Abstract: In this work, bonding behavior of steel bar reinforcement in ultra-high performance concrete (UHPC) was investigated. A series of bar pull-out tests was performed using HRB400 steel bar with nominal diameter of 12 mm, 16 mm, 20 mm, 25 mm and 28 mm. Other experimental parameters include three anchorage lengths (3d, 4d, 5d) and three fiber dosage (1%, 2%, 2.5%).Results showed that an effective anchorage length of 3d—5d is acquired for all bars, and the ultimate bonding strength shows a downward trend as anchorage lengths increases. Anchorage length of bar is suggested to be more than 4d, in order to ensure yield fracture of steel bars. Steel fiber and its resulting strain hardening effect have a positive effect on the bonding behavior, and are more pronounced with decreased protective thickness of bars.
韩方玉, 刘建忠, 刘加平, 马骉, 沙建芳, 王兴龙. 基于超高性能混凝土的钢筋锚固性能研究[J]. 材料导报, 2019, 33(z1): 244-248.
HAN Fangyu, LIU Jianzhong, LIU Jiaping, MA Biao, SHA Jianfang, WANG Xinglong. Study on Anchorage Behavior of Steel Bar in Ultra-high Performance Concrete. Materials Reports, 2019, 33(z1): 244-248.
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