ASTM_D_6495_-_D_6495M_-_15.pdf

Designation:D6495/D6495M15Standard 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 assure 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 may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.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 and health practices and determine the applica-bility of regulatory limitations prior to use.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 Test Method for Measurement of Index Flux ThroughSaturated Geosynthetic Clay Liner Specimens Using aFlexible Wall PermeameterD5888 Guide for Storage and Handling of GeosyntheticClay LinersD5889 Practice for Quality Control of Geosynthetic ClayLinersD5890 Test Method for Swell Index of Clay Mineral Com-ponent of Geosynthetic Clay LinersD5891 Test Method for Fluid Loss of Clay Component ofGeosynthetic Clay LinersD5993 Test Method for Measuring Mass Per Unit of Geo-synthetic 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 LinersD6693/D6693M Test Method for Determining Tensile Prop-erties of Nonreinforced Polyethylene and NonreinforcedFlexible Polypropylene GeomembranesD6768/D6768M Test Method for Tensile Strength of Geo-synthetic 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 July 1,2015.Published August 2015.Originallyapproved in 1999.Last previous edition approved in 2014 as D649514.DOI:10.1520/D6495_D6495M-15.2For 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 States1 2.2 United States EPA Document:EPA/600/R-93/182 Technical Guidance Document QualityAssurance and Quality Control for Waste ContainmentFacilities32.3 ISO Standard:ISO 10318 GeosyntheticsTerms and definitions43.Terminology3.1 Geosynthetic Definitions:3.1.1 adhered geosynthetic clay liner(GCL),nGCL prod-uct in which the clay component is bonded to a film ormembrane by adhesion.3.1.2 coated GCL,nGCL product with at least one layerof a synthetic substance applied to the GCL as a fluid andallowed to solidify.3.1.3 geomembrane,nan essentially impermeable geosyn-thetic composed of one or more synthetic sheets.3.1.4 geosynthetic clay liner,GCL,nfactory manufacturedge