【英文标准名称】:StandardTestMethodforMeasuringPavementTextureDrainageUsinganOutflowMeter
【原文标准名称】:用出流量计测量铺面结构排水量的标准试验方法
【标准号】:ASTME2380/E2380M-2009
【标准状态】:现行
【国别】:美国
【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】:E17.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Drainageefficiency;Outflowmeter;Pavementsurfaces;Pavementtexture
【摘要】:Thistestmethodissuitableasafieldtesttoevaluatethesurfacedrainage,andinsomecases,theinternaldrainageofthesurfacecourseofapavement.Whenusedwithothertests,theoutflowtimemaybeusedtoevaluatethetextureproducedbyanasphaltconcretemix,afinishingmethodusedonPortlandcementconcretepavement,andrefinishingoperationsonanoldpavementsurface.TestresultswillcorrelatewithothermethodssuchastheCTMeter(TestMethodE2157),MPD(PracticeE1845),andMTD(TestMethodE965).Note18212;ThereciprocaloftheoutflowtimeishighlycorrelatedwiththeMPDexceptwhenthesurfaceishighlyporoussincetheMPDisameasureofthesurfacetextureanddoesnotaccountforthewaterflowingthroughthesurfacepores.Theoutflowtimesmeasuredbythismethodareanindicationonly,andarenotmeanttoprovideacompleteassessmentofthepavementsurfacefriction,orwetweathersafetycharacteristics.Thistestmethoddoesnotnecessarilycorrelateoragreewithothermethodsofmeasuringpavementsurfacecharacteristics.Itisuptotheoperatortodeterminethecorrelationofeachmethodconsidered.1.1Thistestmethodcoverstheconnectivityofthetextureasitrelatestothedrainagecapabilityofthepavementthroughitssurfaceandsubsurfacevoids.Thisisaspecificdevicethattimeshowlongittakesaknownquantityofwater,undergravitationalpull,toescapethroughvoidsinthepavementtextureofthestructurebeingtested.Thetechniqueisintendedtoprovideameasureoftheabilityofthepavementtorelievepressurefromthefaceofvehiculartiresandthusanindicationofhydroplaningpotentialunderwetconditions.Afasterescapetimeindicatesathinnerfilmofwatermayexistbetweenthetireandthepavement,thusmoremicro-texturecouldbeexposedtoindentthefaceofthetireandmoresurfacefrictionavailabletothetire.Thelowerthenumberofsecondsittakestoevacuatethewater,thelowerthewaterpressureunderthetire.Itwillbeuptotheoperatortocomparetheresultsofthistesttootherpertinentfactorssuchasexpectedrainfallintensityandfrequency,aggregatetype,consistencyoftexture,grade,slope,expectedvehicularspeed,andaccidenthistory,todeterminetherelationshipbetweentheoutflowmeterreadingandthelikelihoodofhydroplaningonagivensurface.Comparingtheoutflowmeterreadingofapavementknowntohaveahistoryofhydroplaning,againstonewithagoodhistory,withallotherfactorssimilar,willgivetheoperatoranindicationoftheoutflowmeternumberthatwillbenecessarytopromotewetweathersafety.1.2Theresultsobtainedusingthistestmethodarerelatedtothemeanhydraulicradiusofapavedsurfaceandmaycorrelatewithothermethodstomeasuretexture.1.3Theresultsobtainedusingthistestmethodarerelatedtothemeantexturedepth(MTD).1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitati......
【中国标准分类号】:P66
【国际标准分类号】:93_080_10
【页数】:4P.;A4
【正文语种】:英语


【英文标准名称】:Windingwires.Specificationsforparticulartypesofenamelledroundcopperwindingwires.Polyesterorpolyesterimideovercoatedwithpolyamide-imideenamelledroundcopperwire,class200
【原文标准名称】:绕组线.第3部分:特殊类型漆包圆铜绕组线规范.第3节:聚酰亚胺包覆的聚酯或聚酰胺酯漆包圆铜线.200级
【标准号】:BS6811Sec.3.3-1993
【标准状态】:作废
【国别】:英国
【发布日期】:1993-03-15
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:性能;磨蚀;耐热震强度;聚酯;导电体;温度;等级(质量);绕组;铜;漆包线;圆形;层覆材料;制冷剂;耐化学性试验;绝缘线;电线;耐磨性;聚酰胺
【英文主题词】:
【摘要】:
【中国标准分类号】:K12
【国际标准分类号】:
【页数】:16P;A4
【正文语种】:英语