Calciumsilicate의 生成反應에 미치는 SO₃의 影響(II)

In this study a comparative investigation for the effect of K₂SO₄ and CaSO₄ on the decomposition of C₃S was made. When pure C₃S which was synthesized in the laboratory was mixed with K₂SO₄ and oxides such as MgO, Al₂O₃, and Fe₂O₃, and then reburned at the temperature range between 1350℃ and 1450℃, no decomposition occurred. But when CaSO₄ and Fe₂O₃ were added to C₃S and then reburned at below 1300℃, C₃S was partly decomposed to C₂S and CaO, composing 2C₂S·CaSO₄. When CaSO₄ and Al₂O₃ were added, C₃S was entirely decomposed to C₂S and CaO at 1300~1400℃, but it was not decomposed at 1450℃.