000190800 001__ 190800
000190800 005__ 20180913062149.0
000190800 037__ $$aPOST_TALK
000190800 245__ $$aAn Innovative Technique for Water Retention Characterization of Highly Swelling Geomaterials
000190800 269__ $$a2013
000190800 260__ $$c2013
000190800 336__ $$aPosters
000190800 520__ $$aThis paper presents an innovative method called Micro-cell technique to obtain the water retention curves of geomaterials particularly highly swelling clays such as MX-80 bentonite. This method is based on the controlled water content and measured suction using a dew-point potentiometer system. The method allows obtaining the water retention of swelling material with high precision and reproducibility using the same specimen for the whole wetting and drying cycles. The influence of void ratio, temperature, and the hysteresis effects on the retention behaviour of particular clay minerals can be successfully investigated using this technique. The cell has been deisgned to provide the possibility of freeze-drying of the specimen directly inside for performing Mercury Intrusion Porosimetry (MIP). This feature allows the investigation of microstructural characteristics under a given swelling pressure and avoids porosity changes due to stress release. An application of this methodology is presented in order to study the water retention behaviour of MX-80 granular bentonite used in Swiss concept of high-level nuclear waste storage.
000190800 6531_ $$aMicro-cell technique
000190800 6531_ $$ahighly swelling geomaterials
000190800 6531_ $$awater retention behaviour
000190800 6531_ $$awetting/drying cycles
000190800 700__ $$0242689$$aSeiphoori, Ali$$g201460
000190800 700__ $$0242683$$aFerrari, Alessio$$g178175
000190800 700__ $$0240226$$aLaloui, Lyesse$$g105611
000190800 7112_ $$aInternational Workshop on Geomechanics and Energy$$cLausanne, Switzerland$$dNovember 26-28, 2013
000190800 8564_ $$uhttp://www.earthdoc.org/publication/publicationdetails/?publication=71992$$zURL
000190800 909C0 $$0252080$$pLMS$$xU10264
000190800 909CO $$ooai:infoscience.tind.io:190800$$pposter$$pENAC
000190800 917Z8 $$x201460
000190800 937__ $$aEPFL-POSTER-190800
000190800 973__ $$aEPFL
000190800 980__ $$aPOSTER