PURPOSE: To improve insulating ability and corrosion-proofing ability of a reinforcement by a method wherein dip coating with polymer cement where rubber is mixed in cement is applied on reinforcement.

CONSTITUTION: In reinforcement of a reinforced concrete structure, dip coating with polymer cement where rubber is mixed in cement is applied on reinforcement. This constitution forms a film of polymer cement on the surface of the reinforcement and improves insulating ability and corrosion-proofing ability of the reinforcement.