IEC 61037-1990 计费和负载控制用电子脉动控制接收装置
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【英文标准名称】:Electronicripplecontrolreceiversfortariffandloadcontrol
【原文标准名称】:计费和负载控制用电子脉动控制接收装置
【标准号】:IEC61037-1990
【标准状态】:作废
【国别】:国际
【发布日期】:1990-10
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC13
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;接收机;定义;电子工程;规范(验收);负载控制;费率;脉动控制接收器;控制变压器;能量测量;电气工程;电控制设备;规范(批准)
【英文主题词】:
【摘要】:
【中国标准分类号】:N22;L87
【国际标准分类号】:29_240_30
【页数】:83P;A4
【正文语种】:英语
Product Code:SAE AS9434
Title:Bolt, Tee Head, Chamfered - Cres, Uns S66286, 130 Ksi Min, .3125-24 Unjf-3a
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available【英文标准名称】:StandardTestMethodforMeasurementofSuperpaveGyratoryCompactor(SGC)InternalAngleofGyrationUsingSimulatedLoading
【原文标准名称】:使用模拟载荷测定回转内角的高性能沥青路面回转式夯实机(SGC)测量的标准试验方法
【标准号】:ASTMD7115-2010
【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】:D04.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:angle;asphalt;bituminous;compaction;gyratory;Superpav;Compactionmeasurement;Gyratorycompactor;Hot-mixasphalt(HMA);Superpavegyratorycompactor
【摘要】:SGCsareusedtoproducehot-mixasphalt(HMA)specimensinthelaboratorytoassessvolumetricpropertiesandpredictpavementperformance.InthefabricationofanSGCspecimeninaccordancewithTestMethodD6925,looseHMAisplacedinsideametalmold,whichisthenplacedintoanSGC.Aconstantconsolidationpressureisappliedtothesamplewhilethemoldgyratesatanominallyconstantangle(referredtoastheangleofgyration)andrate.ConsistencyinthedensityoftheasphaltspecimensproducedasmeasuredbyTestMethodsD2726orD6752isveryimportanttothevalidityofthetestsperformed.SpecimensofaconsistentdensityareproducedwhenanSGCmaintainsaconstantpressureandaknownconstantangleofgyrationduringthecompactionprocess.ThereareseveralmanufacturersandmodelsofSGC.Eachmodelemploysauniquemethodofsetting,inducing,andmaintainingtheangleofgyration.Eachmodelalsoemploysauniquecalibrationsystemtomeasuretheexternalangleofgyration.TheseexistingcalibrationsystemscannotbeuseduniversallyonallofthedifferentSGCmodelscommerciallyavailable.InconsistenciesinasphaltspecimensproducedondifferentSGCmodelshavebeenatleastpartiallyattributedtovariationsintheangleofgyration.Thismethoddescribesinstrumentsandprocessesthatcanbeusedtoindependentlymeasuretheinternalangleofgyrationofanymanufacturersx2019;SGCmodelundersimulatedloadingconditions.Theexternalshapeoftheinstrumentchassisassuresthatthepointsofphysicalcontactbetweenthemoldendplatesandtheinstrumentoccuratafixedandknowndistanceawayfromtheaxisofgyration.Asaresult,theverticalloadisappliedatthesefixedpoints,creatingtiltingmomentsateachendofthemold.Unlessotherwisespecified,atiltingmomentof466.5N-mshallbeappliedtotheSGCbytheinstrumentwhilemakingthismeasurement.Note18212;Thequalityoftheresultsproducedbythistestmethodaredependentonthecompetenceofthepersonnelperformingtheprocedureandthecapability,calibration,andmaintenanceoftheequipmentused.AgenciesthatmeetthecriteriaofPracticeD3666aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3666alonedoesnotcompletelyassurereliableresults.Reliableresultsdependonmanyfactors;followingthesuggestionsofPracticeD3666orsomesimilaracceptableguidelineprovidesameansofevaluatingandcontrollingsomeofthosefactors.Note28212;A466.5N-mtiltingmomentcorrespondstoa22mmeccentricontheAFLS1ora21degconeangleontheDAVII-HMSwithanappliedloadof10603N(600kPaata150mmdiameterspecimensetting).1.1ThistestmethodcoverstheprocedureforthemeasurementoftheSuperpaveGyratoryCompactor(SGC)internalangleofgyrationusinganinstrumentcapableofsimulatingloadingconditionssimilartothosecreatedbyahotmixasphaltspecimen.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.2.1
