激发剂对钢渣基掺合料性能的影响研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (2): 572-581.

激发剂对钢渣基掺合料性能的影响研究

梁延秋¹, 许世斌¹, 夏举佩¹, 谭艳霞²

1.昆明理工大学化学工程学院,昆明 650500;
2.昆明冶金高等专科学校环境与化工学院,昆明 650033

收稿日期:2021-07-21 修回日期:2021-09-24 出版日期:2022-02-15 发布日期:2022-03-01
通讯作者: 谭艳霞,讲师。E-mail:tanyanxia588@126.com
作者简介:梁延秋(1998—),男,硕士研究生。主要从事固废处理的研究。E-mail:2871410732@qq.com
基金资助:
国家自然科学基金(21566018)

Effect of Activator on Properties of Steel Slag Based Admixtures

LIANG Yanqiu¹, XU Shibin¹, XIA Jupei¹, TAN Yanxia²

1. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2. Faculty of Environment and Chemical Engineering, Kunming Metallurgy College, Kunming 650033, China

Received:2021-07-21 Revised:2021-09-24 Online:2022-02-15 Published:2022-03-01

摘要/Abstract

摘要： 本文以钢渣基掺合料(steel slag based admixtures, GKF)为研究对象,在单因素试验的基础上,通过正交试验探索了激发剂Na₂SO₄、硅渣和脱硫石膏三类激发剂复配最佳方案,最优质量配比为Na₂SO₄ 2.0%,硅渣0.5%,脱硫石膏1.5%。研究表明,在最佳复合激发剂掺量及配合比下,用50%的GKF替代P·Ⅰ 42.5制备的胶砂试件在3 d、7 d和28 d活性分别为77.3%、85.9%和96.6%,与未加激发剂组相比,活性分别提高量了24.2%、25.4%和22.4%。借助XRD、SEM对其水化物矿物结构及微观形貌分析,结果表明,复合激发剂有助于GKF的水化,提高试件C-S-H和AFt的含量,使其结构更加紧密。

关键词: 钢渣, 激发剂, 活性, 掺合料, 力学性能, 水化

Abstract: In this paper, steel slag based admixtures (GKF) were taken as the research object. Based on the single factor experiment, the best combination scheme of activator Na₂SO₄, silicon slag and desulfurized gypsum is investigated by orthogonal experiment. The suitable mass proportion is 2.0%Na₂SO₄, 0.5%silicon slag and 1.5%desulfurized gypsum, The results show that the activity of the mortar prepared by replacing P·I 42.5 with 50%GKF is 77.3%, 85.9% and 96.6% at 3 d, 7 d and 28 d, respectively. Compared with the group without activator, the activity increases by 24.2%, 25.4% and 22.4%, respectively. XRD and SEM were used to analyze the structure and micro morphology of the hydrated minerals. The results show that the composite activator is helpful to the hydration of GKF, which increases the content of C-S-H and AFt, and makes the structure more compact.

Key words: steel slag, stimulant, activity, admixture, mechanical property, hydration

中图分类号:

X751

梁延秋, 许世斌, 夏举佩, 谭艳霞. 激发剂对钢渣基掺合料性能的影响研究[J]. 硅酸盐通报, 2022, 41(2): 572-581.

LIANG Yanqiu, XU Shibin, XIA Jupei, TAN Yanxia. Effect of Activator on Properties of Steel Slag Based Admixtures[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(2): 572-581.

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