【英文标准名称】:StandardTestMethodforMeasuringtheExchangeComplexandCationExchangeCapacityofInorganicFine-GrainedSoils
【原文标准名称】:测量无机细粒土的交换复合体和阳离子交换量的标准试验方法
【标准号】:ASTMD7503-2010
【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】:D18.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bentonite;boundcations;cationexchangecapacity;cations;CEC;clay;exchangecomplex;solublecations
【摘要】:Fine-grainedsoilsareusedinwastecontainmentsystemsasbarrierstoflowandcontaminanttransport.Liquidscontainedbythesebarrierscancontainionsthatmayinteractwiththemineralsurfacesinfine-grainedsoils.Theliquidpassingthroughtheporesoffine-grainedsoilcaninteractwiththemineralsurface,andaffectthephysicalandchemicalcharacteristicsofthesoil.Thismethodcanbeusedaspartofanevaluationoftheseinteractions.Note18212;Thequalityoftheresultproducedbythisstandarddependsonthecompetenceofthepersonnelperformingthetestandthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting,sampling,inspection,etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliableresults.Reliableresultsdependonmanyfactors.PracticeD3740providesameansofevaluatingsomeofthesefactors.1.1Thistestmethoddescribestheproceduresformeasuringthesolubleandboundcationsaswellasthecationexchangecapacity(CEC)offine-grainedinorganicsoils.Claymineralsinfine-grainedsoilscarryanegativesurfacechargethatisbalancedbyboundcationsnearthemineralsurface.Theseboundcationscanbeexchangedbyothercationsintheporewater,whicharereferredtoassolublecations.Thecationexchangecapacityisameasureofthenegativesurfacechargeonthemineralsurface.TheCECgenerallyissatisfiedbycalcium(Ca),sodium(Na),magnesium(Mg),andpotassium(K),althoughothercationsmaybepresentdependingontheenvironmentinwhichthesoilexists.ThistestmethodwasdevelopedfromconceptsdescribedpreviouslyinLavkulich(1981)(1)andRhoades(1982)(2).Insoilswithappreciablegypsumorcalcite,dissolutionofthesemineralswillreleaseCainsolutionthatmayaffectthemeasurement.1.2Inthistestmethod,thesolublesaltsfromthemineralsurfacearewashedoffwithde-ionizedwaterandthentheconcentrationofsolublesaltswithintheextractismeasured.Theboundcationsoftheclayaremeasuredbyusingasolutioncontaininganindexionthatforcestheexistingcationsintheboundlayerintosolution.Thetotalconcentrationsofboundandsolublecationsinthissolutionaremeasured.TheCECismeasuredbydisplacingtheindexionwithanothersaltsolutionandmeasuringtheamountofthedisplacedindexion.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4AllobservedandcalculatedvaluesshallconformtotheguideforsignificantdigitsandroundingestablishedinPracticeD6026.TheproceduresinPracticeD6026thatareusedtospecifyhowdataarecollected,recorded,andcalculatedareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproceduresdonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsforthe......
【中国标准分类号】:B11
【国际标准分类号】:13_080;71_100_40
【页数】:5P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 舰船电缆密封工艺 |
| 英文名称： | Cable sealing technology of naval ship |
| 中标分类： |
船舶 >>
船舶综合 >>
船舶工艺 |
| ICS分类： |
造船和海上建筑物 >>
船舶和海上建筑物综合 >>
造船和海上建筑通用标准
|
| 替代情况： | CB/Z 105-74 CB/Z 130-74 |
| 发布日期： | 1997-10-27 |
| 实施日期： | 1998-06-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 13页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 船舶 船舶综合 船舶工艺 造船和海上建筑物 船舶和海上建筑物综合 造船和海上建筑通用标准