ASTM E2367-2005 用便携式反射比色计测量路面标记材料的夜间色度的标准试验方法

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【英文标准名称】:StandardTestMethodforMeasurementofNighttimeChromaticityofPavementMarkingMaterialsUsingaPortableRetroreflectionColorimeter
【原文标准名称】:用便携式反射比色计测量路面标记材料的夜间色度的标准试验方法
【标准号】:ASTME2367-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E12.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:交通管制;比色法;后反射;测量;夜间;光度测量法(光测量);色度;道路;路面;试验;便携的;计量学;标记材料
【英文主题词】:chromaticity;pavement;pavementmarkings;portableretroreflectioncolorimeters;reflection
【摘要】:ThechromaticityofthestripeisdeterminedbymeansofthetristimulusvaluesX,YandZfortheCIE1931(2x00B0;)standardobserverforCIEstandardilluminantA,whichareconvertedtothechromaticitycoordinates(x,y)andshownintheCIE1931(x,y)-chromaticitydiagram.RefertoPracticeE308.Underthesameconditionsofilluminationandviewing,thechromaticitycoordinates(x,y)representthenighttimecolorofpavementmarkingsinvehicleheadlampilluminationasseenbydriversofthevehicles.Thechromaticityofpavement(road)markingsmaychangewithtrafficwearandrequireperiodicmeasurementtoensurethatthechromaticityismaintainedwithinboundaries(seeSpecificationD6628forexamplesofcolorboundaries).AsspecifiedbyCENEN1436andTestMethodE1710,themeasurementgeometryoftheinstrumentisbasedonaviewingdistanceof30m,aheadlampmountingheightof0.65mandaneyeheightof1.2m.Itshallbetheresponsibilityoftheusertoemployaninstrumenthavingthespecifiedobservationandentranceangles.1.1Thistestmethodcoversmeasurementofthenighttimechromaticitycoordinates(x,y)ofhorizontalpavementmarkings,suchastrafficstripesandsurfacesymbols,usingaportableretroreflectioncolorimeterthatcanbeplacedontheroaddelineationtomeasurethechromaticityataprescribedgeometry.1.2Theentranceandobservationanglesoftheretrorecolorimeteraffectthereadings.AsspecifiedbytheEuropeanCommitteeforStandardization(CENEN1436),theentranceandobservationanglesshallbe88.76and1.05,respectively.1.3Thistestmethodisintendedtobeusedforfieldmeasurementofpavementmarkingsbutmaybeusedtomeasurethechromaticityofmaterialsonsamplepanelsbeforeplacingthemarkingmaterialinthefield.1.4TheportableretroreflectioncolorimetermayintegratemeasurementofthecoefficientofretroreflectedluminanceRLaccordingtoTestMethodE1710andthusbeanintegratedretroreflectometer/retroreflectioncolorimeter.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P66
【国际标准分类号】:17_180_20;93_080_30
【页数】:4P.;A4
【正文语种】: