Skip to Main content Skip to Navigation
Journal articles

Thermo-mechanical behaviour of a compacted swelling clay

Abstract : Compacted unsaturated swelling clay is often considered as a possible buffer material for deep nuclear waste disposal. An isotropic cell permitting simultaneous control of suction, temperature and pressure was used to study the thermo-mechanical behaviour of this clay. Tests were performed at total suctions ranging from 9 to 110 MPa, temperature from 25 to 80 °C, isotropic pressure from 0.1 to 60 MPa. It was observed that heating at constant suction and pressure induces either swelling or contraction. The results from compression tests at constant suction and temperature evidenced that at lower suction, the yield pressure was lower, the elastic compressibility parameter and the plastic compressibility parameter were higher. On the other hand, at a similar suction, the yield pressure was slightly influenced by the temperature; and the compressibility parameters were insensitive to temperature changes. The thermal hardening phenomenon was equally evidenced by following a thermo-mechanical path of loading-heating-cooling-reloading.
Complete list of metadata

Cited literature [39 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00250248
Contributor : Yu-Jun Cui Connect in order to contact the contributor
Submitted on : Monday, February 11, 2008 - 2:09:36 PM
Last modification on : Friday, March 19, 2021 - 9:36:04 AM
Long-term archiving on: : Monday, May 17, 2010 - 4:30:39 PM

File

TangCuiBarnel-Geotechnique_HAL...
Files produced by the author(s)

Identifiers

Citation

Anh Minh Tang, Yu-Jun Cui, Nathalie Barnel. Thermo-mechanical behaviour of a compacted swelling clay. Geotechnique, Thomas Telford, 2008, 58 (1), pp.45-54. ⟨10.1680/geot.2008.58.1.45⟩. ⟨hal-00250248⟩

Share

Metrics

Record views

542

Files downloads

490