| 摘要 |
PROBLEM TO BE SOLVED: To provide water permeable concrete large in coefficient of permeability and compressive strength, and easy in forming work, etc. SOLUTION: The water permeable concrete is manufactured by putting a kneaded material of composition composed of a coarse aggregate, and paste or mortar of 30-80 vol.% based on the aggregate into a formwork to form it and successively curing it. The paste or mortar contains 100 pts.wt. cement or fine particle mixture containing cement, 0-300 pts.wt. fine aggregate, 0.3-3.0 pts.wt. a water reducing agent and 20-40 pts.wt. water. As the water reducing agent, a powdery one is used. |
