Recently it is found that many RC structures are deteriorated by chloride attack, especially under marine conditions. RC superstructures of open type wharves are located right above the sea level, so it is prone to the damage by chloride included in seawater splash. Therefore, in order to use those wharf structures for long time in good condition, it is rather important to grasp the actual deterioration condition and to carry out the suitable maintenance works based on the prediction of deterioration. In this study, field investigation on wharves damaged by chloride attack was carried out, and a model representing deterioration progress was developed based on the field investigation results.
