工艺与制造英文2022被引 27
多种材料FRP筋单轴拉伸性能研究——钢筋的替代方案
Behavior of FRP rods under uniaxial tensile strength with multiple materials as an alternative to steel rebar
Mohammed M. Attia, Osama Ahmed, Osama Kobesy, Abdel Salam Malek · Suez University
摘要整理
钢筋腐蚀导致钢筋混凝土结构维护成本高、耐久性差。因此需要开发新技术以实现资源的可持续利用,降低建筑成本和维护负担。纤维增强复合材料(FRP)作为传统钢筋的创新替代方案具有广阔前景。本研究系统调查了不同纤维体积分数(Vf)的合成纤维和天然纤维FRP在单轴拉伸载荷下的力学性能。采用手工铺层工艺制备了四种纤维增强复合材料:三种合成纤维(玻璃纤维、尼龙纤维、聚丙烯纤维)和一种天然纤维(黄麻)。研究结果表明,手工铺层工艺的FRP性能与拉挤工艺相近。随着Vf增加,拉伸强度和弹性模量均显著提高,与纤维类型无关。其中,GFRP-3、PFRP-P2、NFRP-N2和JFRP-J3样品的最高拉伸强度分别为971.89 MPa、130.74 MPa、262.54 MPa和178.42 MPa,相比参考样品分别提高26.68%、19.57%、15.44%和26.55%;弹性模量分别改善20.13%、42%、14%和32.93%。显微镜观察表明FRP筋内纤维分布均匀,树脂与纤维浸润良好。研究结果为FRP筋替代传统钢筋提供了重要的力学性能数据支撑。
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