ASTM D6766-20a
Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Aqueous Solutions

Standard No.

ASTM D6766-20a

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D6766-20a

Scope

1.1 This test method covers laboratory measurement of both flux and hydraulic conductivity (also referred to as coeffıcient of permeability) of geosynthetic clay liner (GCL) specimens permeated with chemical solutions and leachates utilizing a flexible wall permeameter. For test measurement of index hydraulic properties of geosynthetic clay liners, refer to Test Method D5887/D5887M. For hydraulic conductivity compatibility of soils with aqueous chemical solutions and leachates, refer to Test Method D7100. 1.2 This test method may be utilized with GCL specimens that have a hydraulic conductivity less than or equal to 1 × 10–5 m ⁄s (1 × 10–3 cm/s). 1.3 This test method is applicable to GCL products having geotextile backing(s). It is not applicable to GCL products with geomembrane backing(s), geofilm backing(s), or polymer coating backing(s). 1.4 This test method allows the requester to evaluate the hydraulic properties of a GCL with site-specific or laboratoryprepared solution under different test conditions; thus, the test method also may be used to check performance or conformance, or both. 1.5 The values stated in SI units are to be regarded as the standard, unless other units are specifically given. By tradition in U.S. practice, hydraulic conductivity is reported in centimeters per second, although the common SI units for hydraulic conductivity are meters per second. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D6766-20a Referenced Document

• ASTM D2216 Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
• ASTM D4439 Standard Terminology for Geosynthetics*， 2024-02-01 Update
• ASTM D4753 Standard Specification for Evaluating, Selecting, and Specifying Balances and Scales for Use in Soil, Rock, and Construction Materials Testing
• ASTM D5887/D5887M Standard Test Method for Measurement of Index Flux Through Saturated Geosynthetic Clay Liner Specimens Using a Flexible Wall Permeameter*， 2023-11-01 Update
• ASTM D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids
• ASTM D7100 Standard Test Method for Hydraulic Conductivity Compatibility Testing of Soils with Aqueous Solutions
• ASTM D854 Standard Test Methods for Specific Gravity of Soil Solids by the Water Displacement Method*， 2023-11-01 Update
• ASTM E145 Standard Specification for Gravity-Convection And Forced-Ventilation Ovens

ASTM D6766-20a history

• 2020 ASTM D6766-20a Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Aqueous Solutions
• 2020 ASTM D6766-20 Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Aqueous Solutions
• 2018 ASTM D6766-18 Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Aqueous Solutions
• 2012 ASTM D6766-12 Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Aqueous Solutions
• 2009 ASTM D6766-09 Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Liquids
• 2006 ASTM D6766-06a Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Liquids
• 2006 ASTM D6766-06 Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Liquids
• 2002 ASTM D6766-02 Standard Test Method for Evaluation of Hydraulic Properties of Geosynthetic Clay Liners Permeated with Potentially Incompatible Liquids