玄武岩纤维筋与玄武岩纤维煤矸石混凝土的黏结性能研究

doi:10.19936/j.cnki.2096-8000.20260728.007

复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (7): 57-65.DOI: 10.19936/j.cnki.2096-8000.20260728.007

玄武岩纤维筋与玄武岩纤维煤矸石混凝土的黏结性能研究

李坤¹, 刘华新^2*, 刘镇荣²

1.辽宁铁道职业技术学院铁道工程学院,锦州 121001;
2.辽宁工业大学土木建筑工程学院,锦州 121001

收稿日期:2026-01-22 出版日期:2026-07-28 发布日期:2026-08-06
通讯作者: 刘华新(1966—),男,博士,教授,主要从事新型土木工程材料理论研究与应用,lgliuhuaxin@163.com。
作者简介:李坤(1982—),男,硕士,副教授,主要从事新型土木工程材料理论研究与应用,likunbeyond@126.com。
基金资助:
辽宁省教育厅科学基金项目(LTKY2024111)

Research on the bonding performance of BFRP bars and basalt fiber coal gangue concrete

LI Kun¹, LIU Huaxin^2*, LIU Zhenrong²

1. College of Railway Engineering, Liaoning Railway Vocational and Technical College, Jinzhou 121001, China;
2. School of Civil Engineering and Architecture, Liaoning University of Technology, Jinzhou 121001, China

Received:2026-01-22 Online:2026-07-28 Published:2026-08-06

摘要/Abstract

摘要： 为研究BFRP筋与自燃煤矸石骨料混凝土之间的黏结性能,采用中心拉拔试验,分析了煤矸石细骨料替代率和玄武岩纤维体积分数对界面黏结行为的影响,并对典型黏结滑移模型的适用性进行了对比。试验结果表明,BFRP筋与煤矸石混凝土的界面破坏模式主要为劈裂破坏和拔出破坏。适量煤矸石细骨料可显著提升界面黏结性能;当替代率为25%时,峰值黏结强度达到最大;而替代率进一步提高时,会因骨料孔隙率较大导致黏结性能下降。玄武岩纤维对界面性能具有明显增强作用,黏结强度随纤维体积分数增加呈先增后降趋势,其中0.15%为最优掺量。模型对比结果表明,CMR模型能够较准确地描述BFRP筋与煤矸石混凝土的黏结-滑移关系。本研究可为煤矸石资源化利用及BFRP筋混凝土结构设计提供参考。

关键词: BFRP筋, 煤矸石混凝土, 黏结性能, 本构模型, 玄武岩纤维

Abstract: To investigate the bond performance between BFRP bars and spontaneous combustioncoal gangue aggregate concrete, a centralpull-out test was conducted to analyze the effects of the coal gangue fine aggregate replacement rate and basalt fiber volume fraction on interfacial bond behavior. The applicability of a typical bond-slip model was also evaluated. The experimental results show that the main interfacial failure modes between the BFRP bar and the coal gangue concrete are splitting failure and pull-out failure. An appropriate amount of coal gangue fine aggregate can significantly improve the interfacial bond performance. The peak bond strength reaches its maximum when the replacement rate is 25%, while further increases in the replacement rate lead to a decrease in bond performance due to the higher porosity of the aggregate. Basalt fibers have a significant reinforcing effect on interfacial properties; the bond strength initially increases and then decreases with increasing fiber volume fraction, with 0.15% being the optimal fraction. Model comparison results show that the CMR model can accurately describe the bond-slip relationship between the BFRP bar and the coal gangue aggregate concrete. This study can provide a reference for the resource utilization of coal gangue and the design of BFRP-reinforced concrete structures.

Key words: BFRP bar, coal gangue concrete, bond performance, constitutive model, basalt fibers

中图分类号:

TB332

李坤, 刘华新, 刘镇荣. 玄武岩纤维筋与玄武岩纤维煤矸石混凝土的黏结性能研究[J]. 复合材料科学与工程, 2026, 0(7): 57-65.

LI Kun, LIU Huaxin, LIU Zhenrong. Research on the bonding performance of BFRP bars and basalt fiber coal gangue concrete[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(7): 57-65.

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玄武岩纤维筋与玄武岩纤维煤矸石混凝土的黏结性能研究

Research on the bonding performance of BFRP bars and basalt fiber coal gangue concrete

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