[On the thermo-extensive nature of the yield surface for an unsaturated soil]
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.
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.
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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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