Coupled Consolidation and Contaminant Transport in Compressible Porous Media
Publication: International Journal of Geomechanics
Volume 11, Issue 2
Abstract
This paper presents an experimental and numerical investigation of coupled consolidation and contaminant transport in compressible porous media. Numerical simulations were performed using the CST2 computational model, in which a dual-Lagrangian framework is used to separately follow the motions of fluid and solid phases during consolidation. Diffusion and large strain consolidation-induced transport tests were conducted on composite specimens of kaolinite slurry consisting of an upper uncontaminated layer and a lower layer contaminated with potassium bromide. Assessment of the importance of the consolidation process on solute transport is based on measured and simulated solute breakthrough curves and final contaminant concentration profiles. CST2 simulations closely match the experimental data for three different loading conditions. Diffusion and consolidation-induced advection made important contributions to solute transport and mass outflow in this study. Additional simulations indicate that consolidation-induced contaminant transport may also be affected by specimen boundary drainage and initial concentration conditions.
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Acknowledgments
Financial support for this investigation was provided by Grant No. NSFCMMI-1001023 from the Geotechnical Engineering Program of the U.S. National Science Foundation and by a grant from the NOAAU.S. National Oceanic and Atmospheric Administration through the Ohio Sea Grant College Program. This support is gratefully acknowledged.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 11 • Issue 2 • April 2011
Pages: 113 - 123
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 31, 2009
Accepted: Mar 23, 2010
Published online: Mar 25, 2010
Published in print: Apr 1, 2011
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