarehighlyorganicsoilsolids,suchasfibrousmatterwhichfloatsinwater.NOTE1—TheuseofTestMethodD5550maybeusedtodeterminethespecificgravityofsoilsolidshavingsolidswhichreadilydissolveinwaterorfloatinwater,orwhereitisimpracticabletousewater.1.2Twomethodsforperformingthespecificgravityareprovided.Themethodtobeusedshallbespecifiedbytherequestingauthority,exceptwhentestingthetypesofsoilslistedin1.2.11.2.1MethodA—ProcedureforMoistSpecimens,describedin9.2.Thisprocedureisthepreferredmethod.Fororganicsoils;highlyplastic,finegrainedsoils;tropicalsoils;andsoilscontaininghalloysite,MethodAshallbeused.1.2.2MethodB—ProcedureforOven-DrySpecimens,de-scribedin9.3.1.3AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.3.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurpo...
