基于电化学阻抗分析的多因素作用下锚杆-砂浆界面黏结性能研究

王旭晨; 柯睿; 王亮清; 朱悦; 吕萌; 郑罗斌; 孙自豪

doi:10.19509/j.cnki.dzkq.tb20230622

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基于电化学阻抗分析的多因素作用下锚杆-砂浆界面黏结性能研究

更新时间：2026-11-05

- 基于电化学阻抗分析的多因素作用下锚杆-砂浆界面黏结性能研究
- Bulletin of Geological Science and Technology Vol. 44, Issue 5, Pages: 215-224(2025)
- 作者机构：
  
  中国地质大学(武汉)工程学院
- 作者简介：
- 基金信息：
- DOI：10.19509/j.cnki.dzkq.tb20230622
  CLC： TU476
- Online First：21 March 2025，
  
  Published：21 March 2025
- 稿件说明：
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王旭晨, 柯睿, 王亮清, et al. 基于电化学阻抗分析的多因素作用下锚杆-砂浆界面黏结性能研究[J]. Bulletin of Geological Science and Technology, 2025, 44(5): 215-224.
DOI：

王旭晨, 柯睿, 王亮清, et al. 基于电化学阻抗分析的多因素作用下锚杆-砂浆界面黏结性能研究[J]. Bulletin of Geological Science and Technology, 2025, 44(5): 215-224. DOI： 10.19509/j.cnki.dzkq.tb20230622.

摘要

影响锚杆-砂浆界面黏结性能的因素众多，而目前对该界面黏结性能的研究聚焦于单因素的影响，多因素作用下界面黏结性能的研究仍留有空白。以锚杆-砂浆为研究对象，采用电化学阻抗谱测试技术获取了不同影响因素下的锚杆-砂浆界面状态以及电化学参数，通过拉拔试验获取了锚杆-砂浆界面黏结强度，并结合电化学参数，探究了试样养护完成时，电化学参数与拉拔荷载之间的关系，分析了细砂粒径、锚杆直径和水灰比3个因素对锚杆-砂浆界面黏结性能的影响。由正交试验敏感性分析可知，试样的拉拔荷载主要受锚杆直径控制，孔隙溶液电阻（R

）主要受水灰比控制，电荷转移电阻(R

)则没有明显的控制性因素；在试样养护完成时，受3个因素的影响，锚杆-砂浆界面会出现钝化膜完整与钝化膜不完整2种状态。研究结果表明，在试验所选择的范围内，拉拔荷载会随着细砂粒径的增大和水灰比的减小而增大，并且试样的拉拔荷载与孔隙溶液电阻（R

）和电荷转移电阻(R

)呈正相关。研究成果对锚固结构砂浆配比及应用中的有效性验证具有重要意义。

Abstract

ObjectiveThe bonding performance of the anchor-mortar interface is influenced by multi factors

yet existing studies predominantly focus on single-factor effects

leaving a gap in understanding the combined impact of multiple factors. This study aims to address this gap by systematically investigating the interfacial bonding performance under multifactorial conditions. MethodsThe anchor-mortar interface is taken as the research object. Electrochemical impedance spectroscopy is used to characterize the interfacial state and derive electrochemical parameters under different varying conditions. Pullout tests are conducted to quantify the bond strength of the anchor-mortar interface. By correlating electrochemical parameters with pullout load data at the completion of sample curing

the relationship between these parameters and interfacial performance is established. Additionally

the influence of the three factors on the bonding performance of the anchor-mortar interface is analyzed. ResultsSensitivity analysis of the orthogonal test results reveals that the pullout load is predominantly governed by the anchor rod diameter

whereas the pore solution resistance (Rs) is primarily influenced by the water-cement ratio. No dominant factor is identified for the charge transfer resistance (Rct). During the early curing stage

two distinct interfacial states are observed under the combined influence of the three factors: A fully developed passivation film and partially developed passivation film. Within the tested parameter range

the pullout load increases with larger fine sand particle sizes and lower water-cement ratios. A positive correlation is observed between the pullout load and both the pore solution resistance (Rs) and charge transfer resistance (Rct). ConclusionThese findings provide critical insights for optimizing the formulation and application of anchored structural mortar.

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