US 12,172,183 B2
Corrosion prevention method and corrosion prevention device
Yosuke Takeuchi, Musashino (JP); Ryuta Ishii, Musashino (JP); Shota Oki, Musashino (JP); Takuya Kamisho, Musashino (JP); and Masayuki Tsuda, Musashino (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/431,567
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Feb. 6, 2020, PCT No. PCT/JP2020/004447
§ 371(c)(1), (2) Date Aug. 17, 2021,
PCT Pub. No. WO2020/170828, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 2019-028058 (JP), filed on Feb. 20, 2019.
Prior Publication US 2022/0134374 A1, May 5, 2022
Int. Cl. E04G 23/02 (2006.01); B05C 3/02 (2006.01); B05D 1/18 (2006.01); C04B 14/48 (2006.01); C04B 41/00 (2006.01); C04B 41/45 (2006.01); C04B 41/65 (2006.01); C09D 5/08 (2006.01); E04C 5/01 (2006.01); G01N 17/00 (2006.01)
CPC B05C 3/02 (2013.01) [B05D 1/18 (2013.01); C04B 14/48 (2013.01); C04B 41/009 (2013.01); C04B 41/4535 (2013.01); C04B 41/65 (2013.01); C09D 5/084 (2013.01); E04G 23/02 (2013.01); G01N 17/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An anticorrosion method for suppressing corrosion of a reinforcing bar in reinforced concrete, the method comprising:
infiltrating an anticorrosion solution a vicinity of the reinforcing bar through the concrete to passivate the reinforcing bar, wherein the anticorrosion solution is held in a storage unit formed by the concrete and disposed inside the concrete;
detecting that the anticorrosion solution is infiltrated to an outside surface of the concrete; and
discharging, after detecting the anticorrosion solution, the anticorrosion solution remaining in the storage unit to outside of the concrete to form an anticorrosive coating on a surface of the reinforcing bar.