Designation:D7100−11StandardTestMethodforHydraulicConductivityCompatibilityTestingofSoilswithAqueousSolutions1ThisstandardisissuedunderthefixeddesignationD7100;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcovershydraulicconductivitycompat-ibilitytestingofsaturatedsoilsinthelaboratorywithaqueoussolutionsthatmayalterhydraulicconductivity(forexample,wasterelatedliquids)usingaflexible-wallpermeameter.Ahydraulicconductivitytestisconducteduntilbothhydraulicandchemicalequilibriumareachievedsuchthatpotentialinteractionsbetweenthesoilspecimenbeingpermeatedandtheaqueoussolutionaretakenintoconsiderationwithrespecttothemeasuredhydraulicconductivity.1.2Thistestmethodisapplicabletosoilswithhydraulicconductivitieslessthanapproximately1×10-8m/s.1.3Inadditiontohydraulicconductivity,intrinsicperme-abilitycanbedeterminedforasoilifthedensityandviscosityoftheaqueoussolutionareknownorcanbedetermined.1.4Thistestmethodcanbeusedforallspecimentypes,includingundisturbed,reconstituted,remolded,compacted,etc.specimens.1.5Aspecimenmaybesaturatedandpermeatedusingthreemethods.Method1isforsaturationwithwaterandpermeationwithaqueoussolution.Method2isforsaturationandperme-ationwithaqueoussolution.Method3isforsaturationwithwater,initialpermeationwithwater,andsubsequentperme-ationwithaqueoussolution.1.6Theamountofflowthroughaspecimeninresponsetoahydraulicgradientgeneratedacrossthespecimenismeasuredwithrespecttotime.Theamountandpropertiesofinfluentandeffluentliquidsaremonitoredduringthetest.1.7Thehydraulicconductivitywithanaqueoussolutionisdeterminedusingproceduressimilartodeterminationofhy-draulicconductivityofsaturatedsoilswithwaterasdescribedinTestMethodsD5084.Severaltestprocedurescanbeused,includingthefallingheadwater-risingtailwater,theconstant-head,thefallinghe...
