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Application of the reliability theory to the assessment of carbonation-induced corrosion risk of rebars / Mickael Thiery in European journal of environmental and civil engineering, Vol. 16 N° 3-4 (Mars/Avril 2012) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 273-287 Titre : Application of the reliability theory to the assessment of carbonation-induced corrosion risk of rebars Type de document : texte imprimé Auteurs : Mickael Thiery, Auteur ; Christian Crémona, Auteur ; Véronique Baroghel-Bouny, Auteur Année de publication : 2012 Article en page(s) : pp. 273-287 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Carbonation  Durability  design  Probabilistic  approach  Reliability  index  Updating Résumé : Deterministic approaches for the prediction of the carbonation penetration have limitations related to the high variability of the input data. This paper deals with two carbonation models which are developed in the framework of a probabilistic approach. The random input data are presented, i.e. materials, environment and engineering design properties. The evaluation of the time-dependent probability of carbonation-induced reinforcement corrosion is assessed by calculating the reliability index for three studied concretes. This probabilistic approach provides a framework for a sensitivity analysis which enables one to identify the most influencing model parameters which have to be determined carefully in order to improve the accuracy of the prediction and to determine the parameters whose variability should be reduced to enhance the durability. Furthermore, a probabilistic approach provides a tool to design the thickness of the concrete cover in order to avoid oversizing. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667987 [article] Application of the reliability theory to the assessment of carbonation-induced corrosion risk of rebars [texte imprimé] / Mickael Thiery, Auteur ; Christian Crémona, Auteur ; Véronique Baroghel-Bouny, Auteur . - 2012 . - pp. 273-287. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 16 N° 3-4 (Mars/Avril 2012) . - pp. 273-287 Mots-clés : Carbonation  Durability  design  Probabilistic  approach  Reliability  index  Updating Résumé : Deterministic approaches for the prediction of the carbonation penetration have limitations related to the high variability of the input data. This paper deals with two carbonation models which are developed in the framework of a probabilistic approach. The random input data are presented, i.e. materials, environment and engineering design properties. The evaluation of the time-dependent probability of carbonation-induced reinforcement corrosion is assessed by calculating the reliability index for three studied concretes. This probabilistic approach provides a framework for a sensitivity analysis which enables one to identify the most influencing model parameters which have to be determined carefully in order to improve the accuracy of the prediction and to determine the parameters whose variability should be reduced to enhance the durability. Furthermore, a probabilistic approach provides a tool to design the thickness of the concrete cover in order to avoid oversizing. DEWEY : 624 ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667987