1. A comparative micromechanical analysis of the effective properties of a geomaterial: Effect of mineralogical compositions
- Author
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Fabrice Cormery, Djimedo Kondo, Ariane Abou-Chakra Guéry, Jian-Fu Shao, Laboratoire Matériaux et Durabilité des constructions (LMDC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire de Mécanique de Lille - FRE 3723 (LML), Université de Lille, Sciences et Technologies-Ecole Centrale de Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)
- Subjects
Calcite ,Experimental validation ,Materials science ,Rock micromechanics ,Geomaterials ,0211 other engineering and technologies ,Mineralogy ,Homogenization schemes ,02 engineering and technology ,Mineral composition ,Geotechnical Engineering and Engineering Geology ,Linear homogenization ,Homogenization (chemistry) ,Computer Science Applications ,chemistry.chemical_compound ,020303 mechanical engineering & transports ,0203 mechanical engineering ,chemistry ,Underground laboratory ,Geotechnical engineering ,Finite element computation ,Quartz ,021101 geological & geomatics engineering - Abstract
International audience; In order to provide a physical interpretation of the variation of the mechanical properties of Callovo-Oxfordian argillite with mineral composition, we implement three linear homogenization schemes. The argillite is modeled as a three phase material composed of a clay matrix and inclusions of quartz and calcite. It is shown that, unlike the dilute scheme and the self-consistent scheme, the Mori-Tanaka model describes the in situ experimental data well. The determined properties are finally used in a finite element computation. The aim is to evaluate the effect of mineral composition on the elastic response of the excavation of a vertical shaft in the context of the underground laboratory of Meuse/Haute Marne.
- Published
- 2010
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