Preparation and Mechanical Performance of Sulpoaluminate Cement by Using Industrial Solid Wastes

Abstract:

By using Mn slag, Mg slag and Fly ash which comes from industrial process in Ningxia province as raw materials, the sulpoaluminate cement was prepared via sintering raw materials in a furnace. The physical and chemical characteristic of sulpoaluminate cement clinker was tested. The optimal proportion of clinkers is also determined by the results of phase composition, microstructure and hydration mechanism. The results shows that when the mixed ratio of Mn slag, Mg slag and Fly ash is 21%, 21% and 0% respectively in the raw materials and the calcination temperature is 1300 °C for 30 min, sulphoaluminate cement clinker with maximum amount of C₄A₃S, C₂S and C₄AF was prepared. Then, natural gypsum was added into the clinker powder with a ratio of 15% to make cement materials. When water to cement ratio is 0.5 and cement to sand ratio is 1:3, the cement mortar obtain a compressive strength of 22.22 MPa at 3d, 31.2 MPa at 7 d, and the flexural strength of 3.86MPa at 3d, and 4.83 MPa at 7d respectively.

• Periodical: Key Engineering Materials (Volume 726)
• Pages: 510-514
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.726.510
• Online since: January 2017
• Authors: Shi Zhen Zhao, Feng Lan Han*, Gui Qun Liu, Mao Hui Li, Yu Jie Chen
• Keywords: Chemical Performance, Hydration Mechanism, Industrial Solid Waste, Physical Performance, Sulpoaluminate Cement

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