| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a construction method for a cement hardened material, the thick cement hardened material hardly causing transportation failure and being easily constructed in a construction method by spraying the kneaded product of a cement composition through compression air. <P>SOLUTION: In the construction method, a cement composition containing a quick-setting agent is added by water and kneaded and the kneaded product is pressure-transported. The solubility of the quick-setting agent to 100 g of water at 50°C is 20-40 g, and to 100 g of water at 65°C is 50-90 g. The ure-transported kneaded product is mixed with compressed air at 65-95°C, and with the compressed air, the kneaded product is sprayed for construction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
