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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 same time, and remarkable environmental benefits and economic benefits are achieved.
本发明公开了一种利用极细钼尾矿的PHC管桩用混凝土掺合料和PHC管桩。所述PHC管桩用混凝土掺合料的制备包括：将极细钼尾矿经压滤或过滤脱水，烘干；将脱硫石膏烘干；将烘干的极细钼尾矿和脱硫石膏，按质量比为(9～10):1配比，并在球磨机中粉磨至物料比表面积为700m2/kg～1000m2/kg，得到所述混凝土掺合料。本发明通过利用极细钼尾矿制备混凝土掺合料，采用该混凝土掺合料来制备PHC管桩，可以提高PHC管桩混凝土的抗压强度，密实度和耐久性，可以降低管桩生产成本，同时可实现钼尾矿和脱硫石膏的资源化利用，具有显著的环境效益和经济效益。
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 same time, and remarkable environmental benefits and economic benefits are achieved.
本发明公开了一种利用极细钼尾矿的PHC管桩用混凝土掺合料和PHC管桩。所述PHC管桩用混凝土掺合料的制备包括：将极细钼尾矿经压滤或过滤脱水，烘干；将脱硫石膏烘干；将烘干的极细钼尾矿和脱硫石膏，按质量比为(9～10):1配比，并在球磨机中粉磨至物料比表面积为700m2/kg～1000m2/kg，得到所述混凝土掺合料。本发明通过利用极细钼尾矿制备混凝土掺合料，采用该混凝土掺合料来制备PHC管桩，可以提高PHC管桩混凝土的抗压强度，密实度和耐久性，可以降低管桩生产成本，同时可实现钼尾矿和脱硫石膏的资源化利用，具有显著的环境效益和经济效益。
Concrete admixture for PHC pipe pile using superfine molybdenum tailings and pipe pile
利用极细钼尾矿的PHC管桩用混凝土掺合料和管桩
GENG BIYAO (author) / SHI SHIHU (author) / WU SHIJIAN (author) / XIE SHENGQING (author) / ZHU WEIGEN (author)
2021-12-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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