| 摘要 |
PROBLEM TO BE SOLVED: To obtain a molded product hardly causing peeling of a coated film at the initial time after the coating or after using the one for a long period by steam-curing an unhardened hydraulic inorganic molded product at high temperature and in high humidity in a state in which the lower surface keeps contact with water and the upper surface is present in air. SOLUTION: This receiving mold for curing preferably has the surface made of a water- absorbing material and a shape nearly same as the lower part of the hydraulic inorganic molded product. The hydraulic inorganic molded product 1 consisting essentially of a portland cement is molded by using a press molding apparatus or the like, and the obtained molded product is placed on the receiving mold for the curing. The contacting face of both is formed out the absorbing material 23 made of a flexible polyurethane resin foam, and the lower surface of the hydraulic inorganic molded product is stuck to the upper surface of the receiving mold for the curing. When water is fed to the receiving mold for the curing, the mold becomes a wet state and the lower surface of the hydraulic inorganic molded product 1 is brought into contact with the water. When the steam curing is carried out in the state, the surface of the hydraulic inorganic molded product does not cause the storage of the water, and an efflorescence component inhibiting the adherence of a coating film to the surface at the time of coating is not attached to the surface.
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