1.1 This test method covers an index method that enables the evaluation of fluid loss properties of a clay mineral film deposited on a filter paper from a 6 % solids slurry of clay mineral at 100-psi (kPa) pressure as a measure of its usefulness for permeability or hydraulic conductivity reduction in geosynthetic clay liners (GCL). This test method is not applicable for clays with polymers.
1.2 This test method is adapted from American Petroleum Institute drilling fluid specifications for bentonite.
1.3 Powdered clay mineral is tested as produced; granular clay mineral should be ground to 100 % passing a 100 mesh U.S. Standard Sieve with a minimum of 65 % passing a 200 mesh U.S. Standard Sieve with the whole ground product used for testing.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.2
1.6 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 D5891/D5891M-19 Referenced Document
ASTM D1193 Standard Specification for Reagent Water
ASTM E1 Standard Specification for ASTM Thermometers
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM E725 Standard Test Method for Sampling Granular Carriers and Granular Pesticides*, 2021-04-01 Update
ASTM D5891/D5891M-19 history
2019ASTM D5891/D5891M-19 Standard Test Method for Fluid Loss of Clay Component of Geosynthetic Clay Liners
2002ASTM D5891/D5891M-02(2016)e1 Standard Test Method for Fluid Loss of Clay Component of Geosynthetic Clay Liners
2002ASTM D5891-02(2009) Standard Test Method for Fluid Loss of Clay Component of Geosynthetic Clay Liners
2002ASTM D5891-02 Standard Test Method for Fluid Loss of Clay Component of Geosynthetic Clay Liners
2001ASTM D5891-01 Standard Test Method for Fluid Loss of Clay Component of Geosynthetic Clay Liners
1995ASTM D5891-95 Standard Test Method for Fluid Loss of Clay Component of Geosynthetic Clay Liners