Abstract
Recent research has extensively investigated the impact behavior of reinforced concrete beams (RC), with growing attention to the degradation caused by corrosion. Despite these efforts, the complex interplay between corrosion rate and impact loading parameters remains insufficiently understood. To address these knowledge gaps, this study examines the effects of corrosion rate and drop hammer height on the dynamic performance of RC beams, which is essential for understanding structural resilience under extreme conditions. Experiments were conducted with corrosion rates of 0 %, 5 %, 10 %, 15 %, and 20 %, and drop hammer heights of 1 m, 2 m, and 3 m. The study provides novel insights into the failure characteristics, dynamic responses, energy dissipation, and load–displacement behavior of corroded RC beams. The results indicated that higher corrosion rates increased both the number and width of cracks. At the same drop hammer height, the peak impact load decreases as the stirrup corrosion level increases. The energy dissipation shows a positive correlation with drop hammer height, with impulse increasing as the height rises. A predictive model for peak impact load was developed, showcasing a strong correlation between experimental and simulation results, offering a new theoretical framework for assessing structural safety under varying degrees of corrosion.
Published Version
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