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Influence de la variation cyclique de la température sur les paramètres pressiométriques de sols compactés

Abstract : In geotechnical engineering, the proper design of thermo-active geostructures requires a better understanding of the thermo-hydro-mechanical behaviour of natural and compacted soils. For design purposes, mechanical parameters are usually obtained by pressuremeter in-situ tests. In the present study, mini-pressuremeter tests were conducted in laboratory to characterise compacted soils. The objective was to examine and quantify the influence of temperature cyclic changes on pressuremeter parameters of two different compacted soils. A heating-cooling cycle (20-40-20 °C) was applied to a clayey compacted soil, and three heating-cooling cycles (20-50 °C) were applied to a compacted loam. The obtained results showed a decrease in limit pressure (Pl) and creep pressure (Pf) with increasing temperature for both tested soils, while the variation of the pressuremeter modulus (EM) was less significant. Through the temperature range tested, a reversibility of the effect of a heating cycle is obtained. These results were quite similar for both studied materials and the application of several thermal cycles did not modify the reversibility of the evolution.
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Contributor : Sandrine Rosin-Paumier <>
Submitted on : Monday, June 18, 2018 - 9:35:28 AM
Last modification on : Monday, March 29, 2021 - 4:03:10 PM
Long-term archiving on: : Wednesday, September 19, 2018 - 3:44:29 PM


19th ICSMGE_Full Paper Rosin-P...
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  • HAL Id : hal-01817496, version 1



S. Rosin-Paumier, Ahmed Boukelia, Hossein Eslami, Farimah Masrouri. Influence de la variation cyclique de la température sur les paramètres pressiométriques de sols compactés. 19th International Conference on Soil Mechanics and Geotechnical Engineering, Sep 2017, Seoul Corée du Sud. ⟨hal-01817496⟩



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