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.
摘要:
A gutter block structure of the present invention has a configuration in which a vegetable fiber layer made of palm fibers or the like is integrally attached to an inner surface of a water-permeable concrete material, sidewall surfaces which serve as the inner surface are formed into a stepped shape, and a bottom surface which serves as the inner surface is formed into an irregular shape. Further, both the sidewalls are formed into a curved shape or S-shape. Thus, when a water channel is formed by the gutter block structures, the supply and drain of water between the water channel and the surrounding soil is enabled, the flow velocity of water can be reduced, and zones with different flow velocities can be provided. Thus, an environment at the water channel and around the water channel can be closer to a natural condition, and an environment for growing underwater creatures can be brought into a fairly good condition.