JIS H1413-1996 铜镍电阻材料的化学分析方法
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【英文标准名称】:Methodsofchemicalanalysisforcoppernickelresistancematerial
【原文标准名称】:铜镍电阻材料的化学分析方法
【标准号】:JISH1413-1996
【标准状态】:现行
【国别】:日本
【发布日期】:1996-03-01
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonNon-FerrousMetals
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;合金;有色金属合金;铜合金;电阻率;含镍合金;化学分析和试验;材料的电学性质
【英文主题词】:chemicalanalysisandtesting;testing;electricalresistivity;electricalpropertiesofmaterials;copperalloys;non-ferrousalloys;nickel-containingalloys;
【摘要】:この規格は,JISC2521に規定された化学成分(銅,ニッケル,コバルト,マンガン)の分析方法について規定する。
【中国标准分类号】:H13
【国际标准分类号】:77_120_30
【页数】:14P;A4
【正文语种】:日语
【英文标准名称】:StandardTestMethodforMicroscopicalDeterminationofParametersoftheAir-VoidSysteminHardenedConcrete
【原文标准名称】:硬化混凝土中的空腔系统的参数的显微镜检验的标准试验方法
【标准号】:ASTMC457/C457M-2010a
【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】:C09.65
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aircontent;airvoidparametersofhardenedconcrete;area-preparedsurfacerequired;averagechord-lengthofvoids;determinationofair-voidparameters;entrainedvoid;entrappedvoid;gritsforlappinghardenedconcrete;indexpoint;lapping;lengtho
【摘要】:Theparametersoftheair-voidsystemofhardenedconcretedeterminedbytheproceduresdescribedinthistestmethodarerelatedtothesusceptibilityofthecementpasteportionoftheconcretetodamagebyfreezingandthawing.Hence,thistestmethodcanbeusedtodevelopdatatoestimatethelikelihoodofdamageduetocyclicfreezingandthawingortoexplainwhyithasoccurred.Thetestmethodcanalsobeusedasanadjuncttothedevelopmentofproductsorproceduresintendedtoenhancetheresistanceofconcretetocyclicfreezingandthawing(1).Valuesforparametersoftheair-voidsystemcanbeobtainedbyeitheroftheproceduresdescribedinthistestmethod.Noprovisionismadefordistinguishingamongentrappedairvoids,entrainedairvoids,andwatervoids.Anysuchdistinctionisarbitrary,becausethevarioustypesofvoidsintergradeinsize,shape,andothercharacteristics.Reportsthatdomakesuchadistinctiontypicallydefineentrappedairvoidsasbeinglargerthan1mminatleastonedimensionbeingirregularinshape,orboth.Thehoney-combingthatisaconsequenceofthefailuretocompacttheconcreteproperlyisonetypeofentrappedairvoid(9,10).Watervoidsarecavitiesthatwerefilledwithwateratthetimeofsettingoftheconcrete.Theyaresignificantonlyinmixturesthatcontainedexcessivemixingwaterorinwhichpronouncedbleedingandsettlementoccurred.Theyaremostcommonbeneathhorizontalreinforcingbars,piecesofcoarseaggregateandaschannelwaysalongtheirsides.Theyoccuralsoimmediatelybelowsurfacesthatwerecompactedbyfinishingoperationsbeforethecompletionofbleeding.Applicationofthepaste-airratioprocedureisnecessarywhentheconcreteincludeslargenominalmaximumsizeaggregate,suchas50mm[2in.]ormore.Preparedsectionsofsuchconcreteshouldincludeamaximumofthemortarfraction,soastoincreasethenumberofcountsonairvoidsortraverseacrossthem.Theratioofthevolumeofaggregatetothevolumeofpasteintheoriginalmixmustbeaccuratelyknownorestimatedtopermitthecalculationoftheair-voidsystemsparametersfromthemicroscopicallydeterminedpaste-airratio.Note18212;Theair-voidcontentdeterminedinaccordancewiththistestmethodusuallyagreescloselywiththevaluedeterminedonthefreshconcreteinaccordancewithTestMethodsC138/C138M,C173/C173M,orC231(11).However,significantdifferencesmaybeobservedifthesampleoffreshconcreteisconsolidatedtoadifferentdegreethanthesamplelaterexaminedmicroscopically.Forconcretewitharelativelyhighaircontent(usuallyover7.5%),thevaluedeterminedmicroscopicallymaybehigherbyoneormorepercentagepointsthanthatdeterminedbyTestMethodC231.1.1Thistestmethoddescribesproceduresformicroscopicaldeterminationsoftheaircontentofhardenedconcreteandofthespecificsurface,voidfrequency,spacingfactor,andpaste-airratiooftheair-voidsysteminhardenedconcrete(1).Twoproceduresaredescribed:1.1.1ProcedureA,thelinear-traversemethod(2,3).1.1.2ProcedureB,t......
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:15P.;A4
【正文语种】:英语
【英文标准名称】:Aerospace;seamlessstructuraltubesinsteelandnickelalloys;technicalspecification
【原文标准名称】:航空航天.钢和镍合金无缝结构管材.技术规范
【标准号】:DIN29657-1991
【标准状态】:现行
【国别】:德国
【发布日期】:1991-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收规范;供货方式;规范(审批);结构管;定义;航天运输;无缝的;航空运输;检验;航空航天运输;无缝管;钢;镍合金;管;交货条件;试验;镍
【英文主题词】:seamlesspipes;steels;structuralpipes;aerospacetransport;spacetransport;formonsupply;airtransport;nickel;inspection;specification(approval);testing;nickelalloys;definitions;acceptancespecific
【摘要】:Thestandardcoversthedatarequiredtothemanufacture,deliveryandtestingofseamlesstructuraltubesofsteelandnickelalloys.#,,#
【中国标准分类号】:H48;V11
【国际标准分类号】:6085;6185
【页数】:23P;A4
【正文语种】:德语
