| 摘要 |
The present invention relates to a composition for white cement. More specifically, the present invention relates to a composition for white cement which includes blast furnace slag fine powder with high fineness as a main material, and an alkali and/or sulfate stimulator. The composition for white cement has physical properties equal to or superior than that of white cement and uses the blast furnace slag fine powder, which is prepared without a firing process, as a main material instead of white cement, thereby reducing manufacturing costs remarkably and protecting environment. The composition for white cement of the present invention comprises 20 to 80 parts by weight of an alkali and/or sulfate stimulator with respect to 100 parts by weight of the blast furnace slag fine powder of which fineness (specific surface area) is in the range of 6,000-8,000 cm^2/g. Ferric oxide content in the blast furnace slag fine powder is less than 0.5 wt% with respect to the total weight of the blast furnace slag fine powder, and fineness (specific surface area) of the alkali and/or sulfate stimulator is in the range of 4,000-8,000 cm^2/g. Ferric oxide content in the alkali and/or sulfate stimulator is less than 0.5 wt% with respect to the total weight of alkali and/or sulfate stimulator. |
