Method for producing hydraulic hardened body and cement composition for carbonation curing

Abstract

To provide a method for producing a hydraulic cured body excellent in workability, low in carbon dioxide gas discharge in production, having a carbon dioxide fixing property and good in strength, and a cement composition for carbonation curing.SOLUTION: A method for producing a hydraulic cured body includes curing and carbonating a cement composition that contains water, a mixed cement containing a blast furnace slag fine powder and cement, calcium hydroxide, and a setting retarding agent to produce the hydraulic cured body. The cement composition contains 10 pts.mass or more and 70 pts.mass or less of the calcium hydroxide relative to 100 pts.mass of the total amount of the blast furnace slag fine powder, the cement and the calcium hydroxide, 30 pts.mass or more and 1,400 pts.mass or less of the calcium hydroxide relative to 100 pts.mass of the blast furnace slag fine powder, 270 kg / m3 or more and 600 kg / m3 or less in total of the blast furnace slag fine powder, the cement and the calcium hydroxide, and 25 pts.mass or more and 65 pts.mass or less of the water relative to 100 pts.mass of the total amount of the blast furnace slag fine powder, the cement and the calcium hydroxide.SELECTED DRAWING: None

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