Abstract
Testing shows that many of the present commercially available bentonite products used for clay liner/soil sealant applications may be susceptible to chemical degradation by certain contaminants. Testing also confirms that a recently developed contaminant resistant clay (CRC) is resistant to various contaminants that would otherwise attack and degrade the present commercially available products. The tests that were used to determine its effectiveness were American Petroleum Institute (API) fluid loss, rigid wall hydraulic conductivity, flexible wall hydraulic conductivity and a newly developed top loading filter press (TLFP) test (LSK method).
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References
American Colloid Company. 1990. Free swell determination procedure ACC 1010.
American Petroleum Institute. 1993. Method for measurement of fluid loss. API Procedure 13A, Section 4. p 16–17.
American Society for Testing and Materials. 1990. ASTM D698. Test method for laboratory compaction characteristics of soil using standard effort (12,400 ft-1bf/ft3) (600 kN-m/m3), vol 04.08.
American Society for Testing and Materials. 1990. ASTM D5084-90. Test method for hydraulic conductivity of saturated porous materials using a flexible wall permeameter, vol 04.08.
American Society for Testing and Materials. 1974. ASTM D2434-68. Test method for permeability of granular soils (Constant Head), vol 04.08.
Dobras TN, Elzea JM. 1993. In-situ soda ash treatment for contaminated geosynthetic clay liners. Geosynthetics ’93: 1145–1159.
Egloffstein T. 1994. Properties and test methods to assess bentonite used in geosynthetic clay liners. In: Koerner RM, Gattung E, Zanzinger H, editors. Geosynthetic clay liners. Rotterdam, Netherlands: AA Balkema. p 51–72.
Geosynthetic Research Institute. 1993. GRI test method GCL-2. January 22, 1993. Permeability of geosynthetic clay liners (GCLs). p 1–3.
Rogers WF. 1963. Composition and properties of oil well drilling fluids. Houston, TX: Gulf Publ Co. 807 p.
Ruhl JL. 1994. Effects of leachates on the hydraulic conductivity of geosynthetic clay liners (GCLs). Austin, TX: Univ TX at Austin. 225 p.
Trauger R. 1996. GCL case study technical data sheet: CET-CO’s contaminant resistant clay (CRC). Arlington Heights, IL: Colloid Environ Technol Co. 1 p.
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Kajita, L.S. An Improved Contaminant Resistant Clay for Environmental Clay Liner Applications. Clays Clay Miner. 45, 609–617 (1997). https://doi.org/10.1346/CCMN.1997.0450501
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DOI: https://doi.org/10.1346/CCMN.1997.0450501