| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray device capable of preventing the scattering of a spray material from a cavity part while securing operationality sufficiently; and a method for reinforcing an existing structure by using the same.SOLUTION: A spray device 10 comprises a spray nozzle 11, spray material supply means 13 for supplying a spray material to a spray nozzle 11 and compressed-air supply means 12 for supplying compressed-air to the spray nozzle 11, and the spray device 10 can spray the spray material with compressed-air from the spray nozzle 11. In the spray device, a control valve 23 capable of adjusting the supply amount of compressed-air and an on-off valve 24 capable of opening and closing a compressed-air supply pipe 22 in a state of supporting the spray nozzle 11 are interposed in the compressed-air supply pipe 22 installed in the spray nozzle 11. |
