Influence of High-silicon Limestone on Mineral Structure and Performance of Belite-Barium Calcium Sulphoaluminate Clinker
The mineral structure and performance of belite-barium calcium sulphoaluminate cement clinker were investigated by petrographic analysis, X-ray diffraction and scanning electron microscopy, while raw materials were studied by differential thermal analysis, thermogravimetric analysis and X-ray diffraction. The results show that high-silicon limestone has low decomposition temperature which can promote the development of alite by adding small quantity. The formation and development of C3S is hindered in α-quartz while C3S is formed easily by mixing magnesite and dolomite in the low temperature. The proper proportions of high-silicon limestone and ordinary limestone is 1:5, and the compressive of this cement at 3, 7, 28 d are 37.9, 60.3, 87.9 MPa, which shows excellent mechanical properties.
P. Q. Zhao et al., "Influence of High-silicon Limestone on Mineral Structure and Performance of Belite-Barium Calcium Sulphoaluminate Clinker", Advanced Materials Research, Vols. 168-170, pp. 460-465, 2011