【摘 要】
：
Calcium barium sulphoaluminate(CBSA), derived from calcium sulphoaluminate(CSA), has excellent cementitious properties.In this study, the sintering system o
【机 构】
：
School of Civil Engineering, Dalian University of Technology, 116024, China
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
Calcium barium sulphoaluminate(CBSA), derived from calcium sulphoaluminate(CSA), has excellent cementitious properties.In this study, the sintering system of CBSA with a t1eoretical stoichiometric Ca3.sBa0.5Al6SO16was investigated.Rietveld refinement was performed using TOPAS4.2 software to quantitatively calculate the content of CBSA the actual ionic site occupancy of Ba2+.The results indicate that the contents of Ca4-xBaxA16SO16 increases with increasing sintering temperature in the 1200℃-1400℃ ranges.When sintered at 1400℃ for 180min, the content of CBSA reaches 76.2%.However, it begins to decompose at 1440℃ and the content of which decreases.The replacementrate of Ba2+ was also enlarged by increasing sintering temperature and prolonged sintering time.Sintering at 1400℃ for 180min is considered as the optimum when replacementrate of Ba2+ and the content of CBSA was taken into account.
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