X-ray microtomography for studying localized deformation in fine-grained geomaterials under triaxial compressionUtilisation de la microtomographie rayon X pour l'étude de la localisation des déformations dans les géomatériaux argileux sous sollicitation axisymétrique. |
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| Authors: | Gioacchino Viggiani Nicolas Lenoir Pierre Bésuelle Marco Di Michiel Stefania Marello Jacques Desrues Mogens Kretzschmer |
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| Institution: | 1. Laboratoire 3S, UJF–INPG–CNRS, UMR 5521, BP 53, 38041 Grenoble, France;2. Agence nationale pour la gestion des déchets radioactifs (ANDRA), Châtenay–Malabry, France;3. European Synchrotron Radiation Facility, BP 220, 38043 Grenoble, France |
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| Abstract: | This Note presents a few selected results of an experimental testing program carried out at the ESRF in Grenoble, France. X-ray microtomography (with a spatial resolution of 14 μm) has been used to evaluate the onset and evolution of shear banding in a fine-grained stiff soil under deviatoric loading. It allowed detailed observations of strain localization in a specimen during the test, including the presence of more than one shear zone and a varying degree of dilatancy and/or crack opening. To cite this article: G. Viggiani et al., C. R. Mecanique 332 (2004). |
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| Keywords: | Soils Shear bands X-rays Computed tomography Clays Experimental measurements Sols Bandes de cisaillement Rayons X Tomographie Argiles Mesures expérimentales |
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