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Preparation method of nano ettringite crystal nucleus early strength agent, obtained product and application
The invention discloses a preparation method of a nano ettringite crystal nucleus early strength agent as well as an obtained product and application of the nano ettringite crystal nucleus early strength agent. The nano ettringite crystal nucleus early strength agent is prepared by sequentially and slowly dropwise adding a calcium salt solution and an aluminum salt solution into a polar dispersant aqueous solution at normal temperature, adjusting the pH value to 10.0-12.0 by using a sodium hydroxide solution and synchronously stirring in the dropwise adding process. The nano ettringite crystal nucleus early strength agent prepared by the invention is relatively small in particle size and relatively good in dispersion stability, can greatly improve the mechanical properties of a cement-based grouting material at all ages, and particularly has a remarkable effect of improving the early strength of the cement-based grouting material. Heating and ultrasonic dispersion are not needed during preparation, and the preparation method is simple and suitable for large-scale production.
本发明公开了一种纳米钙矾石晶核早强剂的制备方法及所得产品和应用，该纳米钙矾石晶核早强剂是在常温下将钙盐、铝盐溶液依次缓慢滴加到极性分散剂水溶液中，利用氢氧化钠溶液调节pH值到10.0~12.0，滴加过程中同步进行搅拌工作，制得。本发明制得的纳米钙矾石晶核早强剂粒径尺寸较小，分散稳定性较好，可以大幅度改善水泥基灌浆材料的各龄期力学性能，尤其是提升其早期强度效果显著。制备时无需加热和超声分散，制备方法简单，适于大规模生产。
Preparation method of nano ettringite crystal nucleus early strength agent, obtained product and application
The invention discloses a preparation method of a nano ettringite crystal nucleus early strength agent as well as an obtained product and application of the nano ettringite crystal nucleus early strength agent. The nano ettringite crystal nucleus early strength agent is prepared by sequentially and slowly dropwise adding a calcium salt solution and an aluminum salt solution into a polar dispersant aqueous solution at normal temperature, adjusting the pH value to 10.0-12.0 by using a sodium hydroxide solution and synchronously stirring in the dropwise adding process. The nano ettringite crystal nucleus early strength agent prepared by the invention is relatively small in particle size and relatively good in dispersion stability, can greatly improve the mechanical properties of a cement-based grouting material at all ages, and particularly has a remarkable effect of improving the early strength of the cement-based grouting material. Heating and ultrasonic dispersion are not needed during preparation, and the preparation method is simple and suitable for large-scale production.
本发明公开了一种纳米钙矾石晶核早强剂的制备方法及所得产品和应用，该纳米钙矾石晶核早强剂是在常温下将钙盐、铝盐溶液依次缓慢滴加到极性分散剂水溶液中，利用氢氧化钠溶液调节pH值到10.0~12.0，滴加过程中同步进行搅拌工作，制得。本发明制得的纳米钙矾石晶核早强剂粒径尺寸较小，分散稳定性较好，可以大幅度改善水泥基灌浆材料的各龄期力学性能，尤其是提升其早期强度效果显著。制备时无需加热和超声分散，制备方法简单，适于大规模生产。
Preparation method of nano ettringite crystal nucleus early strength agent, obtained product and application
一种纳米钙矾石晶核早强剂的制备方法及所得产品和应用
YE ZHENGMAO (author) / NIU TENG (author) / LU XIAOLEI (author) / WU JIAMING (author) / SUN XIAOJIE (author)
2021-08-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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