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PRODID:-//Memento EPFL//
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SUMMARY:Advances in characterization of water retention behaviour of highl
 y expansive clays.
DTSTART:20121211T170000
DTEND:20121211T180000
DTSTAMP:20260428T021656Z
UID:10f1e67125a6f317860a90f031c02d6412802ec9025baf9116d5bed7
CATEGORIES:Conferences - Seminars
DESCRIPTION:A. Seiphoori\, phd student at LMS\nGranular MX-80 bentonite (h
 ighly swelling clay mineral) is going to be used as buffer material in eng
 ineering barrier systems for disposal of high level radioactive wastes. To
  certify the efficiency of waste isolation system\, it is essential to cha
 racterize the thermo-hydro-mechanical response of this material. In this s
 ense\, the new advances in characterization and modeling of soil water ret
 ention behaviour of MX-80 bentonite are presented in this seminar. In orde
 r to precisely obtain the water retention response of highly expansive cla
 ys in terms of void ratio\, temperature and hysteresis of the retention cu
 rve a new experimental technique is\npresented. A micro-structural approac
 h is pointed out in order to specify different roles of suction terms for 
 highly swelling material. Finally\, modeling of soil water retention behav
 iour\, relating the degree of saturation to the matric suction\, is propos
 ed for MX-80 bentonite used in this context.
LOCATION:GC A1 416 http://plan.epfl.ch/?lang=en&room=gca1416
STATUS:CONFIRMED
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