| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a high strength cement technology excellent in flowability, workability, and strength developability under a condition that the ratio of water to cement is 12-30%. <P>SOLUTION: A high strength cement composition excellent in flowability, workability, and strength developability under a condition that the ratio of water to cement is 12-30% can be obtained by incorporating 70-84 parts by weight of low-heat portland cement containing 45-74 wt.% belite and≤4.0 wt.% aluminate phase in a clinker mineral composition and having a specific surface area of 3,000-4,500 cm<SP>2</SP>/g, and 16-30 parts by weight of silica fume into the composition. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
