A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete prepared from high-activity superfine copper tailing cement mineral admixture
The invention discloses concrete prepared from a high-activity superfine copper tailing cement mineral admixture. The concrete is prepared from the following raw materials: superfine copper tailings and cement. The superfine copper tailings are subjected to high-temperature calcination treatment and then subjected to mechanical grinding to replace a cement material to prepare the concrete, a large amount of calcium carbonate in the superfine copper tailings is decomposed into calcium oxide through high-temperature calcination, the reaction product ettringite of calcium oxide in the concrete is large in size, the concrete can be expanded, and the concrete can be expanded; the shrinkage of the concrete can be effectively compensated. Besides, the calcined superfine copper tailings are mechanically activated through mechanical grinding, nano-particles with composite functions are generated, the mechanically activated superfine copper tailings are mixed with 10% of cement in advance, the nano-particles are effectively dispersed, the crystal nucleus effect of the nano-particles is fully exerted, and the overall strength of the concrete is improved. The feasibility of the superfine copper tailings as a concrete material is greatly improved in the aspects, and the method can be applied to the technical field of concrete production.
本发明公开了一种利用高活性超细铜尾砂水泥矿物掺合料制备的混凝土，包括如下原料：超细铜尾砂、水泥。本发明使用高温煅烧处理超细铜尾砂，再将其机械研磨后替代水泥材料，制备混凝土，利用高温煅烧使超细铜尾砂中大量的碳酸钙分解为氧化钙，氧化钙在混凝土中的反应产物钙矾石体积较大，会使混凝土产生膨胀，能够有效补偿混凝土的收缩。此外，通过机械研磨使煅烧后的超细铜尾砂机械活化，产生具有复合功能的纳米颗粒，用机械活化过的超细铜尾砂先与10％的水泥预先拌合，有效分散纳米颗粒，充分得发挥纳米颗粒的晶核效应，提高混凝土整体强度。这些方面大幅提升了超细铜尾砂作为混凝土材料的可行性，可应用于混凝土生产技术领域。
Concrete prepared from high-activity superfine copper tailing cement mineral admixture
The invention discloses concrete prepared from a high-activity superfine copper tailing cement mineral admixture. The concrete is prepared from the following raw materials: superfine copper tailings and cement. The superfine copper tailings are subjected to high-temperature calcination treatment and then subjected to mechanical grinding to replace a cement material to prepare the concrete, a large amount of calcium carbonate in the superfine copper tailings is decomposed into calcium oxide through high-temperature calcination, the reaction product ettringite of calcium oxide in the concrete is large in size, the concrete can be expanded, and the concrete can be expanded; the shrinkage of the concrete can be effectively compensated. Besides, the calcined superfine copper tailings are mechanically activated through mechanical grinding, nano-particles with composite functions are generated, the mechanically activated superfine copper tailings are mixed with 10% of cement in advance, the nano-particles are effectively dispersed, the crystal nucleus effect of the nano-particles is fully exerted, and the overall strength of the concrete is improved. The feasibility of the superfine copper tailings as a concrete material is greatly improved in the aspects, and the method can be applied to the technical field of concrete production.
本发明公开了一种利用高活性超细铜尾砂水泥矿物掺合料制备的混凝土，包括如下原料：超细铜尾砂、水泥。本发明使用高温煅烧处理超细铜尾砂，再将其机械研磨后替代水泥材料，制备混凝土，利用高温煅烧使超细铜尾砂中大量的碳酸钙分解为氧化钙，氧化钙在混凝土中的反应产物钙矾石体积较大，会使混凝土产生膨胀，能够有效补偿混凝土的收缩。此外，通过机械研磨使煅烧后的超细铜尾砂机械活化，产生具有复合功能的纳米颗粒，用机械活化过的超细铜尾砂先与10％的水泥预先拌合，有效分散纳米颗粒，充分得发挥纳米颗粒的晶核效应，提高混凝土整体强度。这些方面大幅提升了超细铜尾砂作为混凝土材料的可行性，可应用于混凝土生产技术领域。
Concrete prepared from high-activity superfine copper tailing cement mineral admixture
一种利用高活性超细铜尾砂水泥矿物掺合料制备的混凝土
FANG HU (author) / CHEN PEIYUAN (author) / PEI CHUNNING (author) / QIAN XINLIANG (author) / ZHAO CHENG (author) / LI SHANGKUN (author) / GU ZHICHENG (author) / SHEN XIN (author) / WANG CHUNJIE (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2022
Self-compacting concrete prepared from superfine tailing sand
| European Patent Office | 2022