| 摘要 |
PROBLEM TO BE SOLVED: To prolong the service life of a coated land steel structure. SOLUTION: An anode electrode 4 is stuck to a coated land steel structure 7 via an insulator 5, and a ground 2a is attached away from the anode electrode 4, and further, respective positive pole and negative pole of a power unit 1 are connected to the anode electrode 4 and the ground 2a, respectively. In this way, at the time of formation of a water screen 10 due to a rainfall, etc., a corrosion protective current 6 is allowed to flow between the anode electrode 4 and the ground 2a via the defective part 9 of a coated film 8. |
