Corrosion Behavior of Fiber-Reinforced Concrete—A Review

Abstract

Corrosion study of conventional reinforcement in concrete has been accorded wider importance in the last few decades based on the losses occurring in monitoring concrete structures. It is well known that the presence of chloride ions is one of the most significant factors contributing to the corrosion of reinforcing steel. Practically, it is observed that in the marine environment, the activating substances such as chlorides that penetrate the steel can counteract the passivity locally when the electrolyte is highly alkaline. The concrete cover is changed chemically when chloride ionspenetrate into the material, whereupon the pore solution is neutralized. Based on numerous studies, it is evident that steel fibers and glass fibers have less impact on cracked sections in a chloride environment and can oppose chloride infiltration. Glass fibers, when exposed to repeated freeze and thaw conditions, protect the passive layer. This review article highlights the corrosion behavior of reinforced concrete involving various factors such as cracking behavior, transportation, electric conductivity, resistivity, and diffusion of chloride ions in the presence of steel and glass fibers.

A holistic life cycle design approach to enhance the sustainability of concrete structures

“…Out of this perimeter, the fibers presented a light corrosion without any reduction of their cross section. In line with this result, other experiments [49][50][51][52][53] the rapid corrosion for the fibers located within 10 mm from the exposed surface regardless of the exposure period and testing an environment characterized by a chloride concentration up to 35 g/L of NaCl with an exposure time ranging from 67 days up to 5 years. In view of this, as better explained in Section 2.5.2, the worst case scenario has been taken into consideration for the LCA and LCC purpose, assuming that fibers are immediately corroded as soon as the critical chloride concentration of above is reached (0.44% by weight of cement).…”

Examining the ability of palm kernel shell extract to control corrosion and assess its economic value on thermo-mechanically treated steel in artificial seawater: a sustainable and environmentally friendly approach

“…Many steel and reinforced concrete constructions have been subjected to chloride ions, which has caused corrosion and reduced their longevity. Naidu and Joseph (2022) state that corrosion in reinforced concrete happens when an aggressive substance, such as chloride, diffuses into the reinforcement. Although there are several ways to prevent corrosion, using inhibitors is still the most popular method ( Saha et al, 2015b ; Saha et al, 2015a ; Saha et al, 2016 ; Saha et al, 2019 ; Saha et al, 2021 ; Fouda et al, 2022 ; Saha et al, 2022 ; Wang et al, 2022 ; Bijapur et al, 2023 ; Li et al, 2023 ).…”

Long-Term Bearing Capacity of Concrete Pile Composite Foundation under Composite Salt Erosion

“…The environmental corrosion process of concrete is very complex and slow, and the corrosion degree and corrosion mechanism of concrete structures are different in different corrosion environments [1][2][3][4]. There are different mechanisms of sulfate attack on concrete and concrete cracking in four environments: soluble cations, magnesium ions, low temperature, humid or carbonized environment, and the dry-wet cycle [5].…”