| 摘要 |
PURPOSE:To obtain a molded body with suppressed pit defects on the surface by casting a lightweight cellular concrete mortar containing a specified amt. of water reducing agent in a molding flask, vibrating the mortar with a vibrator, and then molding by foaming. CONSTITUTION:A slurry essentially consisting of a silica source material (e.g. is silica powder) and a lime source material (e.g. normal portland cement) is mixed with a water reducing agent by >=0.05wt.%. solid proportion (e.g. high condensation salt of naphthalene sulfuric acid and formalin) and further with a foaming agent (e.g. metal aluminum powder) and water to prepare a slurry. Then the obtd. mortar for lightweight cellular concrete is cast into a molding flask. The cost mortar is vibrated with a vibrator. Then by a general method the cost mortar is molded by foaming, released from the molding flask, cut with a piano wire, aged in an autoclave, etc., to obtain a lightweight cellular concrete product. |
