Abstract
The serviceability of reinforced concrete structures (i.e., bending stiffness) is mostly affected by the corrosion of the tension reinforcement (steel cross-section and the steel-concrete bond reduction). This paper presents two models aiming to predict the stiffness degradation of corroded reinforced concrete beams particularly after cracking. The two modelling approaches are: beam Macro- Finite-Elements (MFE) using cross-section analysis developed at the LMDC Toulouse and 2D nonlinear finite element analysis developed at Politecnico di Milano. Both, the steel cross-section and bond reduction versus corrosion rate are taken into account. The models are validated by simulating tests on a 23 year old corroded beam from long term experiments still in progress at LMDC. Results show a good agreement between both simulations and the experimental responses and highlight the predominant influence of the steel-concrete bond loss.
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Castel, A., Coronelli, D., François, R., Cleland, D. (2011). Modelling the Stiffness Reduction of Corroded Reinforced Concrete Beams after Cracking. In: Andrade, C., Mancini, G. (eds) Modelling of Corroding Concrete Structures. RILEM Bookseries, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0677-4_15
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DOI: https://doi.org/10.1007/978-94-007-0677-4_15
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