ABSTRACT

The structural steel has undergone different levels of degradation.

Concrete shows evidences of damages not induced by steel corrosion. The local freezing-thaw effects of de-icing salts produced successive scaling of concrete (figure 1, left). Water leakage with de-icing agents also favours the circulation of liquid water, even under low temperatures, with an important amount of chlorides, which ineluctably leaded to corrosion of reinforcement (figure 1, right).