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Influence of hydraulic hysteresis on effective stress in unsaturated soils / N. Khalili in Géotechnique, Vol. 60 N° 9 (Septembre 2010) 

Public ISBD [article]  in Géotechnique > Vol. 60 N° 9 (Septembre 2010) . - pp. 729–734 Titre : Influence of hydraulic hysteresis on effective stress in unsaturated soils Type de document : texte imprimé Auteurs : N. Khalili, Auteur ; S. Zargarbashi, Auteur Année de publication : 2011 Article en page(s) : pp. 729–734 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Laboratory  tests  Shear  strength  Suction  Partial  saturation Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : In this note, results from a careful programme of experimental research are presented examining the variation of the effective stress parameter along main drying and wetting paths and in transition from drying to wetting. Both dimensional and non-dimensional representations of the results are discussed and the general trends observed are highlighted. A simple model is presented for the quantification of the contribution of suction to the effective stress of the solid skeleton including the hysteresis effects due to wetting and drying. In addition, it is shown that the degree of saturation may not be a suitable candidate as the effective stress parameter for such quantification. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.09.t.009 [article] Influence of hydraulic hysteresis on effective stress in unsaturated soils [texte imprimé] / N. Khalili, Auteur ; S. Zargarbashi, Auteur . - 2011 . - pp. 729–734. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 60 N° 9 (Septembre 2010) . - pp. 729–734 Mots-clés : Laboratory  tests  Shear  strength  Suction  Partial  saturation Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : In this note, results from a careful programme of experimental research are presented examining the variation of the effective stress parameter along main drying and wetting paths and in transition from drying to wetting. Both dimensional and non-dimensional representations of the results are discussed and the general trends observed are highlighted. A simple model is presented for the quantification of the contribution of suction to the effective stress of the solid skeleton including the hysteresis effects due to wetting and drying. In addition, it is shown that the degree of saturation may not be a suitable candidate as the effective stress parameter for such quantification. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.09.t.009