土木工程与管理学报2017，Vol.34Issue(2)：112-118,7.
锈蚀钢筋与钢纤维混凝土粘结性能
Bond Behavior Between Corroded Reinforcement and SFRC
摘要
Abstract
Steel fiber reinforced concrete has been used in civil engineering extensively, due to its fine crack resistance and toughness capacity. In the case of corroded members repaired using SFRC, the bond behavior between corroded rebar and SFRC is a key factor for the mechanical properties of repaired members. The bond behaviors of corroded rebar and SFRC were studied through central pull-out tests in this paper. The experimental results indicate that the addition of steel fiber can restain the propagation of concrete cracks effectively, improve bond stiffness, bond toughness and ultimate bond strength. The bond stiffness decreased with the increase of corrosion rate. The bond toughness factor, α = A80/Apeak , is used to quantify bond toughness between steel fiber and SFRC, the calculation shows that the bond toughness factor decreased with the increase of corrosion rate. When the corrosion rate increased from 0 to 17%, The ultimate bond strength decreased by 36.3%. Based on the experimental results, an empirical equation, considering corrosion ratio, is proposed for predicting the bond strength, and the calculated result agrees well with the tested.关键词
钢纤维混凝土/锈蚀钢筋/中心拉拔/粘结性能Key words
SFRC/corroded rebar/central pull-out/bond behavior分类
建筑与水利引用本文复制引用
刘泓,侯利军,孙诗游,高鹏..锈蚀钢筋与钢纤维混凝土粘结性能[J].土木工程与管理学报,2017,34(2):112-118,7.基金项目
国家自然科学基金(51408186) （51408186）
江苏省自然科学基金(BK20140853) （BK20140853）
水利部公益性行业科研专项(201501036) （201501036）
中央高校基本科研业务费(2015B20914) （2015B20914）
中央高校基本科研业务费专项资金(2016B51514). （2016B51514）
