ASTM D4798/D4798M-2009 沥青材料的加速老化试验条件和程序的标准规程(氙弧法)
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【英文标准名称】:StandardPracticeforAcceleratedWeatheringTestConditionsandProceduresforBituminousMaterials(Xenon-ArcMethod)
【原文标准名称】:沥青材料的加速老化试验条件和程序的标准规程(氙弧法)
【标准号】:ASTMD4798/D4798M-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:D08.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:加速老化
【英文主题词】:acceleratedweathering;bituminousmaterials;degradation;exposure;lightexposure;roofing;ultraviolet;waterproofing;xenon-arc;Acceleratedaging/testing--buildingmaterials;Bituminousroofingmaterials;Lightexposure;Sprayapplications/testing;W
【摘要】:Itisnotpossibletoestablishaprecisecorrelationbetweenacceleratedandnaturalweatheringbecause(1)therearegeographicalclimaticvariations,localweathervariations,andvariationsinlocalpollutants,and(2)therelationbetweenacceleratedandnaturalweatheringismaterialdependentwithdifferencesinaccelerationfactorsbetweenmaterialsaswellasfordifferentformulationsofthesamematerial.Thisweatheringapparatusandprocedureareusedforcomparingtheweatheringcharacteristicsofbituminousmaterialsagainstacontrolmaterialforwhichtheoutdoorweatheringcharacteristicsareknown.GuideG141providesguidanceregardingthisissue.Note18212;Thispracticecanbeusedforotherthanbituminousmaterials,butthesignificanceandusehavenotbeenevaluated.1.1Thispracticecoverstestconditionsandproceduresforxenon-arcexposuresaccordingtoPracticesG151andG155forbituminousroofingandwaterproofingmaterialsthathaveaminimumsofteningpointofapproximately95x00B0;C[200x00B0;F]asdeterminedbyTestMethodD36.(AlsoseeTerminologyG113.)1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:75_140;91_100_50;93_080_20
【页数】:3P.;A4
【正文语种】:
【原文标准名称】:沥青材料的加速老化试验条件和程序的标准规程(氙弧法)
【标准号】:ASTMD4798/D4798M-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:D08.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:加速老化
【英文主题词】:acceleratedweathering;bituminousmaterials;degradation;exposure;lightexposure;roofing;ultraviolet;waterproofing;xenon-arc;Acceleratedaging/testing--buildingmaterials;Bituminousroofingmaterials;Lightexposure;Sprayapplications/testing;W
【摘要】:Itisnotpossibletoestablishaprecisecorrelationbetweenacceleratedandnaturalweatheringbecause(1)therearegeographicalclimaticvariations,localweathervariations,andvariationsinlocalpollutants,and(2)therelationbetweenacceleratedandnaturalweatheringismaterialdependentwithdifferencesinaccelerationfactorsbetweenmaterialsaswellasfordifferentformulationsofthesamematerial.Thisweatheringapparatusandprocedureareusedforcomparingtheweatheringcharacteristicsofbituminousmaterialsagainstacontrolmaterialforwhichtheoutdoorweatheringcharacteristicsareknown.GuideG141providesguidanceregardingthisissue.Note18212;Thispracticecanbeusedforotherthanbituminousmaterials,butthesignificanceandusehavenotbeenevaluated.1.1Thispracticecoverstestconditionsandproceduresforxenon-arcexposuresaccordingtoPracticesG151andG155forbituminousroofingandwaterproofingmaterialsthathaveaminimumsofteningpointofapproximately95x00B0;C[200x00B0;F]asdeterminedbyTestMethodD36.(AlsoseeTerminologyG113.)1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:75_140;91_100_50;93_080_20
【页数】:3P.;A4
【正文语种】:
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