A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Efficient coal ash activator and preparation method thereof
The invention discloses an efficient fly ash activator and a preparation method thereof, and belongs to the technical field of building materials. The preparation method of the activator comprises thefollowing steps: (1) adding an efficient water reducing agent, the sodium fluosilicate, the triethanolamine and the cellulose ether according to respective mass fraction proportions, reacting under preset conditions, and meanwhile, starting to stir to prepare a mixture; (2) respectively grinding the desulfurized gypsum and the calcium oxide to enable the grinding particle size to reach the standard; and (3) adding the ground desulfurized gypsum, calcium oxide and powdery instant silicic acid into water according to respective mass fractions, adding the mixture prepared in the step (1), mixingand stirring for 30 minutes to obtain the activator. A large amount of solid waste can be consumed, later shrinkage of the concrete can be reduced through reaction of the chemical gypsum and the flyash, and the problem that the early strength of the fly ash concrete is too low can be solved through the powdery instant sodium silicate.
一种高效粉煤灰活化剂及其制备方法，属于建筑材料技术领域。所述高效粉煤活化剂的制备方法，包括以下步骤：（1）将高效减水剂、氟硅酸钠、三乙醇胺和纤维素醚按照各自的质量分数比例加入到，并在预设条件下进行反应，同时开始进行搅拌，制得混合物；（2）将脱硫石膏和氧化钙分别进行粉磨，使得研磨粒径达到标准；（3）将粉磨好的脱硫石膏，氧化钙和粉状速溶硅酸按照各自的质量分数加入到水中，再加入由步骤（1）制得的混合物进行混合搅拌，持续30分钟后，制得活化剂。本发明能够消耗大量固废，使得化学石膏与粉煤灰反应能够减少混凝土后期的收缩，且粉状速溶硅酸钠能够解决粉煤灰混凝土早期强度过低的问题。
Efficient coal ash activator and preparation method thereof
The invention discloses an efficient fly ash activator and a preparation method thereof, and belongs to the technical field of building materials. The preparation method of the activator comprises thefollowing steps: (1) adding an efficient water reducing agent, the sodium fluosilicate, the triethanolamine and the cellulose ether according to respective mass fraction proportions, reacting under preset conditions, and meanwhile, starting to stir to prepare a mixture; (2) respectively grinding the desulfurized gypsum and the calcium oxide to enable the grinding particle size to reach the standard; and (3) adding the ground desulfurized gypsum, calcium oxide and powdery instant silicic acid into water according to respective mass fractions, adding the mixture prepared in the step (1), mixingand stirring for 30 minutes to obtain the activator. A large amount of solid waste can be consumed, later shrinkage of the concrete can be reduced through reaction of the chemical gypsum and the flyash, and the problem that the early strength of the fly ash concrete is too low can be solved through the powdery instant sodium silicate.
一种高效粉煤灰活化剂及其制备方法，属于建筑材料技术领域。所述高效粉煤活化剂的制备方法，包括以下步骤：（1）将高效减水剂、氟硅酸钠、三乙醇胺和纤维素醚按照各自的质量分数比例加入到，并在预设条件下进行反应，同时开始进行搅拌，制得混合物；（2）将脱硫石膏和氧化钙分别进行粉磨，使得研磨粒径达到标准；（3）将粉磨好的脱硫石膏，氧化钙和粉状速溶硅酸按照各自的质量分数加入到水中，再加入由步骤（1）制得的混合物进行混合搅拌，持续30分钟后，制得活化剂。本发明能够消耗大量固废，使得化学石膏与粉煤灰反应能够减少混凝土后期的收缩，且粉状速溶硅酸钠能够解决粉煤灰混凝土早期强度过低的问题。
Efficient coal ash activator and preparation method thereof
一种高效粉煤灰活化剂及其制备方法
ZHANG YANNIAN (author) / CUI CHANGQING (author) / GU XIAOWEI (author) / HAI HONG (author) / WANG TING (author) / ZHANG YUYU (author) / KANG NAN (author) / WANG TIEYUAN (author) / YAN MINGCHENG (author) / YU YANG (author)
2020-08-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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