| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide excellent water dispersibility without trouble such as clogging of a waste water treatment facility by incorporating setting retarder and water soluble polymer substance in water soluble base material constituted by papermaking water dispersible fiber and water soluble fibrous carboxylalkylcellulose salt. SOLUTION: The hydraulic cement material setting retarding sheet is obtained by incorporating setting retarder and water soluble polymer in water soluble base material constituted by papermaking water dispersible fiber and water soluble fibrous carboxyalkylcellulose salt. Thus, the setting of the surface of the hydraulic cement material molding curable material can be retarded, and can be easily dispersed and removed from the surface of a molding by an automatic washing machine by water injecting. Since the sheet is extremely rapidly dispersed to the size of no fault in a waste water treatment facility, the operating speed of the washing machine can be accelerated.</p> |
