熟料—低掺量混合材体系助磨剂的助磨效果研究

Study on grinding effects of grinding aids on clinker-low dosage admixture system

研究了不同官能团助磨剂对纯硅酸盐水泥熟料体系和熟料-低掺量混合材体系的助磨效果的作用规律,结果表明,助磨剂组分对这两种体系的助磨效果和增强效果基本相同。然后以普通硅酸盐水泥为对象,研究提产型复合助磨剂。分别研究了多元醇和多元醇复合以及多元醇和醇胺复合的情况,结果表明,对于熟料-低掺量混合材体系,丙二醇和丙三醇含量较高的复合多元醇助磨效果较好,乙二醇含量较高的复合多元醇助磨效果相对较弱;乙二醇与TEA复合具有助磨叠加效应,丙二醇与TEA复合具有助磨-增强功能叠加效应。以助磨效果较好的多元醇为主要组分,早强作用较好的TEA为辅助组分,可以为熟料-低掺量混合材体系配制提产型复合助磨剂。最后简要分析不同助磨剂组分之间的复合叠加效应,为助磨剂功能化配伍设计提供依据。

The grinding effect of grinding aids with different functional group on pure Portland cement and clinker-low dosage admixture system were studied. The results showed that the grinding effects and reinforced effects of the component of grinding aids on two cement systems were almost the same. The grinding aids that could increase output of ordinary Portland cement were studied. The grinding aids that composite with polyol and polyol, and the grinding aids that composite with polyol and alcohol amine were studied respectively. The results showed that the composite polyol with high content of propylene glycol and glycerol polyol has good grinding effect, but the grinding effect of composite polyol with high content of glycol was relatively weaker. A cumulative effect on grinding effect was induced by mixing of glycol and TEA, and the cumulative effect on grinding effect and reinforced effect were induced by mixing of propylene glycol and TEA. The key component of grinding aids that could increase output of ordinary Portland cement was polyol, and the auxiliary ingredient of grinding aids was TEA. Improvement-type composite grinding aids could be made for clinker-low dosage admixture system. Finally, the compound cumulative effect between different components of grinding aids was studied. It could provide the basis for randomized block design of grinding aids compatibility.