| 摘要 |
PROBLEM TO BE SOLVED: To develop a construction method for overcoming problems such that there is no perfect construction method though various construction method have hitherto been tested so as to prevent water leakage from a crack in a bedrock or concrete while resisting hydraulic pressure and such that construction work cannot sometimes be performed in a road tunnel in use by suspension of traffic. SOLUTION: In this construction method, by virtue of the development of an epoxy resin which is cured underwater and allows bonding strength beyond tensile stress of the concrete to be obtained on a wet surface in a short time, the water leakage is left as it is; a perfect waterproof cut-off membrane is completed on a water leakage place and integrated with the crack at the water leakage place, so that the crack in natural ground or the concrete can be made waterproof; and the work can be performed even in a wet state or underwater. COPYRIGHT: (C)2003,JPO
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