Designation:D2974−20´1StandardTestMethodsforDeterminingtheWater(Moisture)Content,AshContent,andOrganicMaterialofPeatandOtherOrganicSoils1ThisstandardisissuedunderthefixeddesignationD2974;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Subsection4.1waseditoriallycorrectedinMarch2020.1.Scope*1.1Thesetestmethodscoverthemeasurementofwater(moisture)content,ashcontent,andorganicmaterialinpeatsandotherorganicsoils,suchasorganicclays,silts,andmucks.TestMethodD2216providesfordeterminingthewater(mois-ture)contentinmineralsoilsandrock.1.2Thisstandardhastwodifferentwaystodeterminethewatercontentofthespecimenpriortodeterminingtheashcontentbasedontheapplicationforwhichthepeatororganicsoilisbeingused.Forgeneralclassificationofpeat/organicsoilsnotbeingusedforfuel,thewatercontentisdeterminedusingovendrying.Forpeat/organicsoilsbeingusedasafuel,thewatercontentisdeterminedfirstbyairdryingfollowedbyovendrying.1.3TherearetwoMethods,AandB,fordeterminingtheashcontentandorganicmaterialofpeatororganicsoils.Forgeneralclassificationpurposes,MethodAisusedtodeterminethewatercontent,ashcontent,andorganicmaterial.Whenthepeatisbeingusedasafuel,MethodBisusedtodeterminethewatercontent,ashcontentandorganicmaterial.1.3.1MethodA—Theashcontentandorganicmaterialofpeatororganicsoilsisdeterminedbyignitingtheoven-driedspecimenasobtainedfromthewatercontentdeterminationinafurnaceat440640°C.Thismethodisusedforgeneralpurposesandshouldnotbeusedwhenthepeatororganicsoilsarebeingusedorevaluatedforuseasafuel.1.3.2MethodB—Theashcontentandorganicmaterialofpeatororganicsoilsisdeterminedbyignitingtheair-driedthenoven-driedspecimenobtainedfromthewatercontentdetermi-nationinafurnaceat750638°C.Thismethodisusedwhenthepeatororganicsoilisbeingusedasorevaluatedforuseasafuel.1.4Units—ThevaluesstatedinSIun...
