| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete block having high vegetation power and excellent in water and air purification powers. SOLUTION: Into a mold 4 for wedge block, a common concrete, which comprises portland cement and forms wedge block body, is poured; a porous concrete is poured on it; further a charcoal-containing concrete, which contains a large amount of bamboo charcoal, is poured on the porous concrete; and these are fastened and solidified. The charcoal-containing concrete 3, which contains large amount of charcoal on its surface, porous concrete parts 2, which encloses the charcoal and has a thickness of about 10 cm, and common concrete parts 1 are integrally molded. The obtained concrete block has a large amount of spaces having excellent water permeability, air permeability and root penetrability in its inner part, and it has excellent water retainability and high vegetation power. |
