| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete structure, in which structure and manufacturing method are simplified while ensuring high strength, and a manufacturing method thereof. SOLUTION: An N-pole magnet 8 and an S-pole magnet 9 are installed at opposed places in the end plates 4 of forms 2, and the lines of magnetic force 10 are generated. Small pieces 13 for magnetic induction consisting of a magnetic substance are mounted into forms 2, and a concrete material 1 placed in forms 2 is composed of high superplasticized concrete filled with fibers 12 for reinforcement made up of the magnetic substance. Since the fibers 12 for reinforcement of the concrete material 1 are collected and oriented along the lines 10 of magnetic force magnetically induced by the small pieces 13, the concrete structure having high strength can be manufactured while controlling the places of the fibers 12 for reinforcement.
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