| 摘要 |
<p>PURPOSE: A cement composition is provided to improve initial strength of slag cement by using cement admixture which contains titanogypsum, limestone, and purified water sludge. CONSTITUTION: A cement composition is composed of cement and an admixture for strength improvement. The admixture contains titanogypsum, limestone, and purified water sludge. The cement is slag cement. A production method of the cement includes the following steps; (a) a preprocess solution is prepared mixing a stimulant into water; and (b) blast furnace slag is pulverized after spraying the preprocessing solution onto the blast furnace slag. The stimulant contains at least one among hydrogen peroxide, aluminum sulfate, and sodium thiosulfate. The stimulant is mixed with an amount ranged 5-10 parts by weight per 100.0 parts by weight of water. The preprocessing solution is sprayed with an amount ranged 0.5-1.5 parts by weight per 100.0 of the blast furnace slag. The blast furnace slag on which the preprocessing solution is sprayed is pulverized for 2-4 minutes in a mill and get fineness of 4,000-4500cm^2/g. [Reference numerals] (AA) Titanium; (BB) Sludge; (CC) Limestone</p> |
