Abstract
This paper deals with the effect of steel cross-section and bond strength reduction on the mechanical behaviour of corroded RC-beams.
In the case of corroded reinforced concrete members, those effects are always coupled and a previous study (part one) has shown that it is not realistic to forecast the behaviour of corroded beams merely in terms of steel cross-section reduction. The object of the study is thus to understand the separated and coupled effects of the reduction in bond strength and steel cross-section. These investigations are carried out in order to be able to model the behaviour of corroded structural members and to predict how and when repairing is necessary. Different experimental simulations of corrosion were made. The results show the significant impact of coupling between reduction of bond strength and steel cross-section.
Résumé
Cet article traite de l’influence de la réduction de section d’acier et de l’adhérence acier béton en partie tendue sur le comportement mécanique des poutres corrodées.
L’étude précédente (partie 1) semble montrer qu’il n’est pas réaliste de vouloir prédire le comportement mécanique des éléments de structures corrodées en ne tenant compte que de la réduction de section des aciers tendus. Par conséquent, l’objectif de ce travail est de mieux comprendre et quantifier les effets couplés et découplés de ces deux paramètres. Pour cela, plusieurs simulations expérimentales des effets de la corrosion ont été réalisées sur poutres ou sur échantillons d’armature non corrodés. Les expérimentations mécaniques sont réalisées en service et à rupture. Les résultats obtenus confirment largement qu’une prédiction réaliste du comportement mécanique résiduel en service des poutres corrodées, ne sera obtenue qu’en prenant en compte de l’effet couplé de la réduction de section d’acier et de l’adhérence acier béton en partie tendue.
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References
Castel, A., François, R. and Arliguie, G., ‘Mechanical behaviour of a reinforced concrete beams damaged by reinforcement steel corrosion—Part 1: Experimental study of corroded beams’,Mater. Struct. 33 (233) (2000) 539–544.
François, R., Arliguie, G. and Castel, A., ‘Influence of service cracking on service life of reinforced concrete’, Proceedings, Second International Conference on Concrete under Severe Conditions, CONSEC 98, Tromsø, Norway (1998).
Schießl, P. and Raupach, M., ‘Laboratory studies and calculations on the influence of crack width on the chloride-induced corrosion of steel in concrete’,A. C. I. Materials Journal 94 (1997) 56–62.
Cairns, J., ‘Consequences of bond loss for behaviour of reinforced concrete beams’, Proceedings, 1st International Conference of structural fault and repair, Edinburgh, U.K., (1993) 149–154.
Minkarah, I. and Ringo, B. C., ‘Behaviour and repair of deteriorated reinforced concrete beams’ Transport Research Record 821, University of Cincinatti, Ohio, U.S.A. (1981).
Zhang, S. and Raoof, M., ‘Prediction of behaviour of RC beams with exposed reinforcement’,Magazine of concrete research 47 (1995) 2018–2033.
Horrigmoe, G. and Torlen, A., ‘Load-carrying capacity of damaged and repaired concrete beams’, Proceedings, 2nd International Conference on Concrete under Severe Conditions, CONSEC 98, Tromsø, Norway (1998).
French Regulations for Reinforced Concrete Structures (1983) B.A.E.L.
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Editorial Note Prof. Ginette Arliguie is a RILEM Senior Member. She works at LMDC (Laboratoire Matériaux et Durabilité des Constructions), a RILEM Titular Member.
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Castel, A., François, R. & Arliguie, G. Mechanical behaviour of corroded reinforced concrete beams—Part 2: Bond and notch effects. Mat. Struct. 33, 545–551 (2000). https://doi.org/10.1007/BF02480534
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DOI: https://doi.org/10.1007/BF02480534