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Uniaxial Tensile and Compressive Stress-Strain Behavior of Multi-scale Fiber-reinforced Ultra-high Performance Concrete
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Wenhua ZHANG1, Zixiang ZHANG1, Pengyu LIU1, Yunsheng ZHANG2, 3, Chunxiao ZHANG4, Wei SHE2
Journal of the Chinese Ceramic Society | 2020, 48(8) : 1155 - 1167
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Journal of the Chinese Ceramic Society | 2020, 48(8): 1155-1167
• Special Issue for Ultra-high Performance ConcreteⅠ •
Uniaxial Tensile and Compressive Stress-Strain Behavior of Multi-scale Fiber-reinforced Ultra-high Performance Concrete
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Wenhua ZHANG1, Zixiang ZHANG1, Pengyu LIU1, Yunsheng ZHANG2, 3, Chunxiao ZHANG4, Wei SHE2
Affiliations
  • 1.Department of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
  • 2.Department of Materials Science and Engineering, Southeast University, Nanjing 211189, China
  • 3.College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
  • 4.National Defense Engineering Institute, Academy of Military Science of PLA, Luoyang 471023, Henan, China

    • ZHANG Wenhua (1982-), male, Ph. D., Associate Professor. E-mail:

About Author:

ZHANG Wenhua (1982-), male, Ph. D., Associate Professor. E-mail:

Published: 2020-08-20 doi: 10.14062/j.issn.0454-5648.20200179
Outline
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A nano-, micron-, and millimeter-sized multi-scale fiber composite reinforced ultra-high performance concrete (UHPC) was proposed. The mechanical properties of UHPC can be improved by suppressing the defects of different sizes with different fibers. Carbon nanotubes, micron-sized calcium carbonate whiskers, and millimeter-sized steel fibers were used to design 7 groups of UHPC specimens. The axial tensile and compressive stress-strain curves of UHPC were measured. The results show that the initial crack strength and strain of UHPC are determined by the millimeter-sized steel fiber in a macro-scale. However, micron- and nano-sized fibers have little effect on the initial crack strength and strain. The addition of calcium carbonate whiskers and carbon nanotubes changes the tensile behavior of UHPC specimens after cracking, thus enhancing the strain hardening capability. The tensile and compressive properties of UHPC with different sizes of fibers are similar. The addition of calcium carbonate whisker has a positive effect rather than that of carbon nanotube when mixing with steel fiber. The effect becomes optimum when adding calcium carbonate whiskers and carbon nanotubes.

ultra-high performance concrete  /  multi-scale  /  fiber  /  calcium carbonate whisker  /  carbon nanotubes
张文华, 张仔祥, 刘鹏宇, 张云升, 张春晓, 佘伟. 多尺度纤维增强超高性能混凝土的轴心抗拉和抗压行为. 硅酸盐学报, 2020 , 48 (8) : 1155 -1167 . DOI: 10.14062/j.issn.0454-5648.20200179
Wenhua ZHANG, Zixiang ZHANG, Pengyu LIU, Yunsheng ZHANG, Chunxiao ZHANG, Wei SHE. Uniaxial Tensile and Compressive Stress-Strain Behavior of Multi-scale Fiber-reinforced Ultra-high Performance Concrete[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (8) : 1155 -1167 . DOI: 10.14062/j.issn.0454-5648.20200179
Appendix
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Year 2020 volume 48 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20200179
  • Receive Date：2020-03-16
  • Online Date：2026-10-29
  • Published：2020-08-20
Article Data
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History
  • Received：2020-03-16
  • Revised：2020-04-20
Funding
Affiliations
    1.Department of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
    2.Department of Materials Science and Engineering, Southeast University, Nanjing 211189, China
    3.College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
    4.National Defense Engineering Institute, Academy of Military Science of PLA, Luoyang 471023, Henan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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