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Mise au point d'un dispositif expérimental pour l'analyse du retrait-gonflement des sols argileux

Abstract : The paper presents a new experimental device, which can be incorporated in an Environmental Scanning Electron Microscope (ESEM). It allows to measure simultaneously the evolution of the surface strain of clayey aggregates and the evolution of their water content. The initial state of samples is in powder form, what allows making a complete cycle of wetting-drying in 24 hours, faster than the classic tests at the mesoscopic scale. The obtained results seem dissociate homogeneous and/or 'industrial' clays than heterogeneous natural clays with the evolution of their surface strain and their water content. These observations allow to envisage concrete applications such as the correlation of the collapses of a massif with the profiles of evolution of the water content (function of the depth) or the optimization of the choice of bentonites used for the sealings of the storages of radioactive waste.
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Submitted on : Friday, April 4, 2014 - 2:12:29 PM
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  • HAL Id : ineris-00973706, version 1
  • INERIS : EN-2013-268

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Tatiana Maison, Farid Laouafa, Patrice Delalain. Mise au point d'un dispositif expérimental pour l'analyse du retrait-gonflement des sols argileux. 18. International Conference on Soil Mechanics and Geotechnical Engineering "Challenges and innovations in geotechnics" (ICSMGE), Sep 2013, Paris, France. pp.247-250. ⟨ineris-00973706⟩

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