Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the technical field of preparation of novel building materials, and discloses a method for improving the utilization efficiency of gypsum in sulphoaluminate cement. The methodincludes pre-treating Gypsum to improve the activation performance of the gypsum; applying same for respectively preparing sulphoaluminate cement clinker and adding pretreated gypsum into the sulphoaluminate cement clinker in a post-mixing manner, thus improving the gel strength and reducing the water demand, promoting sulphoaluminate cement clinker firing, and reducing combustion temperature andcarbon dioxide yield; according to the invention, the zinc-containing multi-metal nano powder is utilized to improve the hydration activity of the calcium sulphoaluminate mineral, a large amount of post-doped gypsum is not needed, and the prepared sulphoaluminate cement has the strength 12-17% higher than that of the sulphoaluminate cement added by 2 times of the amount of gypsum. The invention solves the problems of high gypsum consumption and poor accumulation effect in the preparation of sulphoaluminate cement, further enhances the resistance, durability, cracking resistance and other properties of the sulphoaluminate cement, and effectively inhibits the defect of later compressive strength shrinkage of the sulphoaluminate cement.
本发明涉及新型建筑材料制备技术领域，公开了一种提高石膏在硫铝酸盐水泥中利用效率的方法，将石膏经过预处理提高其活化性能，再分别用于硫铝酸盐水泥熟料制备以及熟料后掺添加使用添加使用预处理后的石膏，既起到了提高了凝胶体强度和降低需水量的作用，还可以促进硫铝酸盐水泥熟料的烧成，降低燃烧温度和二氧化碳产量，利用含锌多金属纳米粉料提高硫铝酸钙矿物的水化活性，不需要大量后掺石膏，制备得到的硫铝酸盐水泥比2倍石膏量添加的配比强度高出12‑17%。解决了硫铝酸盐水泥制备中石膏用量大，累积效果不佳的问题，对硫铝酸盐水泥的抗性、耐久性、防裂性等性能进一步得到提高，有效抑制了硫铝酸盐水泥后期抗压强度倒缩缺陷。
The invention relates to the technical field of preparation of novel building materials, and discloses a method for improving the utilization efficiency of gypsum in sulphoaluminate cement. The methodincludes pre-treating Gypsum to improve the activation performance of the gypsum; applying same for respectively preparing sulphoaluminate cement clinker and adding pretreated gypsum into the sulphoaluminate cement clinker in a post-mixing manner, thus improving the gel strength and reducing the water demand, promoting sulphoaluminate cement clinker firing, and reducing combustion temperature andcarbon dioxide yield; according to the invention, the zinc-containing multi-metal nano powder is utilized to improve the hydration activity of the calcium sulphoaluminate mineral, a large amount of post-doped gypsum is not needed, and the prepared sulphoaluminate cement has the strength 12-17% higher than that of the sulphoaluminate cement added by 2 times of the amount of gypsum. The invention solves the problems of high gypsum consumption and poor accumulation effect in the preparation of sulphoaluminate cement, further enhances the resistance, durability, cracking resistance and other properties of the sulphoaluminate cement, and effectively inhibits the defect of later compressive strength shrinkage of the sulphoaluminate cement.
本发明涉及新型建筑材料制备技术领域，公开了一种提高石膏在硫铝酸盐水泥中利用效率的方法，将石膏经过预处理提高其活化性能，再分别用于硫铝酸盐水泥熟料制备以及熟料后掺添加使用添加使用预处理后的石膏，既起到了提高了凝胶体强度和降低需水量的作用，还可以促进硫铝酸盐水泥熟料的烧成，降低燃烧温度和二氧化碳产量，利用含锌多金属纳米粉料提高硫铝酸钙矿物的水化活性，不需要大量后掺石膏，制备得到的硫铝酸盐水泥比2倍石膏量添加的配比强度高出12‑17%。解决了硫铝酸盐水泥制备中石膏用量大，累积效果不佳的问题，对硫铝酸盐水泥的抗性、耐久性、防裂性等性能进一步得到提高，有效抑制了硫铝酸盐水泥后期抗压强度倒缩缺陷。
Method for improving utilization efficiency of gypsum in sulphoaluminate cement
一种提高石膏在硫铝酸盐水泥中利用效率的方法
GUO PING (Autor:in)
31.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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