Response of Reinforced Concrete Beams under the Combined Effect of Cyclic Loading and Carbonation

To compare the deterioration mechanism of reinforced concrete beams between combined effect cyclic loading and carbonation sum both individual factors, an optimized test procedure was introduced in this study. The macroscopic microscopic results showed that decrease resistance could be attributed to changes pore structures crack patterns by loading. However, process flexural tensile corresponding different procedures presented trends. It indicated action fatigue damage more serious than caused superposition. Finally, a theoretical model subjected proposed validated comparing it with previous experimental results. research findings are significant for improving accuracy evaluation residual service life bridges early warning durability protection.