| 摘要 |
PURPOSE:To obtain a colored cement product, capable of stacking thereof just after coating and excellent in also water resistance and durability after hardening by feeding a powdery material containing a powder coating, composed of a thermoplastic resin and added to cement onto the surface of a cement product and curing the resultant product under specific conditions. CONSTITUTION:A powdery material containing 3-100 pts. powder coating, composed of a thermoplastic resin and added to 100 pts. cement is fed onto the surface of a cement product and water required to carry out hydrating reaction of cement is added. The resultant coated product is then cured in an autoclave under temperature conditions above the melting point of the powder coating to color the cement product. The reason why the powder coating is added in an amount of 3-100 pts. is as follows. If the amount thereof is smaller than 3 pts., required water resistance cannot be imparted to films and sufficient coloring cannot be performed. If the amount is larger than 100 pts., the amount of the blended cement is reduced in inverse proportion thereto and the film strength is deteriorated. |
