HE Tusheng, XU Yang, LIU Yang, LI Zaibo, ZHAO Xuguang, ZHAO Sanyin

(School of Civil Engineering, Shaoguan University, Shaoguan 512005, China)

Abstract: In order to study the influence of sampling method, ultrasonic dispersing time, dispersing medium, dispersing agent type and concentration on the dispersing effect of grinding slag powder, the particles of slag powder were characterized by X-ray diffractometer and scanning electron microscope, and the particle size was measured 12 times by laser particle size analyzer to ensure the reliability of particle size data. The influence degree of each factor on the dispersive effect of slag was determined by grey relational degree analysis. The results show that the influence degree of each factor on the dispersing effect of slag powder under the conditions of this experiment is from large to small: dispersing agent (sodium pyrophosphate), dispersing medium (anhydrous ethanol), dispersing agent (oleic acid), dispersing medium (water), ultrasonic dispersing time, sampling method. The optimal dispersing conditions of slag powder are water as dispersing medium, sodium pyrophosphate as dispersing agent (mass concentration is 0.3 g/L) and ultrasonic dispersing time is 20 s.

Keywords: slag powder; dispersing effect; grey relational degree analysis; dispersion condition

文章编号：1008-5548(2020)03-0058-05

DOI:10.13732/j.issn.1008-5548.2020.03.009

中图分类号：TU521.4                             文献标志码：A

收稿日期： 2019-12-05，修回日期：2020-03-13，在线出版时间：2020-04-03 15:26。

基金项目：广东省自然科学基金项目，编号：2020A1515011221；广东省教育厅特色创新项目，编号：2019sn060；广东省大学生创新创业训练计划项目，编号：201810576104；韶关市科技计划项目，编号：2019CS05308；韶关学院重点项目，编号：SZ2016KJ06。

第一作者简介：贺图升(1982—)，男，硕士，副教授，研究方向为建筑材料。E-mail：hts0539@163.com。