NF P98-640-1991 路面横标记.道路上使用的标记.喷射物:性能和规范

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【英文标准名称】:StandardTestMethodforTestingRockSlabstoEvaluateSoundnessofRiprapbyUseofSodiumSulfateorMagnesiumSulfate
【原文标准名称】:通过使用硫酸钠和硫酸锰测试岩石厚板以评价乱石安定性的标准试验方法
【标准号】:ASTMD5240-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D18.17
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;岩石;施工材料;板
【英文主题词】:riprap;rockdefects;rockdurability;rockweathering;soundnessofriprap
【摘要】:Rockriprapiscomposedofpiecesofnaturalrockthatareplacedonconstructionprojectstominimizetheeffectsoferosion.Theabilityofripraptowithstanddeteriorationfromweatheringaffectsboththeeffectivenessoftheprojectanditscost.Thesodiumsulfateormagnesiumsulfatesoundnesstestisonemethodbywhichtoestimatequalitativelythedurabilityofrockunderweatheringconditions.Note18212;Thequalityofresultsproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingitandsuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.ReliableresultsdependonmanyfactorsandPracticeD3740providesameansofevaluatingsomeofthem.Theresultsofthistestmethodarenottobeusedasthesolebasisfordeterminationofrockdurability,butrathershouldalwaysbeusedinconjunctionwiththeresultsofothertests.Thistestmethodhasbeenusedtoevaluatemanydifferenttypesofrocks.Therehavebeenoccasionswhentestresultshaveprovideddatathathavenotagreedwiththedurabilityofrockunderactualfieldconditions;samplesyieldingalowsoundnesslosshavedisintegratedinactualusage,andthereversehasbeentrue.1.1Thistestmethodcoverstestproceduresforevaluatingthesoundnessofriprapbytheeffectsofasodiumormagnesiumsulfatesolutiononslabsofrock.1.2ThevaluesstatedineitherSIorinch-poundunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:D53
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Potentiometersforuseinelectronicequipment;part2:blankdetailspecification:lead-screwactuatedandrotarypresetpotentiometers;assessmentlevelE
【原文标准名称】:电子设备用电位器第2-1部分:空白详细规范:螺杆驱动和旋转预调电位器评定水平E
【标准号】:IEC60393-2-1-1989
【标准状态】:现行
【国别】:国际
【发布日期】:1989-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC40
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;电子工程;质量;作标记;空白格式;规范(批准);额定值;电阻器;转动;检验;调整;电位器;螺杆驱动的;微调电位器;质量评定;试验;详细规范;主轴;元部件;电气元件
【英文主题词】:Adjustments;Blankforms;Components;Detailspecification;Electricalcomponents;Electricalengineering;Electronicengineering;Inspection;Lead-screwactuated;Marking;Potentiometers(resistors);Quality;Qualityassessment;Ratings;Resistors;Rotationalmotion;Specification(approval);Spindles;Testing;Trimmingpotentiometers
【摘要】:Containsrequirementsforstyleandlayoutandminimumcontentofdetailspecifications.Specifiesrequirementsfordimensions,ratings,characteristics,markingandorderinginformations.Describestheinspectionrequirementsincludingsampling,periodi
【中国标准分类号】:L14
【国际标准分类号】:31_040_20
【页数】:37P.;A4
【正文语种】:英语