Study on Production of Autoclaved Aerated Concrete by Coal Gangue Fly Ash

Abstract:

In this paper, the low-silicon coal gangue fly ash is used to produce autoclaved aerated concrete. The influences of water binder ratio, coal gangue fly ash content, calcareous content and conditioning agents on the compressive strength of the autoclaved aerated concrete are investigated. Optimal raw material formulation and procedure are determined for the autoclaved aerated concrete. The compressive strength and frost resistance of autoclaved aerated concrete made by the optimal raw material formulation and procedure meet with the requirements of autoclaved aerated concretes of B05 grade, and its thermal conductivity, drying shrinkage reach the requirements of the relevant national standards of China.

• Periodical: Applied Mechanics and Materials (Volumes 357-360)
• Pages: 949-954
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.357-360.949
• Online since: August 2013
• Authors: Ye Zhang*, Peng Xuan Duan, Bao Sheng Jia, Lei Li
• Keywords: Aerated Concrete, Coal Gangue, Fly Ash (FA), Inorganic Admixture, Low Silicon

References

[1] Q Li, G. N. Sun, Y. F. Han, S. J. Chen. Analysis of regenerative utilization ways of coal gangue resourse in China. Coal conversion, 2007 (1): 78.

[2] G. Sun, H. S. Liu. Research status and progress of coal gangue utilization. Coal processing and comprehensive utilization, 2012(3): 53.

[3] M. Yang, J. S. Qian. Effect of gypsum in the fly ash-lime-sulphate systems. Fly ash comprehensive utilization, 2007(5): 47.

[4] S. B. Mou, Z. Y. Sun. Study on the hydration products and structure morphology of fly ash aerated concretes. Fly ash comprehensive utilization, 2002(1): 16.