王刚, 蔡晋,等.纳米材料改性硅酸盐水泥基注浆材料试验研究[J].河南理工大学学报（自然科学版）,2026,45(1):197-204.

WANG G, CAI J,et al.Experimental study on nano-modified Portland cement-based grouting materials[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(1):197-204.

纳米材料改性硅酸盐水泥基注浆材料试验研究

王刚1,2, 蔡晋1,2

1.山东科技大学 山东省土木工程防灾减灾重点实验室，山东 青岛  266590；2.山东科技大学 土木工程与建筑学院，山东 青岛  266590

摘要: 目的 针对岩体微裂隙注浆加固防渗工程出现的问题，开展纳米材料改性硅酸盐水泥基注浆材料试验研究。 方法 通过田口-灰色关联优化分析方法和正交试验研制一种纳米材料改性的硅酸盐水泥基注浆材料，并基于田口方法的信噪比分析研究纳米碳酸钙掺量、聚羧酸减水剂掺量、超细粉煤灰掺量和水灰比对注浆材料的黏度、析水率、凝结时间和结石体强度等基本性能的影响规律。 结果 正交试验结果表明：通过田口-灰色关联优化分析得出的最优配比下的注浆材料具有较好的流动性能和力学性能，保证了注浆材料的可注性和加固效果。信噪比分析表明：纳米碳酸钙对注浆材料流动性能影响较大，随着纳米碳酸钙掺量增加，注浆材料黏度升高，析水率逐渐降低，结石体28 d强度先增加后减小；聚羧酸减水剂有助于降低注浆材料黏度，但会导致凝结时间延长、析水率提高，对结石体28 d强度影响较小；超细粉煤灰有助于降低注浆材料黏度，但对缩短凝结时间和提高结石体28 d强度不利；水灰比对析水率、凝结时间和结石体28 d强度的影响最为显著，随着水灰比增加，注浆材料的流动性能改善，但会导致凝结时间延长、结石体28 d强度降低。 结论 纳米材料改性硅酸盐水泥基注浆材料具有较好的流动性、稳定性和力学性能，研究结果可为实际注浆工程的材料选择提供理论和试验依据。

关键词:注浆材料;正交试验;田口方法;纳米碳酸钙;微裂隙

doi:10.16186/j.cnki.1673-9787.2024030080

基金项目:国家自然科学基金资助项目（52079077）

收稿日期:2024/03/29

修回日期:2024/06/14

出版日期:2025-12-03

Experimental study on nano-modified Portland cement-based grouting materials

Wang Gang1,2, Cai Jin1,2

1.Shandong Key Laboratory of Civil Engineering， Disaster Prevention and Mitigation， Shandong University of Science and Technology， Qingdao  266590， Shandong， China；2.College of Civil Engineering and Architecture， Shandong University of Science and Technology， Qingdao  266590， Shandong， China

Abstract: Objectives To address issues in rock mass microfracture grouting for reinforcement and seepage control， this study investigated nano-modified Portland cement-based grouting materials. Methods A nano-modified grouting material was developed using Taguchi-grey correlation optimization combined with orthogonal tests. Signal-to-noise ratio analysis based on the Taguchi method was applied to systematically evaluate the effects of nano-CaCO₃， polycarboxylate superplasticizer， ultrafine fly ash， and water–cement ratio on the grouting material’s viscosity， bleeding rate， setting time， and 28 d stone body strength. Results The orthogonal tests showed that the material prepared under the optimal ratio from Taguchi-grey correlation optimization exhibited excellent fluidity and mechanical properties， ensuring injectability and reinforcement performance. Signal-to-noise ratio analysis indicated： nano-CaCO₃ significantly increased viscosity while reducing bleeding rate； 28 d stone strength first increased and then decreased with increasing nano-CaCO₃ content. Polycarboxylate superplasticizer reduced viscosity but prolonged setting time and slightly increased bleeding rate， with minor effect on 28 d strength. Ultrafine fly ash also decreased viscosity but was unfavorable for shortening setting time or improving 28 d strength. The water-cement ratio had the most pronounced effect on bleeding rate， setting time， and 28 d strength： increasing water-cement ratio improved fluidity but prolonged setting and reduced 28 d strength. Conclusions The developed nano-modified Portland cement-based grouting material demonstrated good fluidity， stability， and mechanical performance. These findings provide theoretical and experimental guidance for material selection in practical grouting engineering.

Key words:grouting material;orthogonal test;Taguchi method;nano-CaCO;microfracture