Degradation model for reinforced concrete structures under salt attack environment - Analytical process for degradation in the lifetime

This paper discussed on the degradation model for reinforced concrete structures under salt attack environment. Reviewing the studies on corrosion problems of concrete so far, the authors constructed an analytical model which could treat the deterioration process of concrete structures with time elapse, from the beginning to the end of life time. The input of model consists of the environmental conditions, material properties and structural details, and the output shows the movement and accumulation of corrosion inducers (water, oxygen, chloride ion), the process of steel corrosion, the initiation and propagation of cracks as well as the reduction of flexural capacity of concrete structures. Finally, some analytical examples are presented.