In this research, airborne chlorides of sea bridges in terms of height were measured every month in the West and South coast for 1 year. The results showed that the decreasing tendency of airborne chlorides to height strongly depends on the maximum amount of airborne chlorides of the target area.

The airborne chlorides environment by de-icing salts of the Suam road tunnel in motorway were examined. It was found that higher airborne chlorides were detected inside road tunnel than outside. Therefore, there is a need to appreciate that RC structures inside tunnel might be exposed to salt attack environment.

The airborne chlorides environment by de-icing salts of the Suam road tunnel in motorway were examined. It was found that higher airborne chlorides were detected inside road tunnel than outside. Therefore, there is a need to appreciate that RC structures inside tunnel might be exposed to salt attack environment

The airborne chlorides environment by de-icing salts of retaioning wall in motorway were examined. It was found that in the retaining wall, height of 14m, the airborne chlorides tend to be decreased by height ranged between 81.0-73.8%.

Quantification of incoming-salt in the air is absolutely critical for the use of the boundary conditions in chloride resistance design. Thus, as a result of collecting incoming-salt by using multidirectional incoming-salt collector, it was confirmed that incoming-salt was collected not only in the direction of viewing the coast but also in the opposite direction. For this, it is believed that it is necessary to analyze the relationship between the effective defense incoming-salt and the non-effective defense incoming-salt that is delivered through a local flow of surrounding wind