1、Designation:D588695(Reapproved 2018)Standard Guide forSelection of Test Methods to Determine Rate of FluidPermeation Through Geomembranes for SpecificApplications1This standard is issued under the fixed designation D5886;the number immediately following the designation indicates the year oforiginal
2、adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers selecting one or more appropriate testmethods to assess t
3、he permeability of all candidate geomem-branes for a proposed specific application to various per-meants.The widely different uses of geomembranes as barriersto the transport and migration of different gases,vapors,andliquids under different service conditions require determina-tions of permeability
4、 by test methods that relate to and simulatethe service.Geomembranes are nonporous,homogeneous ma-terials that are permeable in varying degrees to gases,vapors,and liquids on a molecular scale in a three-step process by:(1)dissolution in or absorption by the geomembrane on theupstream side,(2)diffus
5、ion through the geomembrane,and(3)desorption on the downstream side of the barrier.1.2 The rate of transmission of a given chemical species,whether as a single permeant or in mixtures,is driven by itschemical potential or in practical terms by its concentrationgradient across the geomembrane.Various
6、 methods to assessthe permeability of geomembranes to single componentpermeants,such as individual gases,vapors,and liquids arereferenced and briefly described.1.3 Various test methods for the measurement of permeationand transmission through geomembranes of individual speciesin complex mixtures suc
7、h as waste liquids are discussed.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulat
8、ory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organ
9、ization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D471 Test Method for Rubber PropertyEffect of LiquidsD814 Test Method for Rubber PropertyVapor Transmis-sion of Volatile LiquidsD815 Test Method for Testing Coated Fabrics HydrogenPermeance(Withdrawn 1987)3D14
10、34 Test Method for Determining Gas Permeability Char-acteristics of Plastic Film and SheetingD4439 Terminology for GeosyntheticsD4491/D4491M Test Methods for Water Permeability ofGeotextiles by PermittivityE96/E96M Test Methods for Water Vapor Transmission ofMaterialsF372 Test Method for Water Vapor
11、 Transmission Rate ofFlexible Barrier Materials Using an Infrared DetectionTechnique(Withdrawn 2009)3F739 Test Method for Permeation of Liquids and Gasesthrough Protective Clothing Materials under Conditions ofContinuous Contact3.Terminology3.1 Definitions:3.1.1 downstream,nthe space adjacent to the
12、 geomem-brane through which the permeant is flowing.3.1.2 geomembrane,nan essentially impermeable geosyn-thetic composed of one or more synthetic sheets.(See Termi-nology D4439.)3.1.2.1 DiscussionIn geotechnical engineering,“essen-tially impermeable”means that no measurable liquid flowsthrough a geo
13、synthetic when tested in accordance with TestMethods D4491/D4491M.1This guide is under the jurisdiction ofASTM Committee D35 on Geosyntheticsand is the direct responsibility of Subcommittee D35.10 on Geomembranes.Current edition approved Feb.1,2018.Published February 2018.Originallyapproved in 1995.
14、Last previous edition approved in 2011 as D5886 95(2011).DOI:10.1520/D5886-95R18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onth
15、e ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized princ
16、iples on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.3 geosynthetic,na planar product manufactured frompolymeric material used with soil,rock,earth,or other geo-technical engineering-related material as an integral part of aman-made project,structure,or system.(See TerminologyD4439.)3.1.4 permeability,nthe rate of flow under
