This paper reports the results of outdoor exposure test on the repair performance on corrosion of reinforcing bar in salt containing concrete by various repairing materials. When there is much chlorination amount of material in the concrete, effect on repression of the reinforcing bars corrosion by the repair method of construction can't be expected very much. When the repair of the section repair part is done, that countermeasure is important from showing a tendency of progressing in the part of the boundary remarkably as for the reinforcing bars corrosion after the repair.
If chipping isn't taken to the back of the reinforcing bars, the effect of rust is prevented material, section repair material, the surface covering material can't be expected any more in the case of the section repair.