| Issue |
E3S Web of Conf.
Volume 544, 2024
8th International Symposium on Deformation Characteristics of Geomaterials (IS-Porto 2023)
|
|
|---|---|---|
| Article Number | 05002 | |
| Number of page(s) | 5 | |
| Section | Experimental Investigations From Very Small Strains to Beyond Failure - Multiscale Problems in Geomechanics (Micro-to-Macro Strains) | |
| DOI | https://doi.org/10.1051/e3sconf/202454405002 | |
| Published online | 02 July 2024 | |
Hydromechanical characterization of the behaviour of Chateau-Landon chalk
1 National Institute for Industrial Environment and Risks, Verneuil-en-Halatte, France
2 Laboratory of Multiscale Multiphysics Mechanics, LaMcube, UMR9013 CNRS, Lille, France
* Corresponding author: Danielle-rita.PAJIEP-NGONGANG@ineris.fr
This paper presents an experimental investigation on the hydromechanical behaviour of a partially saturated soft rock (a porous chalk), the Chateau-Landon chalk. Such conditions correspond to those of a chalk mine known as Royer located in the North-centre of France in Paris basin, subjected to shrinking, drying and potential flooding cycles. To study this rock, we apply a method usually used in soils whose hydromechanical behaviour is strongly modified by changes in suction, according to the degree of water saturation. Different degrees of saturation are imposed by controlled relative humidity conditions with continuous measurement of physical parameters. Hydrostatic compression and conventional triaxial compression tests are performed under drained conditions for saturation degrees up to 100% under low confining pressures. The obtained results have allowed to show fundamental aspects of the chalk behaviour. Correlations between water saturation degree, confining pressure and the mechanical behaviour of the chalk are discussed.
Key words: Porous chalk / Hydromechanical behaviour / Water saturation
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.