Documents disponibles écrits par cet auteur

Temperature dependence of the sorption isotherms of cement-based materials: Heat of sorption and Clausius–Clapeyron formula / Stéphane Poyet in Cement and concrete research, Vol. 39 N° 11 (Novembre 2009) 

Public ISBD [article]  in Cement and concrete research > Vol. 39 N° 11 (Novembre 2009) . - pp. 1060–1067 Titre : Temperature dependence of the sorption isotherms of cement-based materials: Heat of sorption and Clausius–Clapeyron formula Type de document : texte imprimé Auteurs : Stéphane Poyet, Auteur ; Sébastien Charles, Auteur Année de publication : 2010 Article en page(s) : pp. 1060–1067 Note générale : Génie Civil Langues : Anglais (eng) Index. décimale : 691 Matériaux de construction. Pièces et parties composantes Résumé : In the field of radioactive waste management the concrete structures are expected to undergo significant heating due to the waste thermal power and significant drying (in the French design, the temperature is not expected to exceed 80 °C). The durability assessment of such structures thus requires the knowledge of the evolution of the water vapour sorption properties versus temperature. The latter can be easily estimated using the Clausius–Clapeyron (CC) equation: the approach presented hereafter requires the knowledge of the isosteric heat of adsorption and one desorption isotherm (at ambient or any other temperature). Moreover, it is shown that using the CC equation and the desorption isotherms at two different temperatures, it is possible to estimate accurately the desorption isotherm at any other temperature. DEWEY : 620.13 ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001768 [article] Temperature dependence of the sorption isotherms of cement-based materials: Heat of sorption and Clausius–Clapeyron formula [texte imprimé] / Stéphane Poyet, Auteur ; Sébastien Charles, Auteur . - 2010 . - pp. 1060–1067. Génie Civil Langues : Anglais (eng) in Cement and concrete research > Vol. 39 N° 11 (Novembre 2009) . - pp. 1060–1067 Index. décimale : 691 Matériaux de construction. Pièces et parties composantes Résumé : In the field of radioactive waste management the concrete structures are expected to undergo significant heating due to the waste thermal power and significant drying (in the French design, the temperature is not expected to exceed 80 °C). The durability assessment of such structures thus requires the knowledge of the evolution of the water vapour sorption properties versus temperature. The latter can be easily estimated using the Clausius–Clapeyron (CC) equation: the approach presented hereafter requires the knowledge of the isosteric heat of adsorption and one desorption isotherm (at ambient or any other temperature). Moreover, it is shown that using the CC equation and the desorption isotherms at two different temperatures, it is possible to estimate accurately the desorption isotherm at any other temperature. DEWEY : 620.13 ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001768

Visual parameters of chloride-induced corrosion of reinforced concrete structures / Sébastien Charles in European journal of environmental and civil engineering, Vol. 15 N° 1 (Janvier 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 1 (Janvier 2011) . - pp. 9-24 Titre : Visual parameters of chloride-induced corrosion of reinforced concrete structures Type de document : texte imprimé Auteurs : Sébastien Charles, Auteur ; Valérie L'Hostis, Auteur ; Stéphane Poyet, Auteur Année de publication : 2011 Article en page(s) : pp. 9-24 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Reinforced  concrete  Corrosion  Visual  inspection  Marine  environment Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Corrosion is the major cause of reinforced concrete structures degradation: the pressure generated by oxides formation together with section loss can eventually lead to cracking and the fall in the structure bearing capacity and then jeopardize its service life. The first method for the corrosion state characterisation of concrete structures is to check periodically for visual signs of corrosion on the concrete facing (rust stains and cracks). The goal of this study is to assess the ability of visual inspection to detect and quantify reinforcement corrosion in concrete structures. The data acquired in the framework of the "Poutres de la Rance" benchmark were re-analysed to link the visual signs of corrosion to its real internal consequences (section loss, corroded length...etc.). The results show that, in our case (marine environment), visual inspection does not yield efficient assessment of the real corrosion state and that other non-destructive techniques must be used in order to gain confidence in the diagnosis. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=15661 [article] Visual parameters of chloride-induced corrosion of reinforced concrete structures [texte imprimé] / Sébastien Charles, Auteur ; Valérie L'Hostis, Auteur ; Stéphane Poyet, Auteur . - 2011 . - pp. 9-24. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 1 (Janvier 2011) . - pp. 9-24 Mots-clés : Reinforced  concrete  Corrosion  Visual  inspection  Marine  environment Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Corrosion is the major cause of reinforced concrete structures degradation: the pressure generated by oxides formation together with section loss can eventually lead to cracking and the fall in the structure bearing capacity and then jeopardize its service life. The first method for the corrosion state characterisation of concrete structures is to check periodically for visual signs of corrosion on the concrete facing (rust stains and cracks). The goal of this study is to assess the ability of visual inspection to detect and quantify reinforcement corrosion in concrete structures. The data acquired in the framework of the "Poutres de la Rance" benchmark were re-analysed to link the visual signs of corrosion to its real internal consequences (section loss, corroded length...etc.). The results show that, in our case (marine environment), visual inspection does not yield efficient assessment of the real corrosion state and that other non-destructive techniques must be used in order to gain confidence in the diagnosis. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=15661