Dependence of elastic properties of argillaceous rocks on moisture content investigated with optical full-field strain measurement techniques
| Autor: | Behrouz Gatmiri, P. Valli, Diansen Yang, H. Gharbi, S. Chanchole, Michel Bornert |
|---|---|
| Přispěvatelé: | Laboratoire de mécanique des solides (LMS), École polytechnique (X)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Modélisation et expérimentation multi-échelle pour les solides hétérogènes (multi-échelle), Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS), Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA) |
| Rok vydání: | 2012 |
| Předmět: |
Digital image correlation
Materials science 0211 other engineering and technologies Hydration Modulus 02 engineering and technology [SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] Multiscale DIC 010502 geochemistry & geophysics 01 natural sciences Stress (mechanics) Argillite Linear behaviour [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] Relative humidity Geotechnical engineering 021101 geological & geomatics engineering 0105 earth and related environmental sciences Shrinkage Moisture Humidity Geotechnical Engineering and Engineering Geology 13. Climate action Heterogeneity Deformation (engineering) Shrinkage and swelling |
| Zdroj: | International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, Pergamon and Elsevier, 2012, 53, pp.45-55. ⟨10.1016/j.ijrmms.2012.04.004⟩ |
| ISSN: | 1365-1609 0148-9062 1879-2073 |
| DOI: | 10.1016/j.ijrmms.2012.04.004 |
| Popis: | International audience; The mechanical behaviour of the argillaceous rock considered in France as a potential host rock for nuclear waste repository strongly depends on water content. In order to quantify the dependence of the mechanical properties on humidity, an experimental setup that combines hydromechanical loadings with optical observations and digital image correlation (DIC) has been developed. It allows investigation of the hydromechanical behaviour of a material from the sample scale (cm) down to micrometric scale (100 mu m). Using this system, the shrinkage and swelling properties of the argillaceous rock at various constant uniaxial stresses, and the linear mechanical behaviour of the material at different moisture levels, were experimentally studied. A quasi-linear relation between the relative humidity, ranging from 39% to 85%, and the deformation during dehydration and rehydration is found at both the sample scale (cm), and a mesoscopic scale of a few hundred micrometres. This relation depends on the applied stress with much less swelling at higher axial compressive stress. In addition, a linear decrease of the axial Young's modulus (normal to bedding plane) with an increase of the relative humidity is observed. (C) 2012 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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