Mohd Yunus, NZ, Wanatowski, D orcid.org/0000-0002-5809-0374, Marto, A et al. (1 more author) (2017) Strength improvement of lime-treated clay with sodium chloride. Geotechnical Research, 4 (4). pp. 192-202. ISSN 2052-6156
Abstract
Lime stabilisation of organic clay has often been studied in the past. However, there is some evidence in the literature that the presence of high concentrations of organic matter in clay soil can lessen the chemical reaction between lime and clay minerals and can have detrimental effects on the engineering properties of soil. Hence, in this paper, the stress–strain behaviour and strength properties of organic soil treated with lime and sodium chloride (NaCl) are analysed. A soil mixture, prepared with 5% lime content and 1·5% humic acid, was stabilised with varying quantities of sodium chloride (0·5, 2·0 and 5·0%). Consolidated undrained and drained triaxial tests were carried out on specimens at curing periods of 7 and 28 d with applied confining pressures of 50 and 100 kPa. Scanning electron microscopy and X-ray diffraction analysis were used to observe the microstructural changes resulting from cementation materials. It was found that the introduction of sodium chloride improved considerably the strength properties of the lime-treated organic clay. The microstructural analysis also confirmed the presence of calcium silicate hydrate in a salt-treated organic clay, which was the main contributing factor to the enhanced engineering properties of the clay.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Published with permission by the ICE under the CC-BY 4.0 license, which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | geotechnical engineering, materials technology, strength & testing of materials |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Nov 2017 12:55 |
Last Modified: | 23 Jun 2023 22:39 |
Status: | Published |
Publisher: | Thomas Telford (ICE Publishing) |
Identification Number: | 10.1680/jgere.17.00001 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:124242 |