| 摘要 |
A vegetation block comprises a block main body 10 made of a concrete, and an outer layer body 20 constituted by forming, into a mat shape, a fiber aggregate F which is located on an outer surface of the block main body 10 during the forming of the block main body 10 and which enables growth of a plant. The outer layer body 20 is formed by inserting many needles into the stacked fiber F from the upper side thereof and then pressing the needles, and many longitudinal fibers are allowed-to be present in the fiber aggregate F of the outer layer body 20 to facilitate entry of the fibers into the concrete. Moreover, aggregates of uniform grain. sizes are used as aggregates of the concrete, and a porosity of the concrete is set to be 10 to 25% so that the fibers of the outer layer body 20 may easily enter into the concrete. In consequence, the outer layer body 20 is surely bonded to the concrete so as to prevent the outer layer body 20 from easily peeling off, and the rooting of the grown plant in the fiber aggregate surely proceeds.
|
