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ASTM G57-2006 用温纳四电极法现场测量泥土电阻率的标准试验方法

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【英文标准名称】:StandardTestMethodforFieldMeasurementofSoilResistivityUsingtheWennerFour-ElectrodeMethod
【原文标准名称】:用温纳四电极法现场测量泥土电阻率的标准试验方法
【标准号】:ASTMG57-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:G01.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:污染;现场试验;测量;金属;电阻器;磨损
【英文主题词】:fourelectrodesmethod;soilresistivity
【摘要】:Measurementofsoilresistivityisusedforthecontrolofcorrosionofburiedstructures.Soilresistivityisusedbothfortheestimationofexpectedcorrosionratesandforthedesignofcathodicprotectionsystems.Asanessentialdesignparameterforcathodicprotectionsystems,itisimportanttotakeasmanymeasurementsasnecessarysoastogetasufficientlyrepresentativecharacterizationofthesoilenvironmentthattheentireburiedstructurewillexperience.1.1Thismethodcoverstheequipmentandproceduresforthefieldmeasurementofsoilresistivity,bothinsituandforsamplesremovedfromtheground,foruseinthecontrolofcorrosionofburiedstructures.1.2Toconvertcm(metricunit)tometre(SIunit),divideby100.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:5P.;A4
【正文语种】:


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【英文标准名称】:SpecificationforUnifiedprecisionhexagonbolts,screws,&nuts(UNC&UNFthreads)-Normalseries
【原文标准名称】:统一精密六角头螺栓、螺钉和螺母(UNC与UNF螺纹)规范.标准系列
【标准号】:BS1768-1963
【标准状态】:现行
【国别】:英国
【发布日期】:1963-09-17
【实施或试行日期】:1963-09-17
【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】:尺寸;螺钉;量规;材料的机械性能;作标记;防松螺母;六角头紧固件;统一螺纹;螺栓;扁销孔;螺母;长度;螺纹;精密度
【英文主题词】:length;hexagonal-headfasteners;gauges;cotterpinholes;threads;marking;unifiedscrewthreads;precision;mechanicalpropertiesofmaterials;screws(bolts);bolts;nuts;dimensions;locknuts
【摘要】:Dimensions,generalrequirementsfor$9Dinto2in.Dimensionsforbolts,screws,ordinarynuts,thickordinarynuts,locknuts,slottednuts,thickslottednuts.Formulaeforcalculationofdimensionsforboltandscrewheadsandnutsinintermediateorlargersizes.Appliestoferrousandnon-ferrousbolts,screws,nutsand,forsteel,referstoappropriatequalitiesupto75tonf/in2minimumtensilestrength.Manufacturingrequirements,includingdecarburizationandrollinglaps,mechanicalpropertiesandtestsforsteelbolts,screws,nuts.Steelssuitableforvariousmethodsofmanufacturearelisted;testingfixturesandrecommendedgauges,standardsizesofboltsandscrewsmostlikelytobestocked,shortestlengthsdesignatedasbolts,identificationmarking.
【中国标准分类号】:J13
【国际标准分类号】:21_060_10;21_060_20
【页数】:50P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforVibratoryPackingDensityofFormedCatalystParticlesandCatalystCarriers
【原文标准名称】:成型催化剂颗粒和催化剂载体振动填充密度的标准试验方法
【标准号】:ASTMD4180-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D32.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:carriers;catalyst;packingdensity;vibratory;Carriers;Catalysts/catalystcarriers;Density--petroleumproducts;Heatingtests--petroleumproducts;Packingdensity(ofcatalysts);Reformingcatalysts;Vibratedapparentpackingdensity
【摘要】:Thistestmethodistobeusedformeasuringthevibratorypackingdensityofformedparticlesthatwillnotbreakupduringsampling,filling,orvibratingofthemeasuringcylinderundertestconditions.1.1Thistestmethodcoversthedeterminationofthevibratorypackingdensityofformedcatalystandcatalystcarriers.Forthepurposeofthistest,catalystparticlesaredefinedasextrudates,spheres,orformedpelletsof0.8to4.8-mm(1/32to3/16-in.)nominaldiameter.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G74
【国际标准分类号】:71_040_30
【页数】:3P.;A4
【正文语种】:英语