Copper tailing-based ultra-high performance concrete and preparation method thereof

The invention provides copper tailing-based ultra-high performance concrete and a preparation method thereof.The copper tailing-based ultra-high performance concrete is prepared from a gelling material and aggregate, the mass ratio of the gelling material to the aggregate is 1.1: 1, and the gelling material is prepared from, by mass, 50-65% of P.O 52.5 Portland cement, 0-15% of silica fume, 5-20% of copper tailing slurry, 2.5-3.8% of a polycarboxylic acid water reducing agent and the balance of water. The ultra-high performance concrete with ultra-high performance is prepared by taking the copper tailings as a raw material, the concrete has the characteristics of good working performance, high compressive strength and the like, the fluidity reaches 260-285 mm, the 28d compressive strength reaches 121.6-129.4 MPa, and a very good solution is provided for resource utilization of the copper tailings. 本发明提供了一种铜尾矿基超高性能混凝土及其制备方法，所述铜尾矿基超高性能混凝土原料分为胶凝材料和骨料，胶凝材料与骨料的质量比为1.1：1，所述胶凝材料的原料组分及质量百分配比如下：P.O 52.5硅酸盐水泥50～65％，硅灰0