| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method of radiation shielding concrete structure capable of sufficiently exhibiting a radiation shielding effect to prevent the reduction in strength or cracking, and performing an economical production by recycling industrial wastes as resources. SOLUTION: In addition to fine aggregate 4 and rough aggregate 18 obtained by crushing baked ferrite waste material 2, regenerated aggregate 30 obtained by crushing the concrete or mortar waste material 28 generated by the disassembling of a building is used as a part of rough aggregate. The fine aggregate 4 and rough aggregate 18, the regenerated aggregate 30 as rough aggregate, and cement 6 are mixed together in a prescribed ratio, and a chemical admixture material 8 is properly added and mixed thereto. A prescribed quantity of water 10 is added to the resulting mixture followed by kneading, whereby concrete 32 is generated. The generated concrete 32 is placed between forms 22 and 22 and provided as a radiation shielding concrete wall 43 for nuclear power related facility.
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