| SPECIAL TOPIC: UHPC MATERIAL AND ENGINEERING APPLICATION |
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| An Overview on Tensile Behavior of Ultra-high Performance Concrete |
| LIU Jianzhong1, 2, HAN Fangyu1, 2, ZHOU Huaxin1, 2, ZHANG Lihui1, 2, LIU Jiaping2, 3
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1 Jiangsu Sobute New Materials Co. Ltd., Nanjing 211103;
2 State Key Laboratory of High Performance Civil Engineering Materials, Nanjing 210008;
3 School of Materials Science and Engineering, Southeast University, Nanjing 211189 |
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Abstract Highly-effective synergistic interaction between high strength matrix and fiber is the source of outstanding perfor-mance advantages of UHPC, a new type of cement-based materials exhibiting ultra-high strength, high ductility, and excellent durability. From the perspectives of testing method, matrix and fiber, this paper reviews the development status of tensile mechanical behavior of UHPC. It also offers some conclusions and opinions of the authors: tensile behavior of UHPC should be studied using dog-bone sample and exhibits obvious size effect and strong sensitivity to loading rate; one effective approach to improving UHPC's tensile performance is to carefully tailor its composition and size distribution; fiber type has the most remarkable influence with respect to the tensile performance, which can benefit from both the increase of fiber reinforcing factor and the tailoring of fiber distribution. Finally, some suggestions are proposed for the further study in order to promote engineering applications of UHPC.
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Published: 10 December 2017
Online: 2018-05-08
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2017, Vol. 31 
