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Effects of electrode configuration on electrokinetic stabilization for caisson anchors in calcareous sand / Amnart Rittirong in Journal of geotechnical and geoenvironmental engineering, Vol. 134 N°3 (Mars 2008) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°3 (Mars 2008) . - pp. 352–365 Titre : Effects of electrode configuration on electrokinetic stabilization for caisson anchors in calcareous sand Type de document : texte imprimé Auteurs : Amnart Rittirong, Auteur ; Julie Q. Shang, Auteur ; Eltayeb Mohamedelhassan, Auteur Année de publication : 2008 Article en page(s) : pp. 352–365 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Soil  stabilization  Caissons  Anchors  Cements  Soil-structure  interaction  Pull-out  resistance Résumé : The study is on the electrokinetic strengthening of caisson anchors embedded in offshore calcareous sand. The effects of electrode configuration on the effectiveness of electrokinetic treatment are investigated based on electric field analysis and are verified by results from a series of large scale laboratory tests on caisson models of 200mm diam and 400mm height, embedded in calcareous sand submerged under seawater. The electrokinetic treatment generates cementation of soil solids as well as bonding between soil and caisson shafts, which leads to increases in the side resistance and overall pullout resistance. The effectiveness of electrokinetic treatment is directly related to the electric field intensity. A linear relationship is observed between the increase in the side resistance and energy consumption. The study shows that the effectiveness of electrokinetic treatments can be maximized by the optimization of the electric field distribution through the electrode configuration. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A3%2835 [...] [article] Effects of electrode configuration on electrokinetic stabilization for caisson anchors in calcareous sand [texte imprimé] / Amnart Rittirong, Auteur ; Julie Q. Shang, Auteur ; Eltayeb Mohamedelhassan, Auteur . - 2008 . - pp. 352–365. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°3 (Mars 2008) . - pp. 352–365 Mots-clés : Soil  stabilization  Caissons  Anchors  Cements  Soil-structure  interaction  Pull-out  resistance Résumé : The study is on the electrokinetic strengthening of caisson anchors embedded in offshore calcareous sand. The effects of electrode configuration on the effectiveness of electrokinetic treatment are investigated based on electric field analysis and are verified by results from a series of large scale laboratory tests on caisson models of 200mm diam and 400mm height, embedded in calcareous sand submerged under seawater. The electrokinetic treatment generates cementation of soil solids as well as bonding between soil and caisson shafts, which leads to increases in the side resistance and overall pullout resistance. The effectiveness of electrokinetic treatment is directly related to the electric field intensity. A linear relationship is observed between the increase in the side resistance and energy consumption. The study shows that the effectiveness of electrokinetic treatments can be maximized by the optimization of the electric field distribution through the electrode configuration. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A3%2835 [...]