On présente une étude de l'influence de la température sur la surface de charge d'un sol non saturé à succion constante. Des essais de consolidation mécanique sont réalisés à différentes températures sur un sable limoneux argileux. On utilise un appareil triaxial spécifique aux sols non saturés avec des températures comprises entre 30 °C et 60 °C. Les résultats expérimentaux montrent sans ambiguı̈té un caractère thermo-extensif de la surface de charge. L'interprétation physique proposée fait appel à des considérations microscopiques sur l'évolution des ménisques capillaires en fonction de la température et de la succion.
A study of temperature influence on the yield surface for one unsaturated soil at constant suction is presented. Mechanical consolidation tests are realized at different temperatures on clayey silty sand. A specific triaxial apparatus for unsaturated soils with temperatures included between 30 °C and 60 °C is used. Experimental results show without ambiguity a thermo-extensive nature of the yield surface. The physical interpretation proposed calls for microscopic considerations on the menisci capillary evolution according to temperature and suction.
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Keywords: Granular media, Soils, Yield surface, Consolidation, Temperature, Suction
Frédéric Jamin 1 ; Moulay Saı̈d El Youssoufi 1 ; Christian Saix 1
@article{CRMECA_2004__332_2_153_0, author = {Fr\'ed\'eric Jamin and Moulay Sa{\i}\ensuremath{\ddot{}}d El Youssoufi and Christian Saix}, title = {Sur le caract\`ere thermo-extensif de la surface de charge d'un sol non satur\'e}, journal = {Comptes Rendus. M\'ecanique}, pages = {153--159}, publisher = {Elsevier}, volume = {332}, number = {2}, year = {2004}, doi = {10.1016/j.crme.2003.10.007}, language = {fr}, }
TY - JOUR AU - Frédéric Jamin AU - Moulay Saı̈d El Youssoufi AU - Christian Saix TI - Sur le caractère thermo-extensif de la surface de charge d'un sol non saturé JO - Comptes Rendus. Mécanique PY - 2004 SP - 153 EP - 159 VL - 332 IS - 2 PB - Elsevier DO - 10.1016/j.crme.2003.10.007 LA - fr ID - CRMECA_2004__332_2_153_0 ER -
Frédéric Jamin; Moulay Saı̈d El Youssoufi; Christian Saix. Sur le caractère thermo-extensif de la surface de charge d'un sol non saturé. Comptes Rendus. Mécanique, Volume 332 (2004) no. 2, pp. 153-159. doi : 10.1016/j.crme.2003.10.007. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2003.10.007/
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