| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cement composition having excellent flowability before hardened while keeping quick hardening property after the pot life is over and having suitable pot life and excellent strength after hardened. <P>SOLUTION: The cement composition contains cement, water, calcium nitrite, a polycarboxylic acid-based water reducing agent and a melamine-based water reducing agent. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
