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International Journal of Engineering & Technology Sciences
IJETS 2023, 17 pages - Article ID: IJETS-2310242112865
Investigating the Impact of Corrosion on Reinforced Concrete Frames with Corroded Steel Reinforcements
Department of Civil Engineering, Technical and Vocational University (TVU), Tehran, Iran
ABSTRACT
This article focuses on the behavior of reinforced concrete frames with corroded steel reinforcements at different corrosion rates. To achieve this, the study delves into factors influencing corrosion, including the reduction of mechanical properties of steel reinforcements, the decrease in mechanical properties of concrete cover, and the decrease in the bond strength between steel reinforcements and concrete, to investigate the explosive behavior of these structures. Seven models with identical concrete frame geometries were analyzed in this study, with variations only in the rates of steel reinforcement corrosion and the affecting factors. Concrete frames with steel reinforcements corroded at rates of 5%, 10%, and 15%, considering the simultaneous and individual effects of reducing the mechanical properties of steel reinforcements, decreasing the mechanical properties of the concrete cover, and reducing the bond strength between steel reinforcements and concrete, were examined. The results indicate that the reduction in bond strength between steel reinforcements and concrete significantly reduces the resistance of concrete frames. Moreover, as the level of corrosion in the reinforcements increases, the extent of damage inflicted on the structure will significantly rise.