Materials Reports  2019, Vol. 33 Issue (z1): 244-248 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Study on Anchorage Behavior of Steel Bar in Ultra-high Performance Concrete |
| HAN Fangyu1,2, LIU Jianzhong1,2, LIU Jiaping1,2, MA Biao3, SHA Jianfang1,2, WANG Xinglong1,2
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1 Jiangsu Sobute New Materials Co., Ltd., Nanjing 211103
2 State Key Laboratory of High Performance Civil Engineering Materials, Nanjing 211103
3 Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai 200092 |
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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.
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Published: 05 July 2019
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| About author:: Fangyu Han received his M.S. degree in civil engineering materials from the Southeast University in 2014, and continued his studies in State Key Laboratory of High Performance Civil Engineering Materials of Jiangsu Sobute New Materials Co., Ltd. He is currently focused on researches and application of high and ultra-high performance concrete. |
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