| abstract |
[PROBLEMS] To eliminate the need for large-scale equipment, to quickly perform curing work, to effectively prevent drying shrinkage due to evaporation of moisture, to prepare a dense cement concrete hardened body, and to provide a heat insulation effect, in a low temperature environment However, the present invention provides a curing method that can suppress drying shrinkage and build a high-quality cement concrete structure with good strength development. SOLUTION: A cement concrete is placed in a mold, and after hardening, the surface of the hardened cement concrete is liquid A containing diene polyol, foaming agent, catalyst, and liquid B containing diisocyanate. Is coated with 150 to 1,500 g / m 2 of foamed polyurethane resin with a foaming ratio of 1.2 to 8 times, and a foamed cured film is formed on the surface of the cured cement concrete to obtain a coated cement concrete cured body. This is a curing method for cement concrete, and further, a curing method for cement concrete in which the formed foamed hardened film is peeled off at the end of curing. [Selection figure] None |