| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a cement quick hardening material that can secure a work life after concrete placing, and the cement quick hardening material. <P>SOLUTION: The present invention relates to (1) a method of manufacturing a cement quick hardening material obtained by mixing one or two kinds selected out of gypsum hemihydrate and gypsum dihydrate with calcium aluminate or a mixture of calcium aluminate and anhydrous gypsum, and simultaneously pulverizing them; (2) a method of manufacturing a cement quick hardening material of (1) obtained by mixing anhydrous gypsum after the simultaneous pulverization; (3) a method of manufacturing a cement quick hardening material of (1) or (2) such that the amount of one or two kinds selected out of gypsum hemihydrate and gypsum dihydrate are 0.05-3.00 pts.mass to 97.00-99.95 pts.mass of the total of calcium aluminate and anhydrous gypsum; and (4) a method of manufacturing a cement quick hardening material of one of (1) to (3) obtained by further mixing and pulverizing a lime-based material during simultaneous pulverization. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
