| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection nozzle for a concrete structure repair agent capable of being inserted without the fear of backflow or removal even in case of injection under high pressure, while enabling a nozzle body to be used repeatedly, and enabling a plurality of repair agents to be injected at the same time. SOLUTION: The injection nozzle comprises the elongate nozzle body 1 with a longitudinal injection hole 1c bored therein, and a check valve 2 mounted in the nozzle body 1.
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