Designation:D4843−88(Reapproved2016)StandardTestMethodforWettingandDryingTestofSolidWastes1ThisstandardisissuedunderthefixeddesignationD4843;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversproceduresfordeterminingmateriallossesproducedbyrepeatedwettinganddryingofsolidwastespecimens.Italsocoversthevisualobservationofthedisintegrationofsolidspecimens.1.2Thistestmethodintendsthatthematerialusedintheprocedurebephysically,chemically,andbiologicallyrepresen-tative;henceitdoesnotaddressproblemsasaresultoftheinhomogeneityofspecimens.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C305PracticeforMechanicalMixingofHydraulicCementPastesandMortarsofPlasticConsistencyD2216TestMethodsforLaboratoryDeterminationofWater(Moisture)ContentofSoilandRockbyMass3.SignificanceandUse3.1Thistestmethodisintendedfortheevaluationofthewettinganddryingresistanceofmonolithic,solid,solidified/stabilizedwastesunderthetestingconditionsofthistestmethod.3.2Thistestmethodmaybeusedforthecomparisonofwettinganddryingresistanceofwastes.3.3DatatabulatedinTable1,Table2,andTable3maybeusedtoobserveirregularitiescausedbyinhomogeneityofspecimens,orcomparisonofmassloss-cyclerelationsofdifferentwastes,orboth,aswellastomeasuremethod-relatedmasslossessuchasmatrixdissolution.4.Apparatus4.1DisposableMolds,44mminsidediameterby74mminlength.4.2BalanceorScale,withacapacityatleast50%greaterthanthemassofthespecimenandbeaker,andasensitivityof0.01g.4.3DryingO...
