| 摘要 |
<p>PURPOSE: To provide a cement composition capable of producing mortar or concrete extremely superior in fluidity. CONSTITUTION: This producing method of the cement composition is composed of totally 100 pts.wt. consisting of 50-92 pts.wt. Portland cement, 5-25 pts.wt. silica fume and 3-25 pts.wt. lime stone fine powder. In the cement production process, the silica fume is charged into a finishing mill for pulverizing cement clinker, etc., and the silica fume is mixed at the same time as pulverizing of the cement clinker, etc., and also it is dispersed and next the lime stone fine powder having a specific particle size distribution is mixed with the pulverized product produced by the finishing mill.</p> |
