Designation:D2573/D2573M−15StandardTestMethodforFieldVaneShearTestinSaturatedFine-GrainedSoils1ThisstandardisissuedunderthefixeddesignationD2573/D2573M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthefieldvanetestinsaturatedclayandsiltsoilsfordeterminationofundrainedshearstrength.Knowledgeofthenatureofthesoilinwhicheachvanetestistobemadeisnecessaryforassessmentoftheapplicabilityandinterpretationofthetest.Thetestisnotapplicableforsandysoilsornon-plasticsilts,whichmayallowdrainageduringthetest.1.2Thistestmethodaddressestestingonlandandfortestingindrillholesorbyself-drillingorcontinuouspushmethodsfromthegroundsurface.Thismethoddoesnotaddressspecificallymarinetestingwherespecialtestrequire-mentsorvariationsinequipmentmayberequired.TheuserisreferredtoASTMSTP1014foradditionalinformationonin-placevanesheartestingusedinmarineexploration.21.3Thismethodisoftenusedinconjunctionwithfluidrotarydrilling(D5783),hollow-stemaugers(D6151),orconepenetrationtesting(D5778).Someapparatuseshavethevaneretractedinaprotectiveshoeforadvancementandincrementaltesting.Sampling,suchaswiththinwalltubes(D1587)isoftencombinedwithvanetesting.Subsurfacegeotechnicalexplora-tionsarereportedinaccordancewithPractice(D5434).1.4UndrainedshearstrengthandsensitivityofcohesivesoilscanalsobemeasuredinLaboratoryVaneTest(D4648).1.5Units—ThevaluesstatedineitherSIunitsorinch-poundunits[presentedinbrackets]aretoberegardedsepa-ratelyasstandard.Thevaluesineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.ReportingoftestresultsinunitsotherthanSIshallnotberegardedasnoncon-formancewiththistestme...
