| 摘要 |
PURPOSE:To obtain a beautiful and large sized terracotta excellent in strength and impact resistance by laser treating after firing a hardened molding containing a cement, an aggregate, a heat resistant fiber and a specific binder and, if necessary, colored. CONSTITUTION:The hydraulic cement, the heat resistant aggregate (e.g. silica rock), the heat resistant fiber (e.g. wallstonite fiber) and the binder are kneaded with water and are coloring treated if necessary. The binder contains SiO2, CaO, B2O3, alkali component or the lie and is melted to make ceramic by heating. Next, the kneaded material is casted in a form, is hardened by hydration reaction and is dried. Next, the molding is fired, if necessary after glazing, and laser treated if necessary to make the surface ceramic. |
