<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Engineering properties such as compaction, unconfined compressive strength, consistency limits, percentage swell, free swell index, the California bearing ratio and the consolidation of bentonite stabilized with lime and phosphogypsum are presented in this paper. The content of the lime and phosphogypsum varied from 0 to 10 %. The results reveal that the dry unit weight and optimum moisture content of bentonite + 8 % lime increased with the addition of 8 % phosphogypsum. The percentage of swell increased and the free swell index decreased with the addition of 8 % phosphogypsum to the bentonite + 8 % lime mix. The unconfined compressive strength of the bentonite + 8 % lime increased with the addition of 8 % phosphogypsum as well as an increase in the curing period up to 14 days. The liquid limit and plastic limit of the bentonite + 8 % lime increased, whereas the plasticity index remained constant with the addition of 8 % phosphogypsum. The California bearing ratio, modulus of subgrade reaction, and secant modulus increased for the bentonite stabilized with lime and phosphogypsum. The coefficient of the consolidation of the bentonite increased with the addition of 8 % lime and no change with the addition of 8 % phosphogypsum.</p></abstract>

Engineering properties such as compaction, unconfined compressive strength, consistency limits, percentage swell, free swell index, the California bearing ratio and the consolidation of bentonite stabilized with lime and phosphogypsum are presented in this paper. The content of the lime and phosphogypsum varied from 0 to 10 %. The results reveal that the dry unit weight and optimum moisture content of bentonite + 8 % lime increased with the addition of 8 % phosphogypsum. The percentage of swell increased and the free swell index decreased with the addition of 8 % phosphogypsum to the bentonite + 8 % lime mix. The unconfined compressive strength of the bentonite + 8 % lime increased with the addition of 8 % phosphogypsum as well as an increase in the curing period up to 14 days. The liquid limit and plastic limit of the bentonite + 8 % lime increased, whereas the plasticity index remained constant with the addition of 8 % phosphogypsum. The California bearing ratio, modulus of subgrade reaction, and secant modulus increased for the bentonite stabilized with lime and phosphogypsum. The coefficient of the consolidation of the bentonite increased with the addition of 8 % lime and no change with the addition of 8 % phosphogypsum.

Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum

Department of Civil Engineering, National Institute of Technology, Hamirpur – 177005, Himachal Pradesh, India

Department of Civil Engineering, National Institute of Technology, Hamirpur - 177005, Himachal Pradesh, India

Slovak Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum"}

Engineering properties such as compaction, unconfined compressive strength, consistency limits, percentage swell, free swell index, the California bearing...

Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum

Published Online: Feb 06, 2015

Page range: 35 - 44

DOI: https://doi.org/10.2478/sjce-2014-0021

Keywords
Bentonite-lime-phosphogypsum, compaction, consolidation, unconfined compressive strength, California bearing ratio, free swell index

© Faculty of Civil Engineering, Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum

Published Online: Feb 06, 2015

Page range: 35 - 44

DOI: https://doi.org/10.2478/sjce-2014-0021

KeywordsBentonite-lime-phosphogypsum, compaction, consolidation, unconfined compressive strength, California bearing ratio, free swell index

© Faculty of Civil Engineering, Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Bentonite-lime-phosphogypsum, compaction, consolidation, unconfined compressive strength, California bearing ratio, free swell index