To further our knowledge of the coupling between the hydraulic cycles and mechanical behavior of treated swelling soils, this Note presents an experimental study on a bentonite/silt mixture treated with lime using a suction controlled osmotic oedometer. Successive wetting and drying cycles were applied at different suction ranges between 0 and 8 MPa, followed by a loading/unloading cycle at different suctions (2, 4 and 8 MPa). The compression curves of the aforementioned suctions provide the necessary information to analyze the influence of hydraulic cycles on the hydromechanical parameters of the treated swelling soils, such as the apparent preconsolidation stress , the virgin compression index and the unloading elastic index value κ. The suction ranges as well as the number of suction cycles influence the mechanical parameters of the treated swelling soil greatly.
Afin de mieux connaître le comportement couplé hydrique et mécanique des sols traités, cet article rapporte les études expérimentales effectuées à l'œdomètre avec imposition de succion par la méthode osmotique sur un mélange de bentonite/limon traité à la chaux. Plusieurs cycles de séchage/humidification compris entre 0 et 8 MPa ont été appliqués sur trois éprouvettes. A la fin des cycles de succion, les courbes de compressibilité pour le sol traité à différentes succions imposées (2, 4 et 8 MPa) permettent de déterminer les différents paramètres mécaniques de sol traité : la pression de préconsolidation , l'indice de compression vierge et l'indice de déchargement élastique κ. La gamme d'imposition de succion ainsi que le nombre de cycles hydriques influencent de manière importante le comportement mécanique des sols traités gonflants.
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Mots-clés : Sols, Sol gonflant, Sol traité, Gonflement, Retrait, Essai cyclique, Œdomètre osmotique
Hossein Nowamooz 1, 2; Farimah Masrouri 1
@article{CRMECA_2010__338_4_230_0, author = {Hossein Nowamooz and Farimah Masrouri}, title = {Volumetric strains due to changes in suction or stress of an expansive bentonite/silt mixture treated with lime}, journal = {Comptes Rendus. M\'ecanique}, pages = {230--240}, publisher = {Elsevier}, volume = {338}, number = {4}, year = {2010}, doi = {10.1016/j.crme.2010.03.011}, language = {en}, }
TY - JOUR AU - Hossein Nowamooz AU - Farimah Masrouri TI - Volumetric strains due to changes in suction or stress of an expansive bentonite/silt mixture treated with lime JO - Comptes Rendus. Mécanique PY - 2010 SP - 230 EP - 240 VL - 338 IS - 4 PB - Elsevier DO - 10.1016/j.crme.2010.03.011 LA - en ID - CRMECA_2010__338_4_230_0 ER -
%0 Journal Article %A Hossein Nowamooz %A Farimah Masrouri %T Volumetric strains due to changes in suction or stress of an expansive bentonite/silt mixture treated with lime %J Comptes Rendus. Mécanique %D 2010 %P 230-240 %V 338 %N 4 %I Elsevier %R 10.1016/j.crme.2010.03.011 %G en %F CRMECA_2010__338_4_230_0
Hossein Nowamooz; Farimah Masrouri. Volumetric strains due to changes in suction or stress of an expansive bentonite/silt mixture treated with lime. Comptes Rendus. Mécanique, Volume 338 (2010) no. 4, pp. 230-240. doi : 10.1016/j.crme.2010.03.011. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2010.03.011/
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