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Compressive Modulus of Soil-Bentonite Mixtures for Cutoff Walls from CPTU Data

Li, Xue P. / Cai, Guo J. / Liu, Song Y. / Lin, Jun / Puppala, Anand J.

Soil-bentonite backfills (SBB) have been widely used in geotechnical engineering applications to control the migration of contaminants in the subsurface. As an essential parameter, the compressive modulus (E_s) impacts the stress-state behavior of the consolidated backfills, which influences hydraulic conductivity. It is therefore important to estimate the E_s value of cutoff wall in landfill site. The compressibility of SBB is characterized by piezocone penetration tests (CPTU). In this study, a landfill site in Jiangsu Province of China was selected to predict the compressive modulus of SBB. Nine CPTU soundings were carried out at different locations in cutoff wall. Based on the CPTU data, the compressive modulus can be calculated using different methods. The values of E_s were then compared with the results of high-quality laboratory tests and they correlated well. This study confirms the potential for use of CPTU to obtain valid predictions for compressive modulus of soils in cutoff wall.

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Compressive Modulus of Soil-Bentonite Mixtures for Cutoff Walls from CPTU Data

Li, Xue P. / Cai, Guo J. / Liu, Song Y. / Lin, Jun / Puppala, Anand J.

Soil-bentonite backfills (SBB) have been widely used in geotechnical engineering applications to control the migration of contaminants in the subsurface. As an essential parameter, the compressive modulus (E_s) impacts the stress-state behavior of the consolidated backfills, which influences hydraulic conductivity. It is therefore important to estimate the E_s value of cutoff wall in landfill site. The compressibility of SBB is characterized by piezocone penetration tests (CPTU). In this study, a landfill site in Jiangsu Province of China was selected to predict the compressive modulus of SBB. Nine CPTU soundings were carried out at different locations in cutoff wall. Based on the CPTU data, the compressive modulus can be calculated using different methods. The values of E_s were then compared with the results of high-quality laboratory tests and they correlated well. This study confirms the potential for use of CPTU to obtain valid predictions for compressive modulus of soils in cutoff wall.

Compressive Modulus of Soil-Bentonite Mixtures for Cutoff Walls from CPTU Data

Li, Xue P. / Cai, Guo J. / Liu, Song Y. / Lin, Jun / Puppala, Anand J.

Soil-bentonite backfills (SBB) have been widely used in geotechnical engineering applications to control the migration of contaminants in the subsurface. As an essential parameter, the compressive modulus (E_s) impacts the stress-state behavior of the consolidated backfills, which influences hydraulic conductivity. It is therefore important to estimate the E_s value of cutoff wall in landfill site. The compressibility of SBB is characterized by piezocone penetration tests (CPTU). In this study, a landfill site in Jiangsu Province of China was selected to predict the compressive modulus of SBB. Nine CPTU soundings were carried out at different locations in cutoff wall. Based on the CPTU data, the compressive modulus can be calculated using different methods. The values of E_s were then compared with the results of high-quality laboratory tests and they correlated well. This study confirms the potential for use of CPTU to obtain valid predictions for compressive modulus of soils in cutoff wall.

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Title:

Compressive Modulus of Soil-Bentonite Mixtures for Cutoff Walls from CPTU Data

Contributors:

Li, Xue P. (author) / Cai, Guo J. (author) / Liu, Song Y. (author) / Lin, Jun (author) / Puppala, Anand J. (author)

Conference:

Geo-Chicago 2016 ; 2016 ; Chicago, Illinois

Published in:

Geo-Chicago 2016 ; 528-536

Publication date:

2016-08-08

ISBN:

DOI:

https://doi.org/10.1061/9780784480144.052

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

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