مشخصات پژوهش

Corrosion of reinforcement due to permeation of chloride ions into concrete is the main reason for damage and failure of reinforced concrete (RC) structures located in the marine environment in the south of Iran. In this paper, the time-dependent structural performance and failure mechanisms of RC columns subjected to chloride-induced corrosion of reinforcement are investigated. A performance-based model for the life cycle evaluation of corrosion-damaged RC structures is proposed with a focus on the effect of propagation of reinforcement corrosion on structural deterioration. The influence of increasing the water-cement ratio of the concrete mixture on nonlinear behaviour and failure modes of RC columns located in the tidal zone of Qeshm Island is investigated. The results indicate that increasing the water-cement ratio of the concrete mixture of RC columns from 0.35 to 0.5 decreases their lateral force capacity by 17.89%.