Designation:D4797−17StandardTestMethodsforGravimetricAnalysisofWhiteandYellowThermoplasticPavementMarking1ThisstandardisissuedunderthefixeddesignationD4797;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThesetestmethodscoverproceduresforthegravimetricanalysisofthebinderandhydrochloricAcid(HCL)insolubleparticlesinwhiteandyellowthermoplasticpavementmark-ings.TheHCLinsolubleparticlescanberetroreflectiveoptics,suchasglassbeadsorsomeothertypeofretroreflectiveoptic,ornon-retroreflectiveparticlessuchassilicasand,oracom-binationofanytwoormoreofthesematerials.1.2ThisstandarddoesnotaddressthephysicalseparationandtheindividualquantificationofeachcomponentwhenamixtureoftwoormoreHCLinsolublematerialsispresent.RatheritrequirestheusertovisuallyevaluatetheHCLinsolublematerial(obtainedfromfollowingthistestmethod)andreportthetypesofmaterialspresent.1.3Thisstandarddoesnotpurporttoaddressthetitaniumdioxideorleadchromatepigmentmeasurement(afterashing)whichisdetailedinTestMethodsD1394andD126.1.4Thisstandardwillattempttoaddresstheinterferenceoforganicpigmentswiththebinderresults.1.5Theanalyticalproceduresappearinthefollowingorder:SectionsPercentBinder10PercentRetroreflectiveOpticsorNon-RetroreflectiveParticles111.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.8Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-men...
