Abstract
Premature failure caused by steel corrosion is one of the most prominent durability problems of the reinforced concrete (RC) beams. Efficient evaluation of the ultimate bending moment of the corroded RC (CRC) beams is important for engineering practice. A great number of researches have been carried out, and various evaluation models have been proposed. However, the advantages and disadvantages of the existing models are still unclear, and less comparison studies among these models have been conducted. Therefore, the objective of this study is to review the existing models and clarify the merits and deficiencies of each model. Six empirical models for evaluating the ultimate bending moment of CRC beams are analyzed. Comparison study among these models is conducted based on 177 sets of experimental data collected from published literatures. According to the comparative analysis results, the advantages and disadvantages of each model are discussed. The comparison results show each existing model can exhibit good performance in evaluating a particular kind of experimental data. However, when the experimental data are out of the applicable range of each model, the existing empirical models may result in significant derivations.
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