| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cement composition excellent in fluidity, which can obtain predetermined fluidity using a small amount of an admixture. <P>SOLUTION: The amount of fine gypsum in a cement composition is reduced while ensuring a predetermined amount of gypsum therein. That is, the amount of all gypsum in the cement composition is 0.90-1.50 mass% in terms of SO<SB>3</SB>and the amount of fine gypsum of≤10μm is confined to≤0.70 mass% in terms of SO<SB>3</SB>. The amount of hemihydrate gypsum of≤10μm contained in the cement composition is confined to≤0.61 mass% in terms of SO<SB>3</SB>. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
