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This guide covers guidelines for the acceptance testing requirements for geosynthetic clay liner (GCL) materials, describing types of tests, test methods, and recommended verifications and is intended to aid purchasers, installers, contractors, owners, operators, designers and agencies in establishing a minimum level of effort for product acceptance testing and verification. This guide suggests the types of tests, the methods of the testing, and verification requirements for acceptance testing of GCL materials. It should be recognized that parties, organizations or representatives may perform additional tests and/or at other frequencies than required in this standard guide. In this case, the project-specific acceptance plan will then take precedence over this standard guide. Different properties such as clay mass per unit area, swell index, fluid loss, grab tensile strength, tensile strength, density and thickness of geomembrane support, and bonding peel strength shall be determined by subjecting the material to different test methods.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This guide covers guidelines for the acceptance testing requirements for geosynthetic clay liner (GCL) materials, describing types of tests, test methods, and recommended verifications.
1.2 This guide is intended to aid purchasers, installers, contractors, owners, operators, designers and agencies in establishing a minimum level of effort for product acceptance testing and verification. This is intended to assure that the supplied GCL rolls meet accepted material specifications.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This guide cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This guide is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this guide be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this guide means only that the guide has been approved through the ASTM consensus process.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D882 Test Method for Tensile Properties of Thin Plastic Sheeting
D1505 Test Method for Density of Plastics by the Density-Gradient Technique
D5199 Test Method for Measuring the Nominal Thickness of Geosynthetics
D5887 Test Method for Measurement of Index Flux Through Saturated Geosynthetic Clay Liner Specimens Using a Flexible Wall Permeameter
D5888 Guide for Storage and Handling of Geosynthetic Clay Liners
D5889 Practice for Quality Control of Geosynthetic Clay Liners
D5890 Test Method for Swell Index of Clay Mineral Component of Geosynthetic Clay Liners
D5891 Test Method for Fluid Loss of Clay Component of Geosynthetic Clay Liners
D5993 Test Method for Measuring Mass Per Unit of Geosynthetic Clay Liners
D5994 Test Method for Measuring Core Thickness of Textured Geomembranes
D6072/D6072M Practice for Obtaining Samples of Geosynthetic Clay Liners
D6243/D6243M Test Method for Determining the Internal and Interface Shear Strength of Geosynthetic Clay Liner by the Direct Shear Method
D6496 Test Method for Determining Average Bonding Peel Strength Between Top and Bottom Layers of Needle-Punched Geosynthetic Clay Liners
D6693 Test Method for Determining Tensile Properties of Nonreinforced Polyethylene and Nonreinforced Flexible Polypropylene Geomembranes
D6768 Test Method for Tensile Strength of Geosynthetic Clay Liners
ISO StandardISO10318 Geosynthetics--Terms and definitions Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
ICS Number Code 91.100.50 (Binders. Sealing materials)
UNSPSC Code 30121900(Soil stabilizers and reinforcing materials)
ASTM D6495-14, Standard Guide for Acceptance Testing Requirements for Geosynthetic Clay Liners, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top