ASTM_D_6495_-_D_6495M_-_18_2022.pdf

Designation:D6495/D6495M18(Reapproved 2022)Standard Guide forAcceptance Testing Requirements for Geosynthetic ClayLiners1This standard is issued under the fixed designation D6495/D6495M;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 guide covers guidelines for the acceptance testingrequirements for geosynthetic clay liner(GCL)materials,describing types of tests,test methods,and recommendedverifications.1.2 This guide is intended to aid purchasers,installers,contractors,owners,operators,designers,and agencies inestablishing a minimum level of effort for product acceptancetesting and verification.This is intended to ensure that thesupplied GCL rolls meet accepted material specifications.1.3 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.1.4 This guide offers an organized collection of informationor a series of options and does not recommend a specificcourse of action.This guide cannot replace education orexperience and should be used in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This guide is not intended to represent orreplace the standard of care by which the adequacy of a givenprofessional service must be judged,nor should this guide beapplied without consideration of a projects many uniqueaspects.The word“Standard”in the title of this guide meansonly that the guide has been approved through the ASTMconsensus process.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:2D792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD882 Test Method for Tensile Properties of Thin PlasticSheetingD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD5199 Test Method for Measuring the Nominal Thicknessof GeosyntheticsD5887/D5887M Test Method for Measurement of IndexFlux Through Saturated Geosynthetic Clay Liner Speci-mens Using a Flexible Wall PermeameterD5888 Guide for Storage and Handling of GeosyntheticClay LinersD5889/D5889M Practice for Quality Control of Geosyn-thetic Clay LinersD5890 Test Method for Swell Index of Clay Mineral Com-ponent of Geosynthetic Clay LinersD5891/D5891M Test Method for Fluid Loss of Clay Com-ponent of Geosynthetic Clay LinersD5993 Test Method for Measuring Mass per Unit Area ofGeosynthetic Clay LinersD5994/D5994M Test Method for Measuring Core Thicknessof Textured GeomembranesD6072/D6072M Practice for Obtaining Samples of Geosyn-thetic Clay LinersD6243/D6243M Test Method for Determining the Internaland Interface Shear Strength of Geosynthetic Clay Linerby the Direct Shear MethodD6496/D6496M Test Method for Determining AverageBonding Peel Strength Between Top and Bottom Layersof Needle-Punched Geosynthetic Clay Liners1This guide is under the jurisdiction ofASTM Committee D35 on Geosyntheticsand is the direct responsibility of Subcommittee D35.04 on Geosynthetic ClayLiners.Current edition approved Oct.1,2022.Published October 2022.Originallyapproved in 1999.Last previous edition approved in 2018 as D6495/D6495M 18.DOI:10.1520/D6495_D6495M-18R22.2For 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.1D6693/D6693M Test Method for Determining Tensile Prop-erties of Nonreinforced Polyethylene and NonreinforcedFlexible Polypropylene GeomembranesD6768/D6768M Test