重庆大学学报2025，Vol.48Issue(1)：90-97,8.DOI:10.11835/j.issn.1000-582X.2025.01.009
工程水泥基复合材料与锈蚀钢筋黏结性能研究
Experimental study on bond performance between engineered cementitious composite and corroded rebars
摘要
Abstract
This study investigates the bond failure mechanism between engineered cementitious composite(ECC)and corroded rebars through pull-out experiments.The effects of corrosion rate,bond anchorage length,rebar diameter,and fiber content on bond performance are analyzed.The results show that the bond stress-slip curve can be divided into:micro-slip,slip,failure and residual phases.All specimens exhibit shear pull-out failure as the primary failure mode.The bond strength initially increases and then decreases with the corrosion rate and there is a critical corrosion rate resulting in the warimized bond strength.For rebars with a 10％corrosion rate,bond strength decreases as anchorage length and rebar diameter increase.Additionally,increasing the fiber content enhances the bond toughness index and bond strength initially,followed by a decline.The optimum performance,including maximum toughness and crack resistance,is observed at a fiber content of 2％.关键词
工程水泥基复合材料/锈蚀钢筋/拉拔试验/黏结强度/黏结韧性指数Key words
engineered cementitious composite/corroded rebar/pull-out experiment/bond strength/bond toughness index分类
土木建筑引用本文复制引用
李鑫平,车佳玲,刘海峰,王丹..工程水泥基复合材料与锈蚀钢筋黏结性能研究[J].重庆大学学报,2025,48(1):90-97,8.基金项目
国家自然科学基金资助项目(52068060).Supported by National Natural Science Foundation of China(52068060). （52068060）
