复合材料科学与工程Issue(3)：87-95,9.DOI:10.19936/j.cnki.2096-8000.20250328.012
不同孔径碳纤维三向织物复合材料增强混凝土轴压研究
Research on axial compression of concrete reinforced with carbon fibre triaxial fabric composites with different pore sizes
孙婷婷 1张洪华 1Muhammad Usman Ghani 1李炜2
作者信息
- 1. 东华大学 纺织学院,上海 201620||东华大学 民用航空复合材料协同创新中心,上海 201620
- 2. 东华大学 纺织学院,上海 201620||东华大学 民用航空复合材料协同创新中心,上海 201620||产业用纺织品教育部工程研究中心,上海 201620
- 折叠
摘要
Abstract
Three sizes of T300 carbon fibres were selected for the preparation of triaxial woven fabric(TWF)resin-based composites with different pore sizes for concrete reinforcement.The three-dimensional displacement and strain fields were obtained using 3D-DIC technology,which visually reflected the evolution of the fabric expansion and shedding on the surface of the specimen and the strain extension of different yarns.The results show that the smaller the pore size of the triaxial fabric,the more significant the restraining effect of the carbon fibre triaxial fabric composite in compression.Compared with unconfined concrete,the peak load of TWF-24K was enhanced by 38.7%,TWF-12K by 41.2%and TWF-6K by 49.9%.At a certain porosity,the small pore size TWF enhances the compressive strength and ductility of concrete to a greater extent;the strain-time curves of TWF-6K specimens have more consistent trends and the stress distribution inside the specimens is more uniform.Combined with the 3D-DIC technique to obtain the displacement and strain field evolution laws for the whole time series from loading to dam-age,it shows that TWF-6K provides the best restraining effect compared to both TWF-12K and TWF-24K warp and weft yarns by evenly sharing the axial compression and radial tensile forces.关键词
碳纤维三向织物/混凝土加固/3D-DIC/位移场/三维应变场/复合材料Key words
carbon fibre triaxial woven fabrics/concrete reinforcement/3D-DIC/displacement field/3D strain field/composites分类
通用工业技术引用本文复制引用
孙婷婷,张洪华,Muhammad Usman Ghani,李炜..不同孔径碳纤维三向织物复合材料增强混凝土轴压研究[J].复合材料科学与工程,2025,(3):87-95,9.
