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Flexural Properties of Ultra-high Performance Concrete Under Different Temperatures
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Zhi FANG1, 2, Shaokun LIU1, Zhengyu HUANG1, Junting CHEN1
Journal of the Chinese Ceramic Society | 2020, 48(11) : 1732 - 1739
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Journal of the Chinese Ceramic Society | 2020, 48(11): 1732-1739
• Special Issue for Ultra-high Performance Concrete Ⅱ •
Flexural Properties of Ultra-high Performance Concrete Under Different Temperatures
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Zhi FANG1, 2, Shaokun LIU1, Zhengyu HUANG1, Junting CHEN1
Affiliations
  • 1.College of Civil Engineering, Hunan University, Changsha 410082, China
  • 2.Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha 410082, China

    • FANG Zhi (1963-), male, Ph.D., Professor. E-mail:

About Author:

FANG Zhi (1963-), male, Ph.D., Professor. E-mail:

Published: 2020-11-20 doi: 10.14062/j.issn.0454-5648.20200227
Outline
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The bending properties of ultra-high performance concrete (UHPC) at ambient and low temperatures (i.e., 20 ℃ and-20 ℃) were investigated. The results show that the strength and elastic modulus of UHPC increase with decreasing the temperature, and the strength increases more significantly than the elastic modulus. Compared to the corresponding results at 20 ℃, the cubic compressive strength, the prism compressive strength, the splitting tensile strength, the flexural cracking strength, the flexural limit strength and the elastic modulus of UHPC at -20 ℃ are increased by 7.3%, 8.0%, 10.8%, 13.7%, 9.0% and 4.1%, respectively. The flexural deformability and ductility of UHPC decrease with decreasing the temperature. Compared to the corresponding results at 20 ℃, even though the initial crack strain of UHPC at -20 ℃ is increased by 6.3%, resulting from that the flexural cracking strength of UHPC increases more significantly than its elastic modulus, and the peak strain, limit strain, residual strain and ductility index of UHPC at -20 ℃ are decreased by 2.9%, 8.2%, 5.5% and 6.4%, respectively.

ultra-high performance concrete  /  low temperature  /  flexural strength  /  deformability  /  ductility index
方志, 刘绍琨, 黄政宇, 陈俊廷. 不同温度下超高性能混凝土的弯拉性能. 硅酸盐学报, 2020 , 48 (11) : 1732 -1739 . DOI: 10.14062/j.issn.0454-5648.20200227
Zhi FANG, Shaokun LIU, Zhengyu HUANG, Junting CHEN. Flexural Properties of Ultra-high Performance Concrete Under Different Temperatures[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (11) : 1732 -1739 . DOI: 10.14062/j.issn.0454-5648.20200227
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Year 2020 volume 48 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20200227
  • Receive Date：2020-03-30
  • Online Date：2026-10-29
  • Published：2020-11-20
Article Data
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History
  • Received：2020-03-30
  • Revised：2020-04-22
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Affiliations
    1.College of Civil Engineering, Hunan University, Changsha 410082, China
    2.Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha 410082, 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
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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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