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ASTM D2937-2010 传动缸法测定现场土壤密度的标准试验方法

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【英文标准名称】:StandardTestMethodforDensityofSoilinPlacebytheDrive-CylinderMethod
【原文标准名称】:传动缸法测定现场土壤密度的标准试验方法
【标准号】:ASTMD2937-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D18.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compactioncontrol;densitytesting;drivecylinder;drivecylindertest;fielddensity;in-placedensity;plugsampler;qualitycontrol;subsurfacesampler;surfacesampler;unitweight;Backfill--testing;Subsurfaceinvestigation--soil/rock;S
【摘要】:Thistestmethodcanbeusedtodeterminethein-placedensityofsoilswhichdonotcontainsignificantamountsofparticlescoarserthan4.75mm(3/16in.),andwhichcanbereadilyretainedinthedrivecylinder.Thistestmethodmayalsobeusedtodeterminethein-placedensityofcompactedsoilsusedinconstructionofstructuralfill,highwayembankments,orearthdams.Whenthein-placedensityistobeusedasabasisforacceptance,thedrivecylindervolumesmustbeaslargeaspracticalandnotlessthan850cm3(0.030ft3).Thistestmethodisnotrecommendedforuseinorganicorfriablesoils.Thistestmethodmaynotbeapplicableforsoft,highlyplastic,noncohesive,saturatedorothersoilswhichareeasilydeformed,compressduringsampling,orwhichmaynotberetainedinthedrivecylinder.Theuseofthistestmethodinsoilscontainingparticlescoarserthan4.75mm(3/16in.)mayresultindamagetothedrivecylinderequipment.Soilscontainingparticlescoarserthan4.75mm(3/16in.)maynotyieldvalidresultsifvoidsarecreatedalongthewallofcylinderduringdriving,orifparticlesaredislodgedfromthesampleendsduringtrimming.Thegeneralprinciplesofthistestmethodhavebeensuccessfullyusedtoobtainsamplesofsomefieldcompactedfine-grainedsoilshavingamaximumparticlesizeof4.75mm(3/16in.)forpurposesotherthandensitydeterminations,suchasthetestingforengineeringproperties.Note18212;Notwithstandingthestatementsonprecisionandbiascontainedinthisstandard:Theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesused.AgencieswhichmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthismethodarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliabletesting.Reliabletestingdependsonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthedeterminationofin-placedensityofsoilbythedrive-cylindermethod.Thetestmethodinvolvesobtainingarelativelyintactsoilsamplebydrivingathin-walledcylinderandthesubsequentactivitiesforthedeterminationofin-placedensity.Whensamplingorin-placedensityisrequiredatdepth,TestMethodD1587shouldbeused.1.2Thistestmethodisnotappropriateforsamplingorganicsoilswhichcancompressuponsampling,veryhardnaturalsoilsandheavilycompactedsoilswhichcannotbeeasilypenetratedbythedrivesampler,soilsoflowplasticitywhichwillnotbereadilyretainedinthecylinder,orsoilswhichcontainappreciableamountsofgravel(particlescoarserthan4.75mm(3/16in.)).Thepresenceofparticlescoarserthan4.75mm(3/16in.)mayintroducesignificanterrorsindensitymeasurementsbycausingvoidsalongthewallofthecylinderduringdriving,andwhencoarsematerialshavetobedislodgedbythetrimmingofthesampleobtainedbythecylinder.1.3Thistestmethodislimitedtotheproceduresnecessaryforobtainingspecimenssuitablefordeterminingthein-placedensi......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:8P.;A4
【正文语种】:英语


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【英文标准名称】:Electricitymetering-Paymentssystems-Part31:Particularrequirements-Staticpaymentmetersforactiveenergy(classes1and2)
【原文标准名称】:电表.付费系统.第31部分:特殊要求.电度表用固定付费系统(1和2类)
【标准号】:BSEN62055-31-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2006-01-30
【实施或试行日期】:2006-01-30
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:空气断路器;计数器;电流表;电流;数据通信;数据处理;数据存储;定义;交付;电性质和电现象;电学;电度表;财务事项;电气连接器的接口;中断;能耗测量;实功率电镀表;支付;断路开关
【英文主题词】:
【摘要】:ThispartofIEC62055appliestonewlymanufactured,staticwatt-hourpaymentmetersofaccuracyclasses1and2fordirectconnection,forthemeasurementofalternatingcurrentelectricalenergyconsumptionofafrequencyintherange45Hzto65Hzthatincludealoadswitchforthepurposeofinterruptionorrestorationoftheelectricitysupplytotheloadinaccordancewiththecurrentvalueoftheavailablecreditmaintainedinthepaymentmeter.Itdoesnotapplytostaticwatt-hourpaymentmeterswherethevoltageacrosstheconnectionterminalsexceeds600V(line-to-linevoltageformetersforpolyphasesystems).Itappliestopaymentmetersforindoorapplicationonly,wherethepaymentmetershallbemountedasfornormalservice(i.e.togetherwithaspecifiedmatchingsocketwhereapplicable).Paymentmetersareimplementationswhereallthemainfunctionalelementsareincorporatedinasingleenclosure,togetherwithanyspecifiedmatchingsocket.Therearealsomulti-partinstallationswherethevariousmainfunctionalelements,suchasthemeasuringelement,theuserinterfaceunit,tokencarrierinterface,andtheloadswitchareimplementedinmorethanoneenclosure,involvingadditionalinterfaces.ThispartofIEC62055doesnotapplytomultipartpaymentmeteringinstallations.FunctionalrequirementsthatapplytopaymentmetersarealsodefinedinthispartofIEC62055,andincludeinformativebasicfunctionalrequirementsandtestsfortheprepaymentmodeofoperationinAnnexA.Allowancesaremadefortherelativelywiderangeoffeatures,options,alternatives,andimplementationsthatmaybefoundinpractice.Thediversenatureandfunctionalityofpaymentmeterspreventthecomprehensivespecificationofdetailedtestmethodsforalloftheserequirements.However,inthiscase,therequirementsarestatedinsuchawaythattestscanthenbeformulatedtorespectandvalidatethespecificfunctionalityofthepaymentmeterbeingtested.ThispartofIEC62055doesnotcoverspecificfunctionalityorperformancerequirementsforsafety,circuitprotection,isolationorsimilarpurposesthatmaybespecifiedthroughreferencetootherspecificationsorstandards.ThispartofIEC62055doesnotcoversoftwarerequirements.SoftwarerequirementsforbasicenergymetermetrologyareunderconsiderationfortheIEC62059seriesofstandards,andinotherorganisations.ThispartofIEC62055coverstype-testingrequirementsonly.Foracceptancetesting,theconceptsgiveninIEC61358maybeusedasabasicguideline.DependabilityaspectsareaddressedintheIEC62059seriesofstandards.ThispartofIEC62055doesnotcoverconformitytestsandsystemcomplianceteststhatmayberequiredinconnectionwithlegalorotherrequirementsofsomemarkets.
【中国标准分类号】:N22
【国际标准分类号】:91_140_50
【页数】:66P.;A4
【正文语种】:英语


Product Code:SAE AMSC22542
Title:Cleaning Compound, High Pressure Cleaner, Liquid
Issuing Committee:Ams J Aircraft Maintenance Chemicals And Materials Committee
Scope: The specification establishes the requirements for a liquid cleaning compound intended for use in steam cleaning machines to clean metallic and painted, soiled surfaces.
Rationale: The specification establishes the requirements for a liquid cleaning compound intended for use in steam cleaning machines to clean metallic and painted, soiled surfaces.