【英文标准名称】:StandardTestMethodsforLiquidLimit,PlasticLimit,andPlasticityIndexofSoils
【原文标准名称】:土壤液体极限、塑性极限和塑性指数的标准试验方法
【标准号】:ASTMD4318-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑;施工材料;极限尺寸;塑性指数(土壤);土壤;试验
【英文主题词】:activity;Atterberglimits;liquidlimit;plasticityindex;plasticlimit
【摘要】:Thesetestmethodsareusedasanintegralpartofseveralengineeringclassificationsystemstocharacterizethefine-grainedfractionsofsoils(seePracticesD2487andD3282)andtospecifythefine-grainedfractionofconstructionmaterials(seeSpecificationD1241).Theliquidlimit,plasticlimit,andplasticityindexofsoilsarealsousedextensively,eitherindividuallyortogether,withothersoilpropertiestocorrelatewithengineeringbehaviorsuchascompressibility,hydraulicconductivity(permeability),compactibility,shrink-swell,andshearstrength.Theliquidandplasticlimitsofasoilanditswatercontentcanbeusedtoexpressitsrelativeconsistencyorliquidityindex.Inaddition,theplasticityindexandthepercentagefinerthan2-x03BC;mparticlesizecanbeusedtodetermineitsactivitynumber.Thesemethodsaresometimesusedtoevaluatetheweatheringcharacteristicsofclay-shalematerials.Whensubjectedtorepeatedwettinganddryingcycles,theliquidlimitsofthesematerialstendtoincrease.Theamountofincreaseisconsideredtobeameasureofashale’susceptibilitytoweathering.Theliquidlimitofasoilcontainingsubstantialamountsoforganicmatterdecreasesdramaticallywhenthesoilisoven-driedbeforetesting.Comparisonoftheliquidlimitofasamplebeforeandafteroven-dryingcanthereforebeusedasaqualitativemeasureoforganicmattercontentofasoil(seePracticeD2487).Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740,generally,areconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodscoverthedeterminationoftheliquidlimit,plasticlimit,andtheplasticityindexofsoilsasdefinedinSectiononTerminology.1.2Twomethodsforpreparingtestspecimensareprovidedasfollows:Wetpreparationmethod,asdescribedin.Drypreparationmethod,asdescribedin.Themethodtobeusedshallbespecifiedbytherequestingauthority.Ifnomethodisspecified,usethewetpreparationmethod.1.2.1Theliquidandplasticlimitsofmanysoilsthathavebeenallowedtodrybeforetestingmaybeconsiderablydifferentfromvaluesobtainedonnon-driedsamples.Iftheliquidandplasticlimitsofsoilsareusedtocorrelateorestimatetheengineeringbehaviorofsoilsintheirnaturalmoiststate,samplesshouldnotbepermittedtodrybeforetestingunlessdataondriedsamplesarespecificallydesired.1.3Twomethodsfordeterminingtheliquidlimitareprovidedasfollows:MethodA,MultipointtestasdescribedinSections.MethodB,One-pointtestasdescribedinSections.Themethodtobeusedshallbespecifiedbytherequestingauthority.Ifnomethodisspecified,useMethodA.1.3.1Themultipointliquidlimitmethodisgenerallymoreprecisethantheone-pointmethod.Itisrecommendedthatthemultipointmethodbeusedincaseswheretestresultsmaybesubjecttodispute,orwheregreaterprecisionisrequired.1.3.2Becausetheone-pointmethodrequirestheoperatortojudgewhenthetestspecimenisapproximatelyatitsliquidlimit,itisparticularlynotrecommendedforusebyinexperiencedoperat......
【中国标准分类号】:B10
【国际标准分类号】:93_020
【页数】:16P.;A4
【正文语种】:


【英文标准名称】:Leather-Testforadhesionoffinish
【原文标准名称】:皮革.涂层粘着牢度试验
【标准号】:ISO11644-2009
【标准状态】:现行
【国别】:国际
【发布日期】:2009-05
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO
【标准类型】:()
【标准水平】:()
【中文主题词】:粘附;粘结强度;胶粘连接;粘合性;胶粘剂;粘性支持;粘合强度;覆层厚度;定义;结束;加工;浸渍材料;浸渍;层;皮革;材料试验;方法;规程;抽样方法;试验设备;试验报告;试验
【英文主题词】:Adhesion;Adhesivestrength;Adhesive-bondedjoints;Adhesiveness;Adhesives;Agglutinantbacking;Bondstrength;Coatingthickness;Definitions;Finish;Finishing;Impregnatingmaterials;Impregnation;Layers;Leather;Materialstesting;Methods;Procedures;Samplingmethods;Testequipment;Testreports;Testing
【摘要】:
【中国标准分类号】:Y45
【国际标准分类号】:59_140_30
【页数】:11P;A4
【正文语种】:英语