二乙醇单异丙醇胺-三异丙醇胺激发沸石粉后期活性机理研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (9): 2891-2897.

二乙醇单异丙醇胺-三异丙醇胺激发沸石粉后期活性机理研究

王信刚, 陈涛, 赵华, 李玉洁

南昌大学建筑工程学院,南昌 330031

收稿日期:2021-03-21 修回日期:2021-05-17 出版日期:2021-09-15 发布日期:2021-10-08
通讯作者: 赵华,博士,副教授。E-mail:zhaohua@ncu.edu.cn
作者简介:王信刚(1977—),男,博士,教授。主要从事绿色先进土木工程材料方面的研究。E-mail:wxglab@126.com
基金资助:
国家自然科学基金(52062032,51972158);江西省主要学科学术和技术带头人-领军人才项目(20204BCJ22001)

Late Activity Mechanism of Zeolite Powder Activated by Diethanol-Isopropanolamine and Triisopropanolamine

WANG Xingang, CHEN Tao, ZHAO Hua, LI Yujie

School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, China

Received:2021-03-21 Revised:2021-05-17 Online:2021-09-15 Published:2021-10-08

摘要/Abstract

摘要： 以二乙醇单异丙醇胺-三异丙醇胺(DEIPA-TIPA)为助磨增强剂激发沸石粉后期活性。采用激光散射粒度分布分析仪表征沸石粉的粒径分布,采用X射线衍射仪(XRD)、环境扫描电子显微镜(ESEM)、热重分析仪(TGA)分别表征水泥水化产物的成分、微观形貌、氢氧化钙(CH)含量。结果表明,加入0.04%(质量分数)的助磨增强剂(m(DEIPA):m(TIPA)=6:4),沸石粉比表面积提高了85.4 m²·kg^-1,平均粒径减小了1.45 μm。水泥胶砂中掺入10%(质量分数)活化激发的沸石粉,沸石粉28 d活性指数提高了7%。DEIPA-TIPA助磨增强剂通过吸附-分散作用和络合作用促进了沸石粉-水泥体系的水化过程以及沸石粉的二次水化反应,在一定程度上提高了水化产物的均匀性和密实度,从而起到提高水泥胶砂强度的作用。

关键词: 沸石粉, 助磨增强剂, 活化激发, 吸附-分散作用, 络合作用

Abstract: Diethanol-isopropanolamine and triisopropanolamine (DEIPA-TIPA) grinding & enhancing aid (GEA) was used for activating the late activity of zeolite powder (ZP). The particle size distribution of ZP was characterized by laser scattering particle size distribution analyzer. The composition, micro-morphology, CH content of hydration products were characterized by XRD, ESEM and TGA. The results show that the specific surface area of ZP increases by 85.4 m²·kg^-1 and the average particle size decreases by 1.45 μm when 0.04% (mass fraction) GEA (m(DEIPA):m(TIPA)=6:4) is added. Adding 10% (mass fraction) activated ZP to cement mortar, the activity index of ZP increases 7% in 28 d. DEIPA-TIPA GEA promotes the hydration process of ZP-cement system and the secondary hydration reaction of ZP through adsorption-dispersion mechanism and complexation, which enhances the strength of cement mortar to a certain extent by improving the uniformity and compactness of hydration products.

Key words: zeolite powder, grinding & enhancing aid, activation, adsorption-dispersion mechanism, complexation

中图分类号:

TQ172

王信刚, 陈涛, 赵华, 李玉洁. 二乙醇单异丙醇胺-三异丙醇胺激发沸石粉后期活性机理研究[J]. 硅酸盐通报, 2021, 40(9): 2891-2897.

WANG Xingang, CHEN Tao, ZHAO Hua, LI Yujie. Late Activity Mechanism of Zeolite Powder Activated by Diethanol-Isopropanolamine and Triisopropanolamine[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(9): 2891-2897.

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