两种改性剂对注浆材料流变性能的影响

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (9): 3135-3142.

两种改性剂对注浆材料流变性能的影响

胡阳¹, 刘亚炜¹, 吴颖辉¹, 鲁刘磊¹, 黄文昊¹, 牛伟锋², 李生生³, 汪峻峰¹

1.深圳大学土木与交通工程学院,深圳 518060;
2.山西焦煤霍州煤电三交河煤矿,临汾 031600;
3.北京中煤矿山工程有限公司,北京 100013

收稿日期:2023-05-15 修订日期:2023-06-20 出版日期:2023-09-15 发布日期:2023-09-14
通信作者: 鲁刘磊,博士,讲师。E-mail:luliulei@szu.edu.cn
汪峻峰,博士,教授。E-mail:drjunfengwang2010@163.com
作者简介:胡阳(1998—),男,硕士研究生。主要从事注浆材料改性方面的研究。E-mail:huyang2021@email.szu.edu.cn
基金资助:
海南省重点研发项目(ZDYF2022SHFZ322)

Effects of Two Modifiers on RheologicalProperties of Grouting Materials

HU Yang¹, LIU Yawei¹, WU Yinghui¹, LU Liulei¹, HUANG Wenhao¹, NIU Weifeng², LI Shengsheng³, WANG Junfeng¹

1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China;
2. Shanxi Coking Coal Huo Zhou Coal Electricity Sanjiaohe Coal Mine, Linfen 031600, China;
3. Beijing China Coal Engineering Co., Ltd., Beijing 100013, China

Received:2023-05-15 Revised:2023-06-20 Online:2023-09-15 Published:2023-09-14

摘要/Abstract

摘要： 为了提高加固、防渗堵漏等工程的注浆质量,往往需要添加改性剂来调控注浆材料的流变性能。本文研究了两种改性剂(早强型注浆改性剂SX-ZJ-Z和高强型注浆改性剂SX-ZJ-G)对注浆材料流变性能的影响,测试了它们在不同掺量(10%和20%,质量分数)以及不同水胶比(W/B=0.25、0.30、0.35和0.40)下的凝结时间、流动度、塑性黏度和屈服应力,并分析了Bingham和Modified Bingham模型对注浆材料流变曲线的拟合度。结果表明:添加SX-ZJ-G能显著延长注浆材料的凝结时间,而添加SX-ZJ-Z会缩短注浆材料的凝结时间;SX-ZJ-G掺入后发挥“滚珠”效应,能大幅提高注浆材料的流动性,但是添加SZ-ZJ-Z对注浆材料的流动性几乎没影响。添加改性剂使水泥浆体由牛顿流体转变为屈服应力流体,呈现出非线性的剪切应力曲线,Modified Bingham模型较Bingham模型有更好的拟合效果。在W/B=0.30、0.35和0.40时,掺入SX-ZJ-Z对注浆材料的塑性黏度和屈服应力影响不大;SX-ZJ-G的掺入极大地降低了水泥浆体的塑性黏度和屈服应力,降幅可达89%以上,改善了注浆材料的流变性能。

关键词: 注浆材料, 流变性能, 流动度, 凝结时间, 塑性黏度, 屈服应力

Abstract: In order to improve the grouting quality of reinforcement, anti-seepage plugging and other projects, it is necessary to adjust rheological properties of grouting materials by adding modifiers. The effects of two modifiers (early strength grouting modifier SX-ZJ-Z and high strength grouting modifier SX-ZJ-G) on rheological properties of grouting materials were studied, and their setting time, fluidity, plastic viscosity and yield stress were tested at different content (10% and 20%,mass fraction) and water-to-binder ratios (W/B=0.25, 0.30, 0.35 and 0.40), and the degree of fitting of Bingham model and Modified Bingham model to their rheological curves was analyzed. The results show that the addition of SX-ZJ-G significantly prolonges coagulation time of grouting materials, while the addition of SX-ZJ-Z shortenes setting time of grouting materials. The addition of SX-ZJ-G exerts the “ball” effect and greatly improves fluidity of grouting materials, but the addition of SZ-ZJ-Z has almost no effect on fluidity of grouting materials. The addition of modifier changes the cement slurry from Newtonian fluid to yield-stress-fluid, showing a nonlinear shear stress curve, and Modified Bingham model had a good fitting effect compared with the Bingham model. When W/B=0.30, 0.35 and 0.40, the addition of SX-ZJ-Z has little effect on plastic viscosity and yield stress of grouting materials. The addition of SX-ZJ-G greatly reduces plastic viscosity and yield stress of cement slurry by more than 90%, and improves rheological properties of grouting materials.

Key words: grouting material, rheological property, fluidity, setting time, plastic viscosity, yield stress

中图分类号:

TU528

胡阳, 刘亚炜, 吴颖辉, 鲁刘磊, 黄文昊, 牛伟锋, 李生生, 汪峻峰. 两种改性剂对注浆材料流变性能的影响[J]. 硅酸盐通报, 2023, 42(9): 3135-3142.

HU Yang, LIU Yawei, WU Yinghui, LU Liulei, HUANG Wenhao, NIU Weifeng, LI Shengsheng, WANG Junfeng. Effects of Two Modifiers on RheologicalProperties of Grouting Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(9): 3135-3142.

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