Hydraulic conductivity and compressibility of mixtures of Nagoya clay with sand or bentonite / Y. Watabe in Géotechnique, Vol. 61 N° 3 (Mars 2011)  

Public ISBD [article]  inGéotechnique > Vol. 61 N° 3 (Mars 2011) . - pp. 211–219 Titre : Hydraulic conductivity and compressibility of mixtures of Nagoya clay with sand or bentonite Type de document : texte imprimé Auteurs : Y. Watabe, Auteur ; K. Yamada, Auteur ; K. Saitoh, Auteur Année de publication : 2011 Article en page(s) : pp. 211–219 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Clays Compressibility Permeability Fabric/Structure of soils Sands Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : In this study, a series of incremental loading oedometer tests and microscopic observations is carried out in order to investigate the influence of sand/bentonite fractions on hydraulic conductivity and compressibility. If sand particles do not form a skeletal structure, and each particle is independent in the clay matrix, an additive fraction of sand causes a decrease in the compressibility; however, it does not affect the hydraulic conductivity under the same consolidation pressure. The additive fraction of bentonite contributes to a decrease in the hydraulic conductivity, even for clayey materials. In addition, the relationship between the pore-size parameter, which represents the pore entrance size distribution, and the hydraulic conductivity is discussed using a probabilistic model known as the general capillary model. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.p.087 [article] Hydraulic conductivity and compressibility of mixtures of Nagoya clay with sand or bentonite [texte imprimé] / Y. Watabe, Auteur ; K. Yamada, Auteur ; K. Saitoh, Auteur . - 2011 . - pp. 211–219. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 61 N° 3 (Mars 2011) . - pp. 211–219 Mots-clés : Clays Compressibility Permeability Fabric/Structure of soils Sands Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : In this study, a series of incremental loading oedometer tests and microscopic observations is carried out in order to investigate the influence of sand/bentonite fractions on hydraulic conductivity and compressibility. If sand particles do not form a skeletal structure, and each particle is independent in the clay matrix, an additive fraction of sand causes a decrease in the compressibility; however, it does not affect the hydraulic conductivity under the same consolidation pressure. The additive fraction of bentonite contributes to a decrease in the hydraulic conductivity, even for clayey materials. In addition, the relationship between the pore-size parameter, which represents the pore entrance size distribution, and the hydraulic conductivity is discussed using a probabilistic model known as the general capillary model. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.p.087

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