水资源与水工程学报2023，Vol.34Issue(6)：130-138,9.DOI:10.11705/j.issn.1672-643X.2023.06.16
橡胶改性碳纤维-多壁碳纳米管水泥复合材料性能试验与分析
Performance experimental analysis of rubber-modified cement composite reinforced by carbon fiber and multi-walled carbon nanotubes
摘要
Abstract
With the widespread utilization of cement-based composites in water conservancy projects,a paramount focus lies in exploring their durability to ensure the safety of high concrete dams in alpine ter-rains.This research embarked on an exploration by incorporating carbon fiber and multi-walled carbon nanotube double conductive phase fillers into the cement matrix,investigating their impact from three per-spectives,namely,electrical conductivity,mechanical property and frost resistance.Simultaneously,in a sustainable approach of harnessing waste resources,discarded rubber was integrated into the experimen-tal analysis to evaluate its contributions to the mechanical property and frost resistance of the composite.The experimental results showed that the resistivity of the cement-based composite was most significantly changed when the dosage of carbon fiber and multi-walled carbon nanotubes was 0.25%,whereas it reached the lowest when the dosage was 0.3%.Meanwhile,the effect of different applied electric fields on the resistivity was negligible.When the dosage of carbon fiber and multi-walled carbon nanotubes was 0.3%and that of the rubber was 30%,the composite material had the best frost resistance,and the me-chanical properties also met the requirements of engineering applications,with flexural and compressive strengths exceeding 7 MPa and 30 MPa,respectively.These findings usher in innovative technical avenues for enhancing the performance of expansive concrete structures in alpine regions.关键词
水泥基复合材料/多壁碳纳米管/碳纤维/橡胶/电学性能/力学性能/抗冻性能Key words
cement-based composite/multi-walled carbon nanotube/carbon fiber/rubber/electrical property/mechanical property/frost resistance分类
建筑与水利引用本文复制引用
张俊涛,戚颖楠,杨友志,柯雨,张梦溪..橡胶改性碳纤维-多壁碳纳米管水泥复合材料性能试验与分析[J].水资源与水工程学报,2023,34(6):130-138,9.基金项目
国家自然科学基金项目(U2006223) （U2006223）
