FUNDAMENTAL STUDY ON LOCAL WINDBORNE SALT ADHESION DISTRIBUTION AROUND A BRIDGE GIRDER SECTION BY USING WIND TUNNEL EXPERIMENT

Abstract

 Generally, corrosion state depends on the part of bridge girder section because the effects such as wind velocity distribution, humidity, raindrops washing, are different in each part of the section. Windborne salt adhesion by the wind transportation is one of the important factor which governs the corrosion state. In this study, wind tunnel test including small particle diffusion and adhesion to the bridge girder section model is executed. Furthermore this result was compared with the ones of flow visualization experiment and the observation of the windborne salt adhesion on bridge girders. It is considered that this is the first step to build the partial corrosion protection to make the life of the bridge longer.