Advances in characterization of water retention behaviour of highly expansive clays.
Event details
| Date | 11.12.2012 |
| Hour | 17:00 › 18:00 |
| Speaker | A. Seiphoori, phd student at LMS |
| Location | |
| Category | Conferences - Seminars |
Granular MX-80 bentonite (highly swelling clay mineral) is going to be used as buffer material in engineering barrier systems for disposal of high level radioactive wastes. To certify the efficiency of waste isolation system, it is essential to characterize the thermo-hydro-mechanical response of this material. In this sense, the new advances in characterization and modeling of soil water retention behaviour of MX-80 bentonite are presented in this seminar. In order to precisely obtain the water retention response of highly expansive clays in terms of void ratio, temperature and hysteresis of the retention curve a new experimental technique is
presented. A micro-structural approach is pointed out in order to specify different roles of suction terms for highly swelling material. Finally, modeling of soil water retention behaviour, relating the degree of saturation to the matric suction, is proposed for MX-80 bentonite used in this context.
presented. A micro-structural approach is pointed out in order to specify different roles of suction terms for highly swelling material. Finally, modeling of soil water retention behaviour, relating the degree of saturation to the matric suction, is proposed for MX-80 bentonite used in this context.
Practical information
- General public
- Registration required
Organizer
- EPFL-ENAC-LMS
Contact
- Prof. Laloui, EPFL-ENAC-LMS