Durability of Reinforced Concrete Structures in Marine Environment

Abstract

This report presents the result of the investigation of corrosion of reinforced steel and concrete deterioration.

The corrosion of reinforced steel is the most critical problem to affect the durability of reinforced concrete in marine environment. When reinforced steel rust, the corroded products generally occur considerably more volume than that of the original steel. This expansion depend on corrosion of reinforced steel causes cracking and spalling of the cover concrete which accelerates the rate of corrosion.

On the result of this investigation, the reinforced concrete structures in marine environment, the corrosion of reinforced steels are affected by the contented salt (use of beach sand and the penetration of chloride) in concrete. In particular, the structures built in the coastal zone suffered heavy damage due to the penetration of sea-salt particles.

The relation of the sea-salt particles and the penetration of chloride into concrete is when: the sea-salt particles volume is greater than 0.12mg/dm²/day, the penetration of chloride volume tends to increase suddenly.