A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of concrete, and particularly relates to a preparation method of a concrete admixture. Mixed slag formed by bauxite flotation tailings and copper ore flotation tailings is used as a basic raw material, sodium silicate, additives and the like are used for mixing, ammonium bicarbonate is added, then calcination is conducted, metal oxide particles mainly containing nano aluminum oxide and nano copper oxide are formed and deposited on the surface of the slag, and organic unification of nano particles and coarse particles is achieved; the effect of the nano particles is utilized, and the micro-aggregate filling effect is achieved; meanwhile, the concave-convex performance of the surfaces of the coarse particles is utilized, the embedding strength between the coarse particles and concrete is achieved, the mechanical property is improved, and a synergist formed by polypropylene glycol and diethanol amine is utilized; the bonding effect between thesynergist and the nano particles is utilized for combination, and the dispersion performance of the concrete admixture and the bonding performance between the concrete admixture and concrete can be effectively improved through the effect of the synergist, so that the mechanical property is further enhanced.
本发明属于混凝土技术领域，具体涉及一种混凝土掺合料的制备方法。本发明以铝土矿浮选尾矿、铜矿浮选尾矿形成的混合矿渣作为基础原料，通过利用硅酸钠、添加剂等进行混合，再加入碳酸氢铵，随后进行煅烧，使其形成了纳米氧化铝、纳米氧化铜为主的金属氧化颗粒，沉积在矿渣表面，实现了纳米可以、粗颗粒的有机统一，利用纳米颗粒作用，实现了微集料填充效应，同时利用粗颗粒表面的凹凸性能，实现了与混凝土之间的嵌合力度，增加了力学性能，利用聚丙二醇、二乙醇胺形成的增效剂，利用增效剂与纳米颗粒之间的键合作用，进行了结合，通过增效剂的作用，可以有效增加混凝土掺合料的分散性能，以及与混凝土之间的结合性能，进一步增强了力学性能。
The invention belongs to the technical field of concrete, and particularly relates to a preparation method of a concrete admixture. Mixed slag formed by bauxite flotation tailings and copper ore flotation tailings is used as a basic raw material, sodium silicate, additives and the like are used for mixing, ammonium bicarbonate is added, then calcination is conducted, metal oxide particles mainly containing nano aluminum oxide and nano copper oxide are formed and deposited on the surface of the slag, and organic unification of nano particles and coarse particles is achieved; the effect of the nano particles is utilized, and the micro-aggregate filling effect is achieved; meanwhile, the concave-convex performance of the surfaces of the coarse particles is utilized, the embedding strength between the coarse particles and concrete is achieved, the mechanical property is improved, and a synergist formed by polypropylene glycol and diethanol amine is utilized; the bonding effect between thesynergist and the nano particles is utilized for combination, and the dispersion performance of the concrete admixture and the bonding performance between the concrete admixture and concrete can be effectively improved through the effect of the synergist, so that the mechanical property is further enhanced.
本发明属于混凝土技术领域，具体涉及一种混凝土掺合料的制备方法。本发明以铝土矿浮选尾矿、铜矿浮选尾矿形成的混合矿渣作为基础原料，通过利用硅酸钠、添加剂等进行混合，再加入碳酸氢铵，随后进行煅烧，使其形成了纳米氧化铝、纳米氧化铜为主的金属氧化颗粒，沉积在矿渣表面，实现了纳米可以、粗颗粒的有机统一，利用纳米颗粒作用，实现了微集料填充效应，同时利用粗颗粒表面的凹凸性能，实现了与混凝土之间的嵌合力度，增加了力学性能，利用聚丙二醇、二乙醇胺形成的增效剂，利用增效剂与纳米颗粒之间的键合作用，进行了结合，通过增效剂的作用，可以有效增加混凝土掺合料的分散性能，以及与混凝土之间的结合性能，进一步增强了力学性能。
Preparation method of concrete admixture
一种混凝土掺合料的制备方法
LEI SIQING (author)
2021-03-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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