Abstract：This article uses industrial solid waste fluoride gypsum and slag powder as the main raw materials to prepare a new type of solid waste-based cementitious materials, and explores the influence of different amounts of fluoride gypsum and slag powder on the mechanical properties of the new solid waste-based cementitious materials. Furthermore, based on this, the influence of different concentrations of tailings slurry and different proportions of lime-sand ratio on the performance of tailings cementitious materials using new solid waste-based cementitious materials was studied. Under the same conditions, as the concentration of tailings slurry increases, the compressive strength of the tailings cementitious bodies at all curing ages gradually rises. The ash-to-sand ratio emerges as the most significant factor influencing the compressive strength of tailings cementitious bodies, with a higher ratio correlating to greater compressive strength. Research indicates that the optimal composition for the new solid waste-based cementitious materials comprises 15% fluorogypsum, 75% slag powder, 10% cement, and 0.6% composite activator. It is advisable to adopt an ash-to-sand ratio of 1:8 and utilize a 70% concentration of tailings slurry to solidify tailings for mine backfilling. This approach effectively consumes industrial solid waste and tailings sand, lowers the cost of mine backfilling while fulfilling its performance requirements, and offers guidance for the comprehensive utilization of tailings backfilling solid waste resources
李 伟, 段星泽, 夏瑞杰, 王学振, 马旺坤, 刘 举. 尾矿回填用新型固废基胶结材料试验研究[J]. 水泥杂志, 2024, 0(11): 80-.
LI Wei, et al.. Experimental study on new solid waste base cementing material for tailings backfill. Journal of Cement, 2024, 0(11): 80-.
2024, Vol. 0 
