Abstract
Minor components can affect the hydration activity of dicalcium silicates (C2S) through the modification of its phase composition. In this paper, the influences of BaO, SO3 and MgO on burnability and phase composition of belite have been investigated. The results showed that SO3 could significantly decrease the f-CaO content of C2S due to the substitution of [SiO4]4− by [SO4]2−, accelerate the formation of C2S and effectively stabilize β-C2S. Different from SO3, BaO and MgO would increase the f-CaO content due to the substitution of Ca2+ by Ba2+ or Mg2+. Meanwhile, in the aspects of promoting C2S formation and stabilizing its high activity crystal, the effect of BaO or MgO was lower than SO3. SEM showed that belite clinker with SO3 was spherical-shaped and its size was in the range of 2–5 μm.
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Acknowledgments
This work was supported by the Natural Science Foundation of China (No. 51272091, No. 51072070 and No. 51102113) and Universities of Shandong Province and School Key Foundation of University of Jinan (XKY1002). Meanwhile, this work was supported by Program for Scientific Research Innovation Team in Colleges and Universities of Shandong Province. The submission was intended for the 2nd International Congress on Advanced Materials.
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Zhao, Y., Lu, L., Wang, S. et al. Modification of Dicalcium Silicates Phase Composition by BaO, SO3 and MgO. J Inorg Organomet Polym 23, 930–936 (2013). https://doi.org/10.1007/s10904-013-9873-2
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DOI: https://doi.org/10.1007/s10904-013-9873-2