̅̅Research on Calcination Condition of Alite-Rich Portland Cement Clinker with C_2.75B_1.25A_{3 S}

Abstract:

Calcination condition and mechanical performance of alite-rich Portland cement with barium calcium sulphoaluminate mineral(C2.75B1.25A3S ) were investigated by the orthogonal test method in which the influencing factors included sintering temperature, sintering time and cooling method. The composition, structure and performance of the clinker were analyzed by the means of X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy and metallographic microscope. The results show that C2.75B1.25A3S mineral and alite can coexist in one clinker system. The introduction of C2.75B1.25A3S mineral to clinker system is benefit to promote the formation of alite at lower temperature. The optimal sintering temperature, sintering time and cooling method are 1380°C, 60 min and two-stage cooling, respectively. Under these processing conditions, the compressive strength of alite-rich Portland cement with barium calcium sulphoaluminate reaches 43.4, 80.6 and 123.8 MPa at 3d, 7d and 28d curing ages, respectively, which shows excellent performance of mechanical strength.

• Periodical: Advanced Materials Research (Volumes 450-451)
• Pages: 392-396
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.450-451.392
• Online since: January 2012
• Authors: Shou De Wang, Xiang Yang Guo, Ling Chao Lu
• Keywords: Alite, Barium Calcium Sulphoaluminate, Calcination Condition, Cooling Method

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