TUBE FOR INJECTING GROUT MATERIAL AND INJECTION METHOD

PROBLEM TO BE SOLVED: To provide an injection tube which can be easily inserted into a grout injection hole by an operator, even in a limited space with intricate reinforcement structures in a construction work site and in an environment where the operator's attitude and the direction of the grout injection hole are restricted, and which can reduce a grout loss, and an injection method using the injection tube.SOLUTION: A tip of an injection tube 7 whose external diameter Dsatisfies D≤D≤D+4, while Dis an inner diameter of a grout injection hole, and is made of soft materials that can freely bend is inserted into the grout injection hole, and grout is fed under pressure from a rear end of the injection tube 7 and injected into the inside of a mechanical joint or anchor hardware.SELECTED DRAWING: Figure 1 【課題】工事現場の鉄筋構造体が入り組んだ限られた空間で、作業員の姿勢やグラウト注入孔の向き等の制約を受ける環境において、作業員が注入用チューブをグラウト注入孔に容易に挿入し、かつグラウトロスを減少することが可能な注入用チューブ、およびそれを用いた注入方法を提供する。【解決手段】グラウト注入孔の内径ＤHに対して外径ＤTがＤH≦ＤT≦ＤH＋４を満足しかつ自在に湾曲する軟質な素材からなる注入用チューブ７の先端部をグラウト注入孔に挿入し、注入用チューブ７の後端からグラウト材を圧送して機械式継手または定着金物の内部に注入する。【選択図】図１