| 摘要 |
PROBLEM TO BE SOLVED: To provide a crack restraining method for surely restraining a crack caused in a corner part peripheral wide range of an opening part, capable of sufficiently securing the cover thickness of a wall reinforcement, and causing no hindrance to filling performance of concrete. SOLUTION: A circular arc-shaped carbon fiber member 6 is arranged in a corner part 3a of the opening part 3 of a concrete building frame 1 to be constructed so that both end parts 6a respectively approach both edges of the opening part 3 for forming the corner part 3a. The concrete is placed, and the circular arc-shaped carbon fiber member 6 is fixed in the concrete. The carbon fiber reinforcing member 6 can restrain the crack in the peripheral wide range of the corner part 3a after hardening the concrete.
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