ASTM_D_5887_-_D_5887M_-_22.pdf

Designation:D5887/D5887M22Standard Test Method forMeasurement of Index Flux Through Saturated GeosyntheticClay Liner Specimens Using a Flexible Wall Permeameter1This standard is issued under the fixed designation D5887/D5887M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers an index test that coverslaboratory measurement of flux through saturated geosyntheticclay liner(GCL)specimens using a flexible wall permeameter.1.2 This test method is applicable to GCL products havinggeotextile backing(s).It is not applicable to GCL products withgeomembrane backing(s),geofilm backing(s),or polymer coat-ing backing(s).1.3 This test method provides a measurement of flux undera prescribed set of conditions that can be used for manufactur-ing quality control.The test method can also be used to checkconformance.The flux value determined using this test methodis not considered to be representative of the in-service flux ofGCLs.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.1.5 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 regulatory limitations prior to use.1.6 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 Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D374/D374M Test Methods for Thickness of Solid Electri-cal InsulationD653 Terminology Relating to Soil,Rock,and ContainedFluidsD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD4439 Terminology for GeosyntheticsD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingE145 Specification for Gravity-Convection and Forced-Ventilation OvensE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Definitions:3.1.1 flux,nthe rate of discharge of water under laminarflow conditions through a unit cross-sectional area of a GCLspecimen.3.1.2 geosyntheticclayliner(GCL),nafactory-manufactured geosynthetic hydraulic barrier consisting of claysupported by geotextiles or geomembranes,or both,that areheld together by needling,stitching,or chemical adhesives.3.1.3 index test,na test procedure that may contain a bias,but that may be used to establish an order for a set of specimenswith respect to the property of interest.3.1.4 For definitions of other terms used in this test method,see Terminologies D653 and D4439.4.Summary of Test Method4.1 This test method involves permeation of a 100-mm4-in.diameter GCL test specimen.The specimen is set up in1This test method is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.04 on Geosyn-thetic Clay Liners.Current edition approved May 1,2022.Published May 2022.Originallyapproved in 1995.Last previous edition approved in 2020 as D5887/D5887M 20.DOI:10.1520/D5887_D5887M-22.2For 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 onthe ASTM website.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 principles 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.1a flexible wall permeameter and subjected to a total stress of550 kPa 80 psi and a back pressure of 515 kPa 75 psi for aperiod of 48 h.Flow is initiated using deionized water byraising the pressure on the influent side of the test specimen to530 kPa 77 psi.The flux is determined when inflow andoutflow are approximately equal(within 625%).5.Significance and Use5.1 This test method yields the flux of water through asaturated GCL specimen that is consolidated,hydrated,andpermeated under a pr