Tiago Gaspar tiago.gaspar@durham.ac.uk
Academic Visitor
The mechanical properties of a high plasticity expansive clay
Gaspar, T.A.V.; Jacobsz, S.W.; Heymann, G.; Toll, D.G.; Gens, A.; Osman, A.S.
Authors
S.W. Jacobsz
G. Heymann
Professor David Toll d.g.toll@durham.ac.uk
Professor
A. Gens
Professor Ashraf Osman ashraf.osman@durham.ac.uk
Professor
Abstract
The mechanical properties of a high plasticity expansive clay from South Africa are reported. The experimental programme considered wetting after loading tests followed by one-dimensional consolidation and unloading of undisturbed and statically compacted samples. The results of this study illustrate that laboratory preparation of expansive clays do little to alter the soil’s swell characteristics. This finding is attributed to the fact that, due to numerous swelling and shrinking cycles over a geological time frame, expansive clays tend to have reworked fabric in-situ. The effects of structure are also assessed in both undisturbed and compacted specimens by comparison of the various consolidation tests with that of a reconstituted sample. The results illustrate a gradual yielding process for both undisturbed and compacted specimens, indicating progressive disruption of structure. After consoli- dation, while the expansion indices were found to be similar for both compacted and undisturbed samples, measured values were lower than that of the reconstituted specimen. Such a result is indicative of some pres- ervation of structure after testing. It is also emphasised that consolidation tests on expansive clays are likely to exist in structure permitted space if swelling strains are restricted during the inundation process. Conversely, for most results presented it is seen that the swell caused by the inundation phase is approximately as disruptive to structure as laboratory preparation and compaction.
Citation
Gaspar, T., Jacobsz, S., Heymann, G., Toll, D., Gens, A., & Osman, A. (2022). The mechanical properties of a high plasticity expansive clay. Engineering Geology, 303, https://doi.org/10.1016/j.enggeo.2022.106647
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 24, 2022 |
Online Publication Date | Apr 6, 2022 |
Publication Date | 2022 |
Deposit Date | May 9, 2022 |
Publicly Available Date | May 9, 2022 |
Journal | Engineering Geology |
Print ISSN | 0013-7952 |
Electronic ISSN | 1872-6917 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 303 |
DOI | https://doi.org/10.1016/j.enggeo.2022.106647 |
Public URL | https://durham-repository.worktribe.com/output/1208914 |
Files
Published Journal Article
(1.5 Mb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
Copyright Statement
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
You might also like
Prediction of resilient modulus of unsaturated soils considering inter-particle suction bonding
(2024)
Presentation / Conference Contribution
A Field Study on the Stability of Road Cut Slopes in Nepal
(2024)
Presentation / Conference Contribution
Soil–Water Retention Curve Prediction for Compacted London Clay Subjected to Moisture Cycles
(2023)
Journal Article
A simple method to determine soil–water retention curves of compacted active clays
(2023)
Journal Article
An Apparatus to Monitor Suction Evolution and Water Migration within a Soil Mass for Climate-Adaptive Infrastructure
(2023)
Presentation / Conference Contribution
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2025
Advanced Search