Modeling of chloride transport coupled with enhanced moisture conductivity in concrete exposed to marine environment / Prince O'Neill Iqbal in Cement and concrete research, Vol. 39 N° 4 (Avril 2009)  

Public ISBD [article]  inCement and concrete research > Vol. 39 N° 4 (Avril 2009) . - pp.329–339 Titre : Modeling of chloride transport coupled with enhanced moisture conductivity in concrete exposed to marine environment Type de document : texte imprimé Auteurs : Prince O'Neill Iqbal, Auteur ; Tetsuya Ishida, Auteur Année de publication : 2009 Article en page(s) : pp.329–339 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Chloride convection  Diffusivity  Marine environment  Sorption  Moisture conductivity Résumé : In this research, the chloride penetration in concrete is modeled under marine environment loadings. Moisture migration model is enhanced to simulate the sorption flux under submerged wetting after long exposure to drying. The non-ideal viscosity of flow in the porous media is modified according to the nature of micro-pore structure by modeling the sensitivity of different porous networks (dense and coarse) to react towards the external environment. The strong sorption flux generated as a result of wetting and drying cyclic exposure is modeled by applying hydraulic pressure at the exposed surface. Chloride profiles are then simulated by coupling the enhanced moisture conductivity model with chloride transport model. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609000027 [article] Modeling of chloride transport coupled with enhanced moisture conductivity in concrete exposed to marine environment [texte imprimé] / Prince O'Neill Iqbal, Auteur ; Tetsuya Ishida, Auteur . - 2009 . - pp.329–339. Génie Civil Langues : Anglais (eng) in Cement and concrete research > Vol. 39 N° 4 (Avril 2009) . - pp.329–339 Mots-clés : Chloride convection  Diffusivity  Marine environment  Sorption  Moisture conductivity Résumé : In this research, the chloride penetration in concrete is modeled under marine environment loadings. Moisture migration model is enhanced to simulate the sorption flux under submerged wetting after long exposure to drying. The non-ideal viscosity of flow in the porous media is modified according to the nature of micro-pore structure by modeling the sensitivity of different porous networks (dense and coarse) to react towards the external environment. The strong sorption flux generated as a result of wetting and drying cyclic exposure is modeled by applying hydraulic pressure at the exposed surface. Chloride profiles are then simulated by coupling the enhanced moisture conductivity model with chloride transport model. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609000027

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