Designation:D8292−20StandardTestMethodforPermanentDeformationBehaviorandRuttingResistanceofCompactedAsphaltMixintheModifiedLoadedWheelTrackerTestUtilizingControlledConfiningPressure1ThisstandardisissuedunderthefixeddesignationD8292;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesaprocedurefortestingpermanentdeformationbehaviorandruttingresistanceofcompactedasphaltmixturesusingamodifiedversionofaloadedwheeltrackerdevice2utilizingcontrolledconfiningpressure.Thetestspecimenistestedeitherdryormoistureconditioned.Alaboratoryrollercompactororitsequivalentisusedtopreparetestslabsof305mmby305mm[12in.by12in.]andthickness50mm,75mm,or100mm[2in.,3in.,or4in.]dependingonthenominalmaximumaggregatesize.Thethicknessofthespecimenmustbeatleasttwoandhalftimesthenominalmaximumaggregatesize.Alternatively,saw-cutslabspecimenswithdimensions305mmby305mm[12in.by12in.]andthickness50mmto100mm[2in.to4in.]maybesecuredfromthefield.1.2Units—ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnoncon-formancewiththestandard.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Sinceaprecisionestimateforthisstandardhasnotbeenfullydeveloped,thetestmethodistobeusedforresearchandinformationalpurposesonly.Therefore,thisstandardshouldnotbeusedforacceptanceorrejectionofamaterialforpurchasingpurposes.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priates...
