| 摘要 |
PROBLEM TO BE SOLVED: To provide a cement hardened material having high bending strength. SOLUTION: The cement composition is obtained by mixing and kneading alumina cement, water glass, and water. The water glass as a solid component (S) is mixed with the alumina cement (C) in a ratio S/C of 10-80%. The bending strength of such a cement composition reaches 25 N/mm<SP>2</SP>or higher, and high bending strength that can not be obtained by a hardened material of the conventional portland cement is obtained. Also at the time of curing, it can be cured by heating it in a dry air and generation of steam is unnecessary. COPYRIGHT: (C)2007,JPO&INPIT
|
