| 摘要 |
PROBLEM TO BE SOLVED: To provide a dilapidated manhole renovation structure in which only a weak point of a manhole is reinforced, to thereby construct the renovation structure at a low cost and in a short construction period. SOLUTION: In construction of the dilapidated manhole renovation structure, a fiber sheet is stuck to an inner surface of the manhole, and mortar is applied to corner portions of the fiber sheet to form a double-layered structure. Therefore, according to the dilapidated manhole renovation structure, center portions between the corner portions are covered only with the fiber sheet. COPYRIGHT: (C)2005,JPO&NCIPI
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