The Behavior of Corroded Reinforced Concrete Beams under External Loads: A Literature Review
Received: 15 May 2025 | Revised: 15 June 2025 | Accepted: 6 July 2025 | Online: 6 October 2025
Corresponding author: Asma Mahdi Ali
Abstract
The phenomenon of Reinforced Concrete (RC) corrosion refers to the deterioration of metal and specifically steel, due to the chemical, electrochemical, and electrolytic processes occurring within the concrete surface. This type of corrosion leads to major weaknesses. Initially, early bar failure induces a decrease in the reinforcement's ductility and cross-sectional area. Secondly, the expansion of the corrosion products reduces the total load-bearing capacity of the RC beams by generating concrete cracking, degradation of the steel–concrete connection, and an impact on the bending stiffness of the RC members. This study aims to review and analyze the effects of corrosion on the structural behavior of over forty corroded RC beams under external loads. It aims to identify the main factors of corrosion, evaluate prevention techniques, and provide alternatives to enhance the durability and performance of corroded RC structures.
Keywords:
shear strength, corroded RC beams, corrosion period, causes of corrosion, corrosion evaluation, structural behavior, failure modes, corrosion prevention, durability, rehabilitation techniques, bond strength, flexural capacity, service lifeDownloads
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