Chloride-induced corrosion of reinforcement and its effect on performance of structures Online publication date: Tue, 14-Jul-2009
by Hiroshi Yokota, Ema Kato, Mitsuyasu Iwanami
International Journal of Modelling, Identification and Control (IJMIC), Vol. 7, No. 2, 2009
Abstract: This paper discusses the chloride-induced corrosion of reinforcement in marine concrete structures focusing on the variability in the progress of deterioration. Through tests and analyses of reinforced concrete slabs taken out from existing open-type piers that have been in service for 30 to 40 years, the following are particularly discussed: variation in chloride ion profiles of concrete, variation in corrosion properties of reinforcement embedded in concrete and influence of the reinforcement corrosion on the load-carrying capacity of the concrete slabs. As a result, their variability was found to be very large even in one reinforced concrete slab under almost the same conditions. It was also discussed how to determine the calculation parameters for the prediction of decreasing in load-carrying capacity of concrete members with chloride-induced corrosion of reinforcement.
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