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【英文标准名称】:Metalliccoatings-Electroplatedcoatingsofcadmiumwithsupplementarytreatmentsonironorsteel
【原文标准名称】:金属涂层.对铁或钢进行辅助处理的镉电镀层
【标准号】:BSENISO2082-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-02-28
【实施或试行日期】:2009-02-28
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:粘附;应用;镉;镀镉;铬酸盐覆层;铬酸盐;铬酸盐处理;铬;分类;分类系统;覆层厚度;涂层;镉覆层;腐蚀;防腐蚀;耐腐蚀性;腐蚀试验;装饰覆层;测定;尺寸;电解镀层;电镀;黑色金属;精整;检验;铁;作标记;材料;材料试验;测量;金属涂层;金属电镀;金属的;金属;防护覆层;规范(验收);规范;钢;试验;厚度
【英文主题词】:Adhesion;Applications;Cadmium;Cadmiumplating;Chromatecoatings;Chromates;Chromating;Chromium;Classification;Classificationsystems;Coatingthickness;Coatings;Coatingsofcadmium;Corrosion;Corrosionprotection;Corrosionresistance;Corrosiontests;Decorativecoatings;Determination;Dimensions;Electrodepositedcoatings;Electrodeposition;Electroplating;Ferrousmetals;Finishes;Galvanization;Inspection;Iron;Marking;Materials;Materialstesting;Measurement;Metalcoatings;Metalplating;Metallic;Metals;Protectivecoatings;Specification(approval);Specifications;Steels;Testing;Thickness
【摘要】:
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:26P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforDeterminingDispersiveCharacteristicsofClayeySoilsbytheCrumbTest
【原文标准名称】:用团粒试验测定粘性土的色散特性的标准试验方法
【标准号】:ASTMD6572-2006
【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】:D18.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:测定;土壤;试验方法;试验
【英文主题词】:clay(dispersive);colloidalerodability;crumbtestmethod;dispersibility;dispersion;dispersiveclays;erosion
【摘要】:Thecrumbtestmethodprovidesasimple,quickmethodforfieldorlaboratoryidentificationofadispersiveclaysoil.Theinternalerosionfailuresofanumberofhomogeneousearthdams,erosionalongchannelorcanalbanks,andrainfallerosionofearthenstructureshavebeenattributedtocolloidalerosionalongcracksorotherflowchannelsformedinmassesofdispersiveclay(5).Thecrumbtestmethod,asoriginallydevelopedbyEmerson(6),wascalledtheaggregatecoherencetestandhadsevendifferentcategoriesofsoil-waterreactions.Sherard(5)latersimplifiedthetestbycombiningsomesoil-waterreactionssothatonlyfourcategories,orgrades,ofsoildispersionareobservedduringthetest.Thecrumbtestisarelativelyaccuratepositiveindicatorofthepresenceofdispersivepropertiesinasoil.Thecrumbtest,however,isnotacompletelyreliablenegativeindicatorthatsoilsarenotdispersive.Thecrumbtest,canseldomberelieduponasasoletestmethodfordeterminingthepresenceofdispersiveclays.Thedouble-hydrometertest(TestMethodD4221)andpinholetest(TestMethodD4647)aretestmethodsthatprovidevaluableadditionalinsightintotheprobabledispersivebehaviorofclaysoils.Note28212;Thequalityoftheresultproducedbythesetestmethodsisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthesetestmethodsarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliabletesting.Reliabletestingdependsonseveralfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodsprovideaqualitativeindicationofthenaturaldispersivecharacteristicsofclayeysoils.1.2Thesetestmethodsarenotapplicableforsoilswithlessthan12%fractionfinerthan0.005mmandwithaplasticityindexlessthanorequalto8.1.3Thecrumbtestmethodhassomelimitationsinitsusefulnessasanindicatorofdispersiveclay.Adispersivesoilmaysometimesgiveanondispersivereactioninthecrumbtest.Soilscontainingkaolinitewithknownfielddispersionproblemshaveshownnondispersivereactionsinthecrumbtest().However,ifthecrumbtestindicatesdispersion,thesoilisprobablydispersive.1.4Oven-driedsoilshouldnotbeusedtopreparecrumbtestspecimens,asirreversiblechangescouldoccurtothesoilpore-waterphysicochemicalpropertiesresponsiblefordispersion().1.5Thecrumbtestmethod,whileagoodquickindicationofdispersiveclay,shouldusuallyberuninconjunctionwithapinholetestandadoublehydrometertest,TestMethodsD4647andD4221,respectively.Note1Insomecases,theresultsofthepinhole,crumb,anddouble-hydrometertestmethodsmaydisagree.Crumbtestmethodsareabetterindicatorofdispersiveclaysthanofnondispersiveclays().1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B11
【国际标准分类号】:13_080_20
【页数】:5P.;A4
【正文语种】: