Chapter
Apr 26, 2012
Advances in Geosynthetic Clay Liners: Polymer Enhanced Clays
Authors: G. Di Emidio, Ph.D. [email protected], W. F. Van Impe, and R. D. Verástegui Flores, Ph.D.Author Affiliations
Publication: Geo-Frontiers 2011: Advances in Geotechnical Engineering
Abstract
Bentonite clay is widely used in Geosynthetic Clay Liners (GCLs), because of its elevated sealing capacity in presence of water. However, exposure to high concentrated inorganic solutions can change the clay fabric increasing its hydraulic conductivity. To improve the hydraulic performance of GCLs, a chemical-resistant clay (HYPER clay) was developed through treatment of a natural bentonite with an anionic polymer, Sodium Carboxymethyl Cellulose (Na-CMC). The swelling ability, water adsorption capacity and hydraulic conductivity of the HYPER clay were evaluated. Test results showed the beneficial effect of the anionic-polymer treatment on the swelling, water adsorption and hydraulic performance of the clay.
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Geo-Frontiers 2011: Advances in Geotechnical Engineering
Pages: 1931 - 1940
Copyright
© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Laboratory of Geotechnics, Department of Civil Engineering, Ghent University, Technologiepark 905, 9052 Zwijnaarde.E-mail: [email protected]
W. F. Van Impe
Professor, Laboratory of Geotechnics, Department of Civil Engineering, Ghent University, Technologiepark 905, 9052 Zwijnaarde
R. D. Verástegui Flores, Ph.D.
Laboratory of Geotechnics, Department of Civil Engineering, Ghent University, Technologiepark 905, 9052 Zwijnaarde
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