| 摘要 |
PROBLEM TO BE SOLVED: To provide a cast-in-place permeable concrete capable of providing an excellent workability and shortening a curing period even if cast under low temperature environment (approximately 2 to 10 deg.C in atmospheric temperature). SOLUTION: This cast-in-place permeable concrete is formed by casting the mixture of a composition having coarse aggregate and paste or mortar having a volumetric ratio thereof to the coarse aggregate of 30 to 80%. The paste or mortar comprises normal portland cement or high-early-strength portland cement of 100 pts.mass, metakaolin of 0.1 to 35 pts.mass, fine aggregate of 0 to 150 pts.mass, water reducing agent of 0.5 to 3.0 pts.mass, and water of 15 to 30 pts.mass.
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