| 摘要 |
PURPOSE:To obtain a cement compsn. having improved suitability to kneading, peeling from a roll and press molding and increasing the bending strength of a hardened molded body by using PVA having a high polymn. degree. CONSTITUTION:This cement compsn. consists of hydraulic cement, a PVA-based polymer having an average polymn. degree of >=4,000 and water. |
