Centrifuge Modeling of Geosynthetic Reinforced Clay Liners of Landfills
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 5
Abstract
Imperviousness of clay liners is essential in landfills in order to safeguard the environment from contamination. To accomplish this task, the behavior of clay liner of landfills with and without reinforcement inclusion has been explored by carrying out controlled in-flight simulation of nonuniform settlements of landfill in a geotechnical centrifuge using a trap-door arrangement. The reinforcement ability of geosynthetic materials such as geogrid is used to control the crack propagation and permeability of clay liner even at large settlement differences. Centrifuge model test results demonstrate a potential of reinforced clay liners to retain its integrity without significant cracking and crack propagation. Test results have shown that a geogrid layer that is placed within the top portion of the clay liner restrains cracking and enhances the sealing efficiency due to soil–geogrid frictional resistance. The adoption of geosynthetic reinforced clay liner (GRCL) provides an ideal solution for enhancing the deformation capacity. The GRCLs are a promising barrier material for situations in which nonuniform settlements are expected, for example, in landfill capping systems.
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Acknowledgments
The writers wish to acknowledge German Academic Exchange Service (DAAD), Bonn, Germany for supporting the first writer on a DAAD fellowship. Acknowledgments are also due to M/s Huesker GmbH, M/s Tenax Kunstoffe GmbH, and M/s Lux GmbH of Germany for supplying model geogrids. The contributions of the reviewers are gratefully acknowledged.
References
American Society of Testing and Materials (ASTM). (1995). ASTM standards on Geosynthetics, 4th Ed., ASTM, West Conshohocken, Pa.
Christie, I. F., and El Hadi, K. M. (1977). “Some aspects of the design of earth dams reinforced with fabric,” Proc. C.R. Colloid Interface Soils Textiles, Paris, 99–103.
Druschel, S. J., and Wardwell, R. E. (1991). “Impact of long term landfill deformation,” Proc. Geotech. Engrg. Congress, Geotechnical Specialist Publication No. 27, ASCE, Reston, Va., 1268–1279.
Edelmann, L., and Katzenbach, R. (1996). “Verformbarkeit mineralischer Deponiebarrieren im Großversuch,” 12. Nürenberger Deponieseminar, Nürenberg, 75, 131–151 (in German).
Jackson, A. M. R., and Craig, W. H. (1998). “Modeling vertical geosynthetic reinforcement of soil slopes.” Proc. of Centrifuge ’98, Tokyo, 753–759.
Jessberger, H. L. (1995). “Waste containment with compacted clay liners.” Proc., Geoenvironment 2000. Geotechnical Special Publication 46, Vol. 1, ASCE, New York, 463–483.
Jessberger, H. L., and Güttler, U. (1988). “Bochum geotechnical centrifuge,” Proc. Centrifuge’88, Paris, 37–44.
Jessberger, H. L., and Stone, K. J. L. (1991). “Subsidence effects on clay barriers.” Geotechnique, 41(2), 185–194.
Lee, K. L., and Shen, C. K. (1969). “Horizontal movements related to subsidence.” J. Soil Mech. Found. Div., 95(1), 139–166.
Landesamt für Wasser und Abfall (LWA) Instructions (1993). “Mineralische deponiabdichtungen,” North-Rhine Westfalia Abfallwirtshaft (NRW), Richtlinie Nr. 18, Düssseldorf: Schriftenreihe des Landesumweltesamtes NRW. 59 (in German).
Ling, H. I., Leschinsky, D., Mohri, Y., and Kawabata, T. (1998). “Estimation of municipal solid waste landfill settlement.” J. Geotech. Geoenviron. Eng., 124(1), 21–28.
Meißner, H., and Ringelb, D. (1987). “Oberflächenabdichtung beansprucht durch Setzungsunterschiede bei der Deponie Weilbach.” Proc., Symp., Deponiebauwerke, Frankfurt, Germany, 294–320 (in German).
Mitchell, J. K., Jaber, M., Shen, C. K., and Hua, Z. K. (1988). “Behaviour of reinforced soil walls in centrifuge model tests.” Proc. Centrifuge ’88, Paris, 259–271.
Oweis, I. S., and Khera, R. P. (1990). Geotechnology of waste management, Butterworth, London, 242–247.
Porbaha, A., and Goodings, D J., (1994). “Geotextile reinforced cohesive slopes on weak foundations.” Proc. Centrifuge ’94, Singapore, 623–628.
Scherbeck, R., and Jessberger, H. L. (1993). “Assessment of deformed mineral sealing layers.” Proc. Green ’93, Manchester, England, 477–486.
Springman, S., Bolton, M., Sharma, J., and Balachandran, S. (1992). “Modeling and instrumentation of a geotextile in the geotechnical centrifuge.” Proc., Earth Reinforcement Practice, Fukuoka, Japan, 167–172.
Sterling, H. J., and Ronayne, M. C. (1985). Simulating landfill cover subsidence. Proc., 11th Annual Research Symp. on Land Disposal of Hazardous Waste, United States Environmental Protection Agency, Cincinnati, 236–244.
Viswanadham, B. V. S. (1996). “Geosynthetic reinforced mineral sealing layers of landfills.” PhD dissertation, Ruhr Univ., Bochum, Germany.
Zornberg, J. G., Mitchell, J. K., and Sitar, N. (1997). “Testing of reinforced slopes in a geotechnical centrifuge.” Geotech. Test. J., 20(4), 470–480.
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© 2005 ASCE.
History
Received: Feb 29, 2000
Accepted: Jul 7, 2004
Published online: May 1, 2005
Published in print: May 2005
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