Experimental analysis of the cyclic behaviour of kaolin at high temperature / C. Cekerevac in Géotechnique, Vol. 60 N° 8 (Août 2010)  

Public ISBD [article]  inGéotechnique > Vol. 60 N° 8 (Août 2010) . - pp. 651–655 Titre : Experimental analysis of the cyclic behaviour of kaolin at high temperature Type de document : texte imprimé Auteurs : C. Cekerevac, Auteur ; L. Laloui, Auteur Année de publication : 2011 Article en page(s) : pp. 651–655 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Shear strength Liquefaction Clays Laboratory tests Temperature effects Earthquakes Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper presents the results of an experimental study related to thermal effects on kaolin clay cyclic mobility. The thermal effects were identified by comparing the experimental results of cyclic triaxial tests performed at high temperature (90°C) with results of the same type of test carried out at ambient temperature (22°C). For the testing, a new temperature-controlled triaxial apparatus, developed by the authors, was employed. Experimental evidence shows that shear cycles on the heated samples induced smaller axial strain and pore-water pressure per cycle in comparison with the unheated samples. In addition, shear-induced pore-water pressure at large strains in the heated sample was slightly lower than in the unheated sample. In other words, the heated samples behaved as if they were denser, which is a result of thermal hardening. These results may be applied in geotechnical and earthquake engineering applications as a soil improvement technique. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.7.00017 [article] Experimental analysis of the cyclic behaviour of kaolin at high temperature [texte imprimé] / C. Cekerevac, Auteur ; L. Laloui, Auteur . - 2011 . - pp. 651–655. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 60 N° 8 (Août 2010) . - pp. 651–655 Mots-clés : Shear strength Liquefaction Clays Laboratory tests Temperature effects Earthquakes Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper presents the results of an experimental study related to thermal effects on kaolin clay cyclic mobility. The thermal effects were identified by comparing the experimental results of cyclic triaxial tests performed at high temperature (90°C) with results of the same type of test carried out at ambient temperature (22°C). For the testing, a new temperature-controlled triaxial apparatus, developed by the authors, was employed. Experimental evidence shows that shear cycles on the heated samples induced smaller axial strain and pore-water pressure per cycle in comparison with the unheated samples. In addition, shear-induced pore-water pressure at large strains in the heated sample was slightly lower than in the unheated sample. In other words, the heated samples behaved as if they were denser, which is a result of thermal hardening. These results may be applied in geotechnical and earthquake engineering applications as a soil improvement technique. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.7.00017

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