| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete admixture to prevent the corrosion of a reinforcing rod used as a reinforcing aggregate for a concrete structure, to prevent fungal growth on a concrete surface, and to prevent the entry of harmful insects, and the like. SOLUTION: This concrete admixture is produced by mixing a concrete composition material such as mortar, and the like, with copper powder or grain whose diameter is 1 mm or less, favorably 0.1 mm or less and whose adding amount to the concrete composition material is 1-10 pts.wt., favorably 1-5 pts.wt. COPYRIGHT: (C)2004,JPO |
