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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (2): 695-711.DOI: 10.16552/j.cnki.issn1001-1625.2025.0812

• 道路材料 • 上一篇    下一篇

矿渣-粉煤灰地聚物注浆材料配合比优化研究

刘梅芳1(), 刘建正2, 胡力群1(), 高胜发2, 刘家宏2, 李国超2   

  1. 1.长安大学公路学院,西安 710064
    2.青海交通投资有限公司,西宁 810003
  • 收稿日期:2025-08-11 修订日期:2025-09-29 出版日期:2026-02-20 发布日期:2026-03-09
  • 通信作者: 胡力群,博士,教授。E-mail:hlq123@126.com
  • 作者简介:刘梅芳(2001—),女,硕士研究生。主要从事道路材料的研究。E-mail:l15526009021@163.com
  • 基金资助:
    青海省交通科技项目(GM2021咨04)

Mix Ratio Optimization of Slag-Fly Ash Geopolymer Grouting Materials

LIU Meifang1(), LIU Jianzheng2, HU Liqun1(), GAO Shengfa2, LIU Jiahong2, LI Guochao2   

  1. 1. School of Highway,Chang’an University,Xi’an 710064,China
    2. Qinghai Transportation Investment Co. ,Ltd. ,Xining 810003,China
  • Received:2025-08-11 Revised:2025-09-29 Published:2026-02-20 Online:2026-03-09

摘要:

为了给地聚物注浆材料在道路非开挖注浆加固等工程中的推广应用提供配合比设计参考与理论支撑,针对矿渣-粉煤灰地聚物注浆材料(SFGGM),采用四因素四水平正交试验,通过极差与方差分析得到了水胶比、碱当量、水玻璃模数及粉煤灰掺量对流动度、凝结时间、干缩率及力学性能等多项关键指标的影响。在此基础上,结合AHP-熵值法进行多指标综合权重分析,选出兼顾工作性能、体积稳定性及力学性能的最优配合比方案。结果表明:水胶比对流动度的影响最显著,随着水胶比增加,浆体流动性明显提升;碱当量是控制凝结时间与干缩率的主导因素,碱当量过高会导致凝结时间缩短和干缩率增加;粉煤灰掺量是影响抗压强度与抗折强度的关键因素,掺量过高导致抗压强度与抗折强度下降;适度提高碱当量和水玻璃模数有助于促进强度发展。极差分析与方差分析得出的各性能指标的主影响因素一致,综合性能最优的配合比为水胶比0.6、水玻璃模数1.6、碱当量6%(质量分数)、粉煤灰掺量0.4(占硅铝源灰料总质量的比例)。

关键词: 地聚物注浆材料, 最优配合比, 正交试验, AHP-熵值法, 极差分析, 方差分析

Abstract:

In order to provide mix ratio design references and theoretical support for the promotion and application of geopolymer grouting materials in road trenchless grouting reinforcement and other projects, for slag-fly ash geopolymer grouting materials (SFGGM), the influences of water-to-binder ratio, alkali equivalent, sodium silicate modulus and fly ash content on multiple key indicators such as fluidity, setting time, drying shrinkage rate and mechanical property were obtained through range analysis and analysis of variance by using four-factor and four-level orthogonal experiments. On this basis, a comprehensive weight analysis of multiple indicators was conducted with AHP-entropy method to select the optimal mix ratio scheme that takes into account workability, volume stability and mechanical property. The results show that the water-to-binder ratio has the most significant impact on fluidity. As the water-to-binder ratio increases, the fluidity of slurry improves significantly. The alkali equivalent is the dominant factor controlling the setting time and drying shrinkage rate. If alkali equivalent is too high, it will lead to shorten setting time and increased drying shrinkage rate. The fly ash content is a key factor affecting compressive strength and flexural strength. Excessive content leads to a decrease in compressive strength and flexural strength. Moderately increasing the alkali equivalent and sodium silicate modulus is conducive to promoting strength development. The main influencing factors of each performance index obtained from range analysis and analysis of variance are consistent. The optimal ratio for comprehensive performance is as follows: water-to-binder ratio 0.6, sodium silicate modulus 1.6, alkali equivalent 6%(mass fraction), and fly ash content 0.4(the proportion of total mass of silicon and aluminum source ash).

Key words: geopolymer grouting material, optimal mix ratio, orthogonal experiment, AHP-entropy method, range analysis, analysis of variance

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