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Scale Effect of Flexural Strength on Ultra-high Performance Concrete
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Jie SU1, 2, Caijun SHI1, 2, Hongjie QIN1, Xiang ZHANG1
Journal of the Chinese Ceramic Society | 2020, 48(11) : 1740 - 1746
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Journal of the Chinese Ceramic Society | 2020, 48(11): 1740-1746
• Special Issue for Ultra-high Performance Concrete Ⅱ •
Scale Effect of Flexural Strength on Ultra-high Performance Concrete
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Jie SU1, 2, Caijun SHI1, 2, Hongjie QIN1, Xiang ZHANG1
Affiliations
  • 1.Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, Hunan University, Changsha 410082, China
  • 2.College of Civil Engineering, Hunan University, Changsha 410082, China

    • SU Jie (1979-), male, Ph. D., Associate Professor. E-mail:

About Author:

SU Jie (1979-), male, Ph. D., Associate Professor. E-mail:

Published: 2020-11-20 doi: 10.14062/j.issn.0454-5648.20200049
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The flexural strength of ultra-high performance concrete prism specimens with three kinds of strength grades, two types of steel fibers and four groups of fiber contents was determined to investigate the effects of strength grade, steel fiber and fiber content on the flexural strength and its size effect of ultra-high performance concrete. The results show that the size effect of the flexural strength becomes more obvious as the strength grade increases. The scale effect of the flexural strength of the specimen with a strength grade of R160 is 1.26 times greater than that of the specimen with a strength grade of R120. The content of steel fiber has an effect on the size effect of the flexural strength. The larger the content of steel fiber is, the more pronounced the size effect will be. The flexural strength of specimens with straight fiber and hook fiber and strength grade of R120 at a fiber content 3% (volume fraction) is 71% and 78% greater than that of the specimens without steel fiber reinforcement, respectively. The size conversion factor for the flexural strength of ultra-high performance concrete with different strength grades was given. The calculation formulas for the size effect law of the flexural strength of ultra-high performance concrete were proposed.

ultra-high performance concrete  /  flexural strength  /  size effect  /  steel fiber
苏捷, 史才军, 秦红杰, 张祥. 超高性能混凝土抗折强度尺寸效应. 硅酸盐学报, 2020 , 48 (11) : 1740 -1746 . DOI: 10.14062/j.issn.0454-5648.20200049
Jie SU, Caijun SHI, Hongjie QIN, Xiang ZHANG. Scale Effect of Flexural Strength on Ultra-high Performance Concrete[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (11) : 1740 -1746 . DOI: 10.14062/j.issn.0454-5648.20200049
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Year 2020 volume 48 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20200049
  • Receive Date：2020-01-31
  • Online Date：2026-10-29
  • Published：2020-11-20
Article Data
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History
  • Received：2020-01-31
  • Revised：2020-03-09
Funding
Affiliations
    1.Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, Hunan University, Changsha 410082, China
    2.College of Civil Engineering, 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
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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