| 摘要 |
PURPOSE:To obtain a molded material suitable for wall material, etc., having hollow pore and having excellent hygroscopicity and strength, etc., by making slurry by adding clay mineral contg. montmorillonite as main component, and chloride to water, thereafter by kneading with cement hydraulic material, aggregate and reinforcement, and by extrusion molding. CONSTITUTION:The slurry is made by adding clay mineral contg. montmorillonite as main component (e.g. bentonite) and chloride (e.g. calcium chloride) to water to swell the clay mineral with water. Concurrently, the exchangeable cation between layers in the swollen clay mineral is exchanged for the cation of chloride to infiltrate the cation of chloride between layers in the clay mineral. Thereafter, the hygroscopic molded material is obtd. by suitably adding the cement hydraulic material (e.g. portland cement) together with aggregate and reinforcement to the slurry, by kneading and by extrusion molding to obtain the molded material having hollow pore. |
