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Title |
Distribution Properties of Airborne Chlorides in Korea
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Keywords |
비래염분 ; 해안 ; 염해 ; 지역계수 ; 거리 airborne chlorides ; seashore ; salt attack ; area index ; distance |
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Abstract |
Concrete structures immersed in seawater are exposed to uniform chloride concentration. However, seashore concrete structures are subjected to various airborne chlorides concentration depending on areas, distance from seashore, orientation of structures and wind direction etc. Therefore, structures which is not coming into direct contact with seawater are greatly affected by salt attack and those cases have been reported. This study intends to investigate salt attack by airborne chlorides in terms of the distance from the seashore based on the measurements conducted at 73 spots and 27 areas during 3 years in the Eastern, Western and Southern coasts of South Korea. Results revealed large regional variations of the salinity in coastal regions along with significant seasonal effects caused by seasonal winds. Moreover, the salinity is seen to diminish as the distance from the seashore increases at a rate corresponding to the function y = ax?b. These results will be helpful to do the durability design and management of seashore structures.
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