BS 3690-1-1989+A2-2008 建筑与土木工程用沥青.第1部分:道路和其它铺砌区用沥青规范
作者:标准资料网 时间:2024-05-28 11:29:28 浏览:8500
来源:标准资料网
【英文标准名称】:Bitumensforbuildingandcivilengineering—Part1:Specificationforbitumensforroadsandotherpavedareas
【原文标准名称】:建筑与土木工程用沥青.第1部分:道路和其它铺砌区用沥青规范
【标准号】:BS3690-1-1989+A2-2008
【标准状态】:作废
【国别】:英国
【发布日期】:1990-01-31
【实施或试行日期】:1990-01-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:沥青;分类系统;施工材料;轻制沥青;蒸馏;等级(质量);铺砌区;路面(道路);石油产品;道路;抽样方法;软化点;溶解度;材料热性质;粘度;磨耗层(道路)
【英文主题词】:Bitumens;Classificationsystems;Constructionmaterials;Cut-backbitumens;Distillation;Grades(quality);Pavedareas;Pavements(roads);Petroleumproducts;Roads;Samplingmethods;Softeningpoint;Solubility;Thermalpropertiesofmaterials;Viscosity;Wearingcourses(roads)
【摘要】:A2->ThisPartofBS3690specifiestherequirementsforcut-backbitumenswhicharesuitableforuseinroadconstructionandmaintenanceintheUnitedKingdom.PenetrationgradebitumensarenowspecifiedinBSEN12591andBSEN13924.PavinggradebitumensarespecifiedinBSEN12591andhardpavinggradesarespecifiedinBSEN13924.
【英文标准名称】:StandardTestMethodforMeasuringFast-NeutronReactionRatesbyRadioactivationofIron
【原文标准名称】:用铁的放射性测量快中子反应速率的标准试验方法
【标准号】:ASTME263-2009
【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】:E10.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fastneutrondetector;ironactivation;reactionrate;54Fe(n,p);Fastneutronflux/fluence;Iron;Neutronactivationreactions;Radioactivation--fastneutronflux;Thresholddetectors--2.2MeV
【摘要】:DESIG:E26309^TITLE:StandardTestMethodforMeasuringFast-NeutronReactionRatesbyRadioactivationofIron^SIGNUSE:RefertoGuideE844forguidanceontheselection,irradiation,andqualitycontrolofneutrondosimeters.RefertoPracticeE261forageneraldiscussionofthedeterminationoffast-neutronfluenceratewiththresholddetectors.Pureironintheformoffoilorwireisreadilyavailableandeasilyhandled.Fig.1showsaplotofcrosssectionasafunctionofneutronenergyforthefast-neutronreaction54Fe(n,p)54Mn(1).Thisfigureisforillustrativepurposesonlytoindicatetherangeofresponseofthe54Fe(n,p)54Mnreaction.RefertoGuideE1018fordescriptionsofrecommendedtabulateddosimetrycrosssections.54Mnhasahalf-lifeof312.13days(3)(2)andemitsagammaraywithanenergyof834.845keV(5).(2)Interferingactivitiesgeneratedbyneutronactivationarisingfromthermalorfastneutroninteractionsare2.57878(46)-h56Mn,44.95-d(8)59Fe,and5.2710-y(8)60Co(2,3).(ConsultRef(2)formoreprecisevaluescurrentlyacceptedforthehalf-lives.)Interferencefrom56Mncanbeeliminatedbywaiting48hbeforecounting.Althoughchemicalseparationof54Mnfromtheirradiatedironisthemosteffectivemethodforeliminating59Feand60Co,directcountingofironfor54Mnispossibleusinghigh-resolutiondetectorsystemsorunfoldingorstrippingtechniques,especiallyifthedosimeterwascoveredwithcadmiumorboronduringirradiation.Alteringtheisotopiccompositionoftheirondosimeterisanotherusefultechniqueforeliminatinginterferencefromextraneousactivitieswhendirectsamplecountingistobeemployed.Thevaporpressuresofmanganeseandironaresuchthatmanganesediffusionlossesfromironcanbecomesignificantattemperaturesaboveabout700x00B0;C.Therefore,precautionsmustbetakentoavoidthediffusionlossof54Mnfromirondosimetersathightemperature.Encapsulatingtheirondosimeterinquartzorvanadiumwillcontainthemanganeseattemperaturesuptoabout900x00B0;C.Sections6,7and8thatfollowwerespecificallywrittentodescribethemethodofchemicalseparationandsubsequentcountingofthe54Mnactivity.Whenoneelectstocounttheirondosimetersdirectly,thoseportionsofSections6,7and8thatpertaintoradiochemicalseparationshouldbedisregarded.Note18212;Thefollowingportionsofthistestmethodapplyalsotodirectsample-countingmethods:6.1-6.3,7.4,7.9,7.10,8.1-8.5,8.18,8.19,and10-13.FIG.154Fe(n,p)54MnCrossSection^SCOPE:1.1Thistestmethoddescribesproceduresformeasuringreactionratesbytheactivationreaction54Fe(n,p)54Mn.1.2Thisactivationreactionisusefulformeasuringneutronswithenergiesaboveapproximately2.2MeVandforirradiationtimesuptoabout3years(forlongerirradiations,seePracticeE261).1.3Withsuitabletechniques,fission-neutronfluenceratesabove108cmx2212;2x00B7;sx2212;1canbedetermin......
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:Caplightsforuseinminessusceptibletofiredamp.Generalrequirements.Constructionandtestinginrelationtotheriskofexplosion
【原文标准名称】:对沼气敏感的矿工用头灯.一般要求.爆炸危险相关的建筑和测试
【标准号】:BSEN62013-1-2006
【标准状态】:作废
【国别】:英国
【发布日期】:2006-09-29
【实施或试行日期】:2006-09-29
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:头灯(矿工用);电气器具;电气工程;电气设备;电驱动装置;设备;沼气;可燃性环境;灯;灯具;矿;采掘;采掘设备;槽
【英文主题词】:Caplamps;Electricappliances;Electricalengineering;Electricalequipment;Electrically-operateddevices;Equipment;Fire-damp;Flammableatmospheres;Lamps;Luminaires;Mines;Mining;Miningequipment;Pits
【摘要】:ThispartofIEC62013specifiesrequirementsfortheconstructionandtestingofcaplights,includingcaplightswithapointofconnectionforanotherapparatus,foruseinminessusceptibletofiredamp(GroupI–electricalapparatusforexplosivegasatmospheresasdefinedinIEC60079-0).Itdealsonlywiththeriskofthecaplightbecomingasourceofignition.TherequirementsofIEC60079-0donotapplyunlessspecified.Thisstandardisalsoapplicabletocaplightsintendedforuseinmineswhichhavebecometemporarilyendangeredbyanexplosivegasatmosphere,forexampleinminerescueoperations.Caplightscomplyingwiththisstandardareintendedforpersonaluseundernormalconditionsof:Temperature:0℃to+40℃Pressure:0,8barto1,1bar
【中国标准分类号】:K73
【国际标准分类号】:29_260_20;73_100_20
【页数】:22P;A4
【正文语种】:英语
