Designation:C1138–97StandardTestMethodforAbrasionResistanceofConcrete(UnderwaterMethod)1ThisstandardisissuedunderthefixeddesignationC1138;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversaprocedurefordeterminingtherelativeresistanceofconcrete(includingconcreteoverlaysandimpregnatedconcrete)toabrasionunderwater(seeNote1).Thisproceduresimulatestheabrasiveactionofwaterborneparticles(silt,sand,gravel,andothersolids).NOTE1—Otherproceduresareavailableformeasuringabrasionresis-tanceofconcretesurfacesnotunderwater.TheseincludeTestMethodsC418,C779,andC944.1.2Thevaluesstatedinacceptablemetricunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:C42TestMethodforObtainingandTestingDrilledCoresandSawedBeamsofConcrete2C418TestMethodforAbrasionResistanceofConcretebySandblasting2C642TestMethodforSpecificGravity,Absorption,andVoidsinHardenedConcrete2C670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterials2C779TestMethodforAbrasionResistanceofHorizontalConcreteSurfaces2C944TestMethodforAbrasionResistanceofConcreteorMortarSurfacesbytheRotatingCutterMethod2E18TestMethodsforRockwellHardnessandRockwellSuperficialHardnessofMetallicMaterials33.SignificanceandUse3.1Thistestmethodisintendedtoqualitativelysimulatethebehaviorofswirlingwatercontainingsuspendedandtrans-portedsolidobjectsthatproduceabrasionofconcreteandcausepotholesandrelatedeffects.3.2Thistestmethodshouldprovidearelativeevaluationoftheresistanceofconcretetosuchaction.3.3Theresultsareexpectedtobeusefulinse...
