Abstract
There are many corrosion damaged bridges in cold or snowy districts because deicing salts are spread to prevent freeze on road. The amount of spread deicing salts has increased every year since the use of studded tires was prohibited in Japan. Corrosion due to scatter of deicing salts are reported on parallel bridges with different height of the road surface and/or on bridge close to the ground in Japan. However, it has not been clear enough that the influence of scattered deicing salts on the corrosion of steel bridges. In this paper, the relation between the amount of spread deicing salt and adhered salt to girder is observed, and the relation between scattered salt and corrosion of test piece using weathering steel is observed. Furthermore the evaluation of applicability of weathering steel bridge in spread deicing salt are is discusses.
