Designation:D1140−14StandardTestMethodsforDeterminingtheAmountofMaterialFinerthan75-µm(No.200)SieveinSoilsbyWashing1ThisstandardisissuedunderthefixeddesignationD1140;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thesetestmethodscoverthedeterminationoftheamountofmaterialfinerthana75-µm(No.200)sievebywashingofmaterialwithamaximumparticlesizeof75mm(3in.).1.2Themethodsusedinthisstandardrelyontheuseofwateroradispersanttoseparateandremovematerialsfinerthana75-µm(No.200)sieve.Duringtheseprocessessolublesubstances,suchassaltsandotherminerals,mayalsoberemoved.Itisnotwithinthescopeofthisstandardtodifferentiatebetweentheremovaloffineparticlesandsolublesubstances.Itisrecommendedthatmaterialscontainingsig-nificantamountsofsolublesubstancesbetestedusingothermethodsofseparation.1.3Twomethodsfordeterminingtheamountofmaterialfinerthanthe75-µm(No.200)sieveareprovided.Themethodtobeusedshallbespecifiedbytherequestingauthority.Ifnomethodisspecified,thechoiceshouldbebasedupontheguidancegivenin5.2,5.3,and5.4.1.3.1MethodA—Testspecimenisdispersedbysoakinginwaterpriortowashsieving.1.3.2MethodB—Testspecimenisdispersedbysoakinginadispersingsolutionpriortowashsieving.1.4Units—ThevaluesstatedinSIunitsaretoberegardedasstandard.Exceptthesievedesignationsaretypicallyiden-tifiedusingthe“alternative”systeminaccordancewithSpeci-ficationE11,suchas3inchandNo.200,insteadofthe“standard”of75-mmand75-µm,respectively.ReportingoftestresultsinunitsotherthanSIshallnotberegardedasnonconformancewiththistestmethod.Theuseofbalancesorscalesrecordingpoundsofmass(lbm)shallnotberegardedasnonconformancewiththisstandard.1.5Allobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestabli...
