粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2011NO.2 专题研光 拜耳法赤泥对水泥浆体孔溶液碱度及强度发展的影响 Influence of Bayer Red-mud on the Alkalinity of Cement-based Material Pore Solution and the Strength Development 吴芳，李利，周代军，李志杰 (重庆大学材料科学与工程学院，重庆400045) 摘要：通过测定同水胶比下拜耳法赤泥与普通硅酸盐水泥、硫铝酸盐水泥复配的水泥浆体孔溶液州值和抗压强 度，结合XRD分析研究了赤泥掺量对复配体系孔溶液碱度及抗压强度的影响.研究表明，普通硅酸盐水泥浆体和硫铝 酸盐水泥浆体孔溶液碱度均随赤泥掺量的增加而增大.接人赤泥并不会引起水泥水化后期孔溶液碱度的增加.普通硅 酸盐水泥中赤泥掺量宜控制在30%以内，而硫铝酸盐水泥中赤泥掺量则不能超过20%.普通硅酸盐水泥孔溶液碱度发 展与强度之间存在明显的相关性. 关键词：拜耳法赤泥；pH值；强度 中图分类号：TQ172.4*4 文献标识码：A文章编号：1005-8249(2011)02-0007-05 Wu Fang Li Li Zhou Dai-jun Li Zhi-jie Institute of Material Science and Engineering of.Chongqing University Chongqing 400045 China) Abstract:The pH value and presive strengh of different bayer red-mud content with ordinary portland cement and sulphoaluminate cement paste pore solution under the same water cement ratio were tested The effect the red mud quantity were analyzed by XRD.Test results showed a linear increase in alkalinity of portland cement paste pore solution and sulphoaluminate cement paste pore solution with Bayer red-mud. Red mud would not increase the late alkalinity of cement-hased material pore solution.the mixing amount of red mud in the portland cement shouald be in the range of thirty pereent red mud while the mixing amount of red mud in the sulphoaluminate cement should not exeed twenty pereent. The correlation existed obvivusly between the alkalinity and strength of portland cement. Key words:Bayer red-mud:PH value :Strength 拜耳法赤泥是使用...
拜耳法赤泥对水泥浆体孔溶液碱度及强度发展的影响.pdf
