| 摘要 |
PROBLEM TO BE SOLVED: To provide a new repairing technique which is applicable to repairing a concrete construction, by using a fiber reinforced cement composite material. SOLUTION: There is provided a concrete construction repairing structure using the fiber reinforced cement composite material. In the repairing structure, injection pipe lines are arranged in a construction portion formed of the fiber reinforced cement composite material, such that one end of each pipe line is opened to the outside of the construction portion for securing an injection port, and therefore a repairing material can be injected into a crack occurring inside the construction portion, from outside. If the plurality of injection pipe lines are arranged in the single construction portion, each injection pipe line is formed of: a rigid plastic porous pipe which has discharge ports radially extending from a center hole, and has depressions formed in a pipe external wall where the discharge ports are opened; and elastic valves which are arranged in the depressions formed in the porous pipe, and elastically deformable depending on injection pressure to open the discharge ports. The repairing structure is applied to a damper portion of the vibration control device. Further, injection of the repairing material is continued until the repairing material leaks out of a surface crack extended from the inner crack. COPYRIGHT: (C)2008,JPO&INPIT
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