INFLUENCE OF STEEL FIBER GEOMETRY ON THE MECHANICAL PERFORMANCE OF ULTRA-HIGH PERFORMANCE FIBER REINFORCED CONCRETE

Yang Songlin; Diao Bo

doi:10.13204/j.gyjz201201027

Volume 42 Issue 1

Dec. 2014

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Yang Songlin, Diao Bo. INFLUENCE OF STEEL FIBER GEOMETRY ON THE MECHANICAL PERFORMANCE OF ULTRA-HIGH PERFORMANCE FIBER REINFORCED CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(1): 140-143,169. doi: 10.13204/j.gyjz201201027

Citation:

Yang Songlin, Diao Bo. INFLUENCE OF STEEL FIBER GEOMETRY ON THE MECHANICAL PERFORMANCE OF ULTRA-HIGH PERFORMANCE FIBER REINFORCED CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(1): 140-143,169. doi: 10.13204/j.gyjz201201027

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INFLUENCE OF STEEL FIBER GEOMETRY ON THE MECHANICAL PERFORMANCE OF ULTRA-HIGH PERFORMANCE FIBER REINFORCED CONCRETE

doi: 10.13204/j.gyjz201201027

Yang Songlin^1,2,
Diao Bo¹

1.
1. Department of Civil Engineering,Beihang University,Beijing 100191,China;
2.
2. China Architecture Design and Research Group,Beijing 100044,China

Received Date: 2010-04-15
Publish Date: 2012-01-20

Abstract

Abstract

The steel fibers used in fiber reinforced concrete were shaped with flattened end or hooked end to strengthen the anchoring effect between the concrete matrix and fibers.However,the mechanical difference of ultra-high performance fiber reinforced concrete(UHPFRC) with these two deformed fibers remains to be confirmed experimentally.In this paper,the end-flattened and end-hooked fibers were used in producing UHPFRC with the fiber volume ratio of 1%,2%,2.5% and 3% to investigate the different fiber reinforcing effect.The results showed that with the fiber volume ratio of 2%,the UHPFRC with end-flattened achieved the best workability and mechanical performance;with the fiber volume ratio of 2%~2.5%,the flexural strength and fracture energy of UHPFRC with end-flattened fibers exceeded that of end-hooked fibers;due to the better anchoring effect,UHPFRC beams with end-hooked fibers behaved more ductile than that with end-flattened fibers after the peak load.
- ultra-high performance fiber reinforced concrete,
- end-flattened fiber,
- end-hooked fiber,
- mechanical performance,
- bending test

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References(26)

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