Planting concrete block, planting structure, and planting concrete block construction method

摘要

PROBLEM TO BE SOLVED: To provide a concrete block hardly causing incompleteness of the object of greening by allowing the growth of a plant to be prevented, when the concrete block is used at a parking space where cars do not pass so frequently, an unusual vehicle passage where cars usually do not pass but pass when an accident or an emergent business occurring facilities, or a footpath. SOLUTION: This concrete block C for plantation composed of a porous concrete having 20-40% porosity has a concave part and/or a convex part on the surface of the concrete block C for the plantation so that a gap may be formed between the base surface of the concrete block C for the plantation and the surface of a tire D within a pressing region of the tire D when the tire D pressing the surface of the concrete block C for the plantation.