| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a joint structure used for repairing an existing joint section and having high working efficiency, high water cutoff performance, and high durability. Ž<P>SOLUTION: This joint structure is used for concrete irrigation channels and channel gutters. A groove equal to or wider than a joint section is formed in the joint section or a joint section not covered by a coating mortar, and a primer is applied to the joint section or the formed groove as necessary. The joint section or the groove is filled with a sealing material, treated with a primer as necessary, and coated with a urea urethane resin. The sealing material is a silyl group terminal polyalkylene oxide resin or the epoxy resin deformed resin of the silyl group terminal polyalkylene oxide resin. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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