Experimental Investigation of Hydromechanical Coupling During Clay Drying

[en] Boom clay is studied as a potential host rock for underground nuclear waste storage. This experimental work analyzes its response under the convective drying conditions that may be applied in case of contact with the ambient atmosphere (during disposal drilling, for instance) or with gallery ventilation (because of damage in gallery lining). The drying kinetics is ﬁrst established. In a second phase, the cracking and shrinkage onset and development are focused on, thanks to an X-ray microtomography device. The results show a phase of ideal shrinkage and a phase of shrinkage with desaturation, which are closely related to the kinetics. Cracking and shrinkage progressively develop from the drying surface, up to values representing about 3 and 12% of the cross section area, respectively.

Disciplines :

Civil engineering
Chemical engineering
Materials science & engineering

Author, co-author :

Prime, Noémie; Université de Liège - ULiège > ArGEnCo > Géomécanique et géologie de l'ingénieur

Fraikin, Laurent ; Université de Liège > Department of Chemical Engineering > Génie chimique - Procédés et développement durable

Léonard, Angélique ; Université de Liège > Department of Chemical Engineering > Génie chimique - Procédés et développement durable

Charlier, Robert ; Université de Liège > Département ArGEnCo > Géomécanique et géologie de l'ingénieur

Levasseur, Séverine ; ONDRAF

Language :

English

Title :

Experimental Investigation of Hydromechanical Coupling During Clay Drying

Publication date :

2015

Journal title :

Drying Technology

ISSN :

0737-3937

eISSN :

1532-2300

Publisher :

Taylor and Francis, New York, United States - New York

Volume :

Issue :

15-16

Pages :

1821-1829

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://dx.doi.org/10.1080/07373937.2015.1030030

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique

Available on ORBi :

since 07 January 2016

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