Durability of reinforced concrete exposed to aggressive conditions

A. M. Aguirre; R. Mejía de Gutiérrez

doi:10.3989/mc.2013.00313

Authors

A. M. Aguirre Universidad del Valle
R. Mejía de Gutiérrez Universidad del Valle

DOI:

https://doi.org/10.3989/mc.2013.00313

Keywords:

reinforced concrete, steel corrosion, mineral additions, electrochemical rehabilitation

Abstract

Reinforced concrete is the most widely used construction material in the world. The combination of high compressive strength, afforded by concrete and, and the excellent mechanical properties that characterise steel make it an ideal composite for all manner of structures. One of the main weaknesses of this material, however, is that when the concrete is exposed to aggressive environments, in particular high concentrations of chloride ions or carbon dioxide, reinforcing steel corrodes, shortening service life. This article reviews the state of the art on concrete durability, along with the conditions that affect its useful life by inducing reinforcing steel corrosion. It also discusses the prevention and control methods, in particular electrochemical prevention and rehabilitation techniques, that have been developed to mitigate the problem.

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