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| Experimental study on the preparation of filling materials by bauxite tailings mud |
| Dong Xiaojuan 1, 2 |
| 1. Hebei Coal Research Institute Co., Ltd., Xingtai 054000, China; 2. National Key Laboratory of Energy
Filling Coal Mining Technology, Xingtai 054000, China |
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Abstract In this paper, through the chemical analysis of bauxite tailings mud, coal gangue, fly ash, cement and other raw materials and the flexural and compressive strength experiments of paste stone body, the paste filling materials mixed with bauxite tailings mud and fly ash were compared experimentally. The results show that with the change of the amount of bauxite tailings mud, the flexural strength and compressive strength of the filling body show a certain rule. The flexural compressive strength of paste concretion mixed with bauxite tailings mud is significantly higher than that of paste concretion mixed with fly ash, which provides a theoretical basis for solving the filling problem by using industrial solid waste.
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