Concrete admixture for PHC pipe pile using superfine molybdenum tailings and pipe pile

The invention discloses a concrete admixture for a PHC pipe pile using superfine molybdenum tailings and the PHC pipe pile. The preparation method of the concrete admixture for the PHC pipe pile comprises the steps of carrying out filter pressing or filtering dehydration on the superfine molybdenum tailings, and drying; drying the desulfurized gypsum; and proportioning the dried superfine molybdenum tailings and desulfurized gypsum according to the mass ratio of (9-10): 1, and grinding the mixture in a ball mill until the specific surface area of the material is 700m < 2 >/kg-1000m < 2 >/kg to obtain the concrete admixture. The concrete admixture is prepared from the superfine molybdenum tailings, the concrete admixture is used for preparing the PHC pipe pile, the compressive strength, compactness and durability of the PHC pipe pile concrete can be improved, the production cost of the pipe pile can be reduced, resource utilization of the molybdenum tailings and the desulfurized gypsum can be achieved at the s