DOI: 10.11648/j.ajset.20261103.14 ISSN: 2578-8353

A Review on Corrosion Mitigation Strategies for Reinforced Concrete Structures Exposed to Climate Events

Mostafa Hassan
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The propagation of deterioration in vital reinforced concrete (RC) structures is a critical issue for infrastructure subjected to extreme climate change. Billions of US dollars were spent annually on the rehabilitation of RC structures. Accurate projections of future climate data for each city worldwide must consider their influence on RC members. This research will present a review of some existing RC structures exposed to CO 2 and chloride-induced corrosion. Moreover, this research will discuss methods for investigating the projection of extreme climate events, providing a framework for projecting future climate data. The limit state functions for carbonation and chloride-induced corrosion are provided for various concrete sections and crack widths to predict the reliability index for assessing structural safety. This study will discuss sustainable materials and corrosion mitigation strategies to inhibit chloride- and carbonation-induced corrosion. It was deduced that a geopolymer concrete (GPC) material composed of 40% fly ash (FA) and 60% slag (SG) shows good resistance to chloride-induced corrosion compared to an ordinary Portland cement concrete mix and a GPC mix composed of 50% FA and 50% SG. Furthermore, GPC, which consists of 40% FA and 60% SG, will increase the service life of the RC structure compared to a mix composed of 50% FA and 50% SG. Finally, a crack width limitation for RC structures located in different climate regions must be assessed in various codes to adapt them to the future projection of extreme climates to reduce the risks to RC structures.

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