Abstract
Corrosion of rebar in reinforced concrete (RC) structures leads to a reduction in strength and durability. In this paper, the lifetime flexural behavior of the corroded RC beams is examined through a simplified modeling methodology in a finite element program. To this aim, properties of the embedded reinforcing element in the finite element analysis are changed to include the bond-slip and corrosion effects in overall structural behavior. Application of the method for corroded beams leads to acceptable results, close to experimental values. To evaluate the flexural behavior of the beam over time, a theoretical model is presented regarding the reduction of cross-section and strength of the rebar, and the moment-curvature diagram is obtained for the corroded structure. The simplified method of predicting the lifetime moment-curvature behavior in this study provides the possibility of a more efficient and economical design.
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