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A platform for research: civil engineering, architecture and urbanism
Preparation method of early-strength high-efficiency alkali-free accelerator
The invention discloses a preparation method of an early-strength high-efficiency alkali-free accelerator. The formula of the accelerator comprises basalt fibers, fluosilicic acid, light calcined magnesia, aluminum sulfate, polyacrylamide and triethanolamine, wherein the content of the basalt fibers is 3-5 parts, the content of the fluosilicic acid is 100 parts and is 10%-20%, the content of the light calcined magnesia is 10 parts and is not lower than 90%, the content of the aluminum sulfate is 40-50 parts, the content of the polyacrylamide is 1-2 parts, and the content of the triethanolamineis 3-5 parts. The fluosilicic acid in the raw materials is fluosilicic acid wastewater generated in the production process of a phosphate fertilizer plant, the fluosilicic acid wastewater of a phosphate fertilizer plant is subjected to waste utilization, so that the method solves the pollution discharge problem of phosphate fertilizer plants and is more environment-friendly. Meanwhile, the sprayed concrete strength and interlayer binding force are enhanced by adding basalt fibers into the accelerator, the working efficiency of tunnel sprayed concrete construction is enhanced, and the accelerator has far-reaching meanings for promoting sustainable development of China's environment and tunnel construction.
本发明公开一种早强高效无碱速凝剂的制备方法，速凝剂的配方包括玄武岩纤维、氟硅酸、轻烧氧化镁、硫酸铝、聚丙烯酰胺和三乙醇胺，所述玄武岩纤维的分量为3‑5份，所述氟硅酸的分量为100份，且为10％‑20％氟硅酸，所述轻烧氧化镁的分量为10份，且为含量不低于90％的轻烧氧化镁，所述硫酸铝的分量为40‑50份，所述聚丙烯酰胺的分量为1‑2份，所述三乙醇胺的分量为3‑5份；原料中的氟硅酸为磷肥厂生产过程中产生的氟硅酸废水，将磷肥厂的氟硅酸废水进行废物利用，本发明既解决了磷肥厂的排污问题，更加环保，同时在速凝剂中添加玄武岩纤维增强了喷射混凝土强度与层间结合力，提升了隧道喷射混凝土施工的工作效率，对于促进我国环境持续发展与隧道建设有着深远意义。
Preparation method of early-strength high-efficiency alkali-free accelerator
The invention discloses a preparation method of an early-strength high-efficiency alkali-free accelerator. The formula of the accelerator comprises basalt fibers, fluosilicic acid, light calcined magnesia, aluminum sulfate, polyacrylamide and triethanolamine, wherein the content of the basalt fibers is 3-5 parts, the content of the fluosilicic acid is 100 parts and is 10%-20%, the content of the light calcined magnesia is 10 parts and is not lower than 90%, the content of the aluminum sulfate is 40-50 parts, the content of the polyacrylamide is 1-2 parts, and the content of the triethanolamineis 3-5 parts. The fluosilicic acid in the raw materials is fluosilicic acid wastewater generated in the production process of a phosphate fertilizer plant, the fluosilicic acid wastewater of a phosphate fertilizer plant is subjected to waste utilization, so that the method solves the pollution discharge problem of phosphate fertilizer plants and is more environment-friendly. Meanwhile, the sprayed concrete strength and interlayer binding force are enhanced by adding basalt fibers into the accelerator, the working efficiency of tunnel sprayed concrete construction is enhanced, and the accelerator has far-reaching meanings for promoting sustainable development of China's environment and tunnel construction.
本发明公开一种早强高效无碱速凝剂的制备方法，速凝剂的配方包括玄武岩纤维、氟硅酸、轻烧氧化镁、硫酸铝、聚丙烯酰胺和三乙醇胺，所述玄武岩纤维的分量为3‑5份，所述氟硅酸的分量为100份，且为10％‑20％氟硅酸，所述轻烧氧化镁的分量为10份，且为含量不低于90％的轻烧氧化镁，所述硫酸铝的分量为40‑50份，所述聚丙烯酰胺的分量为1‑2份，所述三乙醇胺的分量为3‑5份；原料中的氟硅酸为磷肥厂生产过程中产生的氟硅酸废水，将磷肥厂的氟硅酸废水进行废物利用，本发明既解决了磷肥厂的排污问题，更加环保，同时在速凝剂中添加玄武岩纤维增强了喷射混凝土强度与层间结合力，提升了隧道喷射混凝土施工的工作效率，对于促进我国环境持续发展与隧道建设有着深远意义。
Preparation method of early-strength high-efficiency alkali-free accelerator
一种早强高效无碱速凝剂的制备方法
CHEN JIE (author) / GAO JIAHONG (author) / FANG SHICHANG (author) / TIAN YINGBING (author)
2020-11-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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