华北水利水电大学学报（自然科学版）2026，Vol.47Issue(2)：103-110,8.DOI:10.19760/j.ncwu.zk.2026028
纳米SiO2和混杂纤维增强环氧树脂水泥基修复材料抗压强度研究
Study on Compressive Strength of Nano-SiO2 and Hybrid Fiber-Reinforced Epoxy Resin Cementitious Repair Materials
摘要
Abstract
[Objective]This study aims to investigate the variation in compressive strength of nano-SiO2 and hybrid fiber-re-inforced epoxy resin cementitious repair materials(NF-ECRM),and to reveal the influence mechanism of epoxy resin emul-sion,nano-SiO2 and polyvinyl alcohol(PVA)-steel hybrid fiber on the compressive strength.[Methods]Cube compressive strength tests were conducted to analyze the effects of the contents of epoxy resin,nano-SiO2,and PVA-steel hybrid fibers on the compressive strength of NF-ECRM.Scanning electron microscope tests were performed to reveal the strengthening mecha-nism of the compressive strength of NF-ECRM.[Results]With the increase in epoxy resin content,the compressive strength of epoxy resin cementitious repair materials(ECRM)and NF-ECRM both showed a decreasing trend.Meanwhile,the com-pressive strength of NF-ECRM gradually increased with the increase in nano-SiO2 content,while it first increased and then de-creased with the increase in PVA fiber content,reaching the peak when the PVA fiber content was 0.9%.[Conclusion]Ep-oxy resin can effectively relieve internal stress in the cementitious repair material matrix and inhibit the formation and expan-sion of micro-cracks.Nano-SiO2 can reduce pore defects of the cementitious repair material matrix and improve the compact-ness of the interfacial transition zone.Moreover,PVA-steel hybrid fiber can significantly enhance the integrity and crack re-sistance of the cementitious repair material matrix.关键词
环氧树脂/纳米SiO2/PVA纤维/钢纤维/抗压强度Key words
epoxy resin/nano-SiO2/PVA fiber/steel fiber/compressive strength分类
建筑与水利引用本文复制引用
吴靖江,张鹏,尉晓雪,张承实,魏士尧..纳米SiO2和混杂纤维增强环氧树脂水泥基修复材料抗压强度研究[J].华北水利水电大学学报（自然科学版）,2026,47(2):103-110,8.基金项目
国家自然科学基金项目(52278283) （52278283）
河南省杰出青年科学基金项目(212300410018). （212300410018）
