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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Physical, Chemical and Mechanical Analysis of a Reinforced Concrete Beam Corroded in Chloride Environment
Author(s): T. Vidal, A. Castel, and R. Francois
Publication: Special Publication
Appears on pages(s): 59-76
Keywords: chloride; corrosion; reinforced concrete
Abstract:This paper deals with the examination of a 17-year-old corroded beam. First, the cracking map due to corrosion was recorded. Second, a flexural test was conducted to measure the residual mechanical behaviour and the load-bearing capacity of the beam. Third, the degree of reinforcement Corrosion was assessed by removing all the concrete surrounding the reinforcing bars, and fourth the total chloride content in the vicinity of reinforcement was measured. The chloride content measure and the distribution of corrosion along the beam indicated that the prediction of corrosion initiation in reinforced concrete members is highly dependant on the quality of the steel-concrete interface. By comparing the cracking map and the degree of corrosion of the beam, actual models reliability, predicting the degree of corrosion from corrosion cracks width, was checked. A comparison between the mechanical behaviour and the degree of corrosion allowed a separation of the influence of steel section loss and bond loss on the decrease in the stiffness and the load-bearing capacity of the beam. Comparisons with existing models were also carried out.
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