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research article

Anisotropic volumetric behaviour of Opalinus Clay shale upon suction variation

Minardi, Alberto  
•
Crisci, Eleonora  
•
Ferrari, Alessio  
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2016
Geotechnique Letters

Opalinus Clay shale is under consideration to serve as the host geomaterial for the underground storage of nuclear waste in Switzerland. Water retention behaviour and anisotropic behaviour represent two main features of this geomaterial; however, a comprehensive understanding of the interaction between these two aspects is still lacking. This article aims to provide a detailed experimental analysis of the coupling between the water retention capacity and the anisotropic behaviour of two facies (shaly and sandy) of the Opalinus Clay shale. The response of the tested geomaterials is characterized by an unequal swelling and shrinkage response in directions parallel and perpendicular to bedding upon wetting and drying episodes. Although the shaly facies showed a higher volumetric response upon suction change, the anisotropic behaviour is more pronounced for the sandy facies.

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Type
research article
DOI
10.1680/jgele.16.00023
Web of Science ID

WOS:000376169000006

Author(s)
Minardi, Alberto  
Crisci, Eleonora  
Ferrari, Alessio  
Laloui, Lyesse  
Date Issued

2016

Publisher

Ice Publishing

Published in
Geotechnique Letters
Volume

6

Start page

1

End page

5

Subjects

anisotropy

•

strain

•

suction

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMS  
Available on Infoscience
April 15, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/125728
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