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A platform for research: civil engineering, architecture and urbanism
Preparation method and application of high-sulfur metal tailing micro-powder composite admixture for concrete
The invention relates to the technical field of building materials, in particular to a preparation method and application of a high-sulfur metal tailing micro-powder composite admixture for concrete. The high-sulfur metal tailing micro-powder composite admixture is prepared from 35 to 60 parts of high-sulfur metal tailing micro-powder and 65 to 40 parts of mineral powder, the mass percentage content of SO3 in the high-sulfur metal tailing micro powder is 10%-15%, the mass percentage content of Fe2O3 is 15%-20%, and the mass percentage content of SiO2 is 35%-45%; the screen residue of the high-sulfur metal tailing micropowder through a 45 mum square hole sieve is less than 20%, and the specific surface area is 400-500 m<2>/kg. The high-sulfur metal tailing micro-powder composite admixture for concrete provided by the invention can enable various physical and mechanical properties and durability of concrete to meet requirements, has better working performance, can directly replace part of cement to be used for production of concrete of different grades, saves the production cost, and realizes secondary utilization of tailings.
本发明涉及建筑材料技术领域，具体涉及一种混凝土用高硫金属尾矿微粉复合掺合料的制备方法及其应用。该高硫金属尾矿微粉复合掺合料包括高硫金属尾矿微粉35～60份、矿粉65～40份；所述高硫金属尾矿微粉中SO3质量百分含量为10％～15％，Fe2O3的质量百分含量为15％～20％，SiO2的质量百分含量为35％～45％；所述高硫金属尾矿微粉45μm方孔筛筛余小于20％，比表面积为400～500m2/kg。本发明提供的混凝土用高硫金属尾矿微粉复合掺合料能够使混凝土的各项物理力学性能和耐久性能满足要求，具有更好的工作性能，可直接取代部分水泥用于不同等级的混凝土生产而节约生产成本，并实现了尾砂二次利用。
Preparation method and application of high-sulfur metal tailing micro-powder composite admixture for concrete
The invention relates to the technical field of building materials, in particular to a preparation method and application of a high-sulfur metal tailing micro-powder composite admixture for concrete. The high-sulfur metal tailing micro-powder composite admixture is prepared from 35 to 60 parts of high-sulfur metal tailing micro-powder and 65 to 40 parts of mineral powder, the mass percentage content of SO3 in the high-sulfur metal tailing micro powder is 10%-15%, the mass percentage content of Fe2O3 is 15%-20%, and the mass percentage content of SiO2 is 35%-45%; the screen residue of the high-sulfur metal tailing micropowder through a 45 mum square hole sieve is less than 20%, and the specific surface area is 400-500 m<2>/kg. The high-sulfur metal tailing micro-powder composite admixture for concrete provided by the invention can enable various physical and mechanical properties and durability of concrete to meet requirements, has better working performance, can directly replace part of cement to be used for production of concrete of different grades, saves the production cost, and realizes secondary utilization of tailings.
本发明涉及建筑材料技术领域，具体涉及一种混凝土用高硫金属尾矿微粉复合掺合料的制备方法及其应用。该高硫金属尾矿微粉复合掺合料包括高硫金属尾矿微粉35～60份、矿粉65～40份；所述高硫金属尾矿微粉中SO3质量百分含量为10％～15％，Fe2O3的质量百分含量为15％～20％，SiO2的质量百分含量为35％～45％；所述高硫金属尾矿微粉45μm方孔筛筛余小于20％，比表面积为400～500m2/kg。本发明提供的混凝土用高硫金属尾矿微粉复合掺合料能够使混凝土的各项物理力学性能和耐久性能满足要求，具有更好的工作性能，可直接取代部分水泥用于不同等级的混凝土生产而节约生产成本，并实现了尾砂二次利用。
Preparation method and application of high-sulfur metal tailing micro-powder composite admixture for concrete
一种混凝土用高硫金属尾矿微粉复合掺合料的制备方法及其应用
LIU JUANHONG (author) / WANG ZHOUHE (author) / MENG XIANG (author) / DING PENG (author) / WU RUIDONG (author) / PENG SHIZHONG (author) / PANG BO (author) / GUO YUNXIN (author)
2021-07-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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