【摘要】 通过对不同温度煅烧的赤泥特性的研究,分析了热处理温度对赤泥胶凝性能的影响。采用XRD、DSC-TG、FT-IR等测试手段对不同温度煅烧的赤泥及其水化浆体进行研究。结果表明,热处理过程中赤泥的晶相组成发生变化;800℃煅烧的赤泥中β-C2S含量明显增加,含铝矿物的铝由四配位部分向六配位转化;不同温度煅烧的赤泥胶凝活性:600℃煅烧的赤泥>未处理赤泥>800℃煅烧的赤泥。更多还原

【Abstract】 The effect of heat treatment temperature on the cementitious activity of red mud is studied in the paper through analyzing the properties of the red mud heated at different temperatures.The red mud heated at different temperatures and the hydration pastes were determined with XRD,DSC-TG and FT-IR.The results show that the crystal composition of red mud changes during heating process;in the red mud heated at 800℃ the content of β-C2S increases obviously,and the coordination of Al transforms from 4 to 6;the cementitious activity of red mud at different temperatures: red mud heated at 600℃> red mud without heating> red mud heated at 800℃.更多还原