Study on Properties of GFRP-Reinforced Concrete Stubs with Hybrid Fibers Under Axial Compression

XIAO Liangli; JI Qinmin; DU Zhuang

doi:10.13204/j.gyjzG20120206

Volume 52 Issue 2

Feb. 2022

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XIAO Liangli, JI Qinmin, DU Zhuang. Study on Properties of GFRP-Reinforced Concrete Stubs with Hybrid Fibers Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 37-41,125. doi: 10.13204/j.gyjzG20120206

Citation:

XIAO Liangli, JI Qinmin, DU Zhuang. Study on Properties of GFRP-Reinforced Concrete Stubs with Hybrid Fibers Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 37-41,125. doi: 10.13204/j.gyjzG20120206

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Study on Properties of GFRP-Reinforced Concrete Stubs with Hybrid Fibers Under Axial Compression

doi: 10.13204/j.gyjzG20120206

College of City Construction, Wuhan University of Science and Technology,Wuhan 430065, China

Received Date: 2020-12-02
Available Online: 2022-06-30
Publish Date: 2022-02-20

Abstract

Abstract

In order to explore the failure mechanism and design method of GFRP-reinforced concrete stubs with hybrid fibers under axial compression, five GFRP-reinforced concrete stubs with bybrid fibers and an ordinary reinforced concrete stub were studied,the failure mode, longitudinal reinforcement strain, concrete compressive strain and ultimate load value of GFRP hybrid-reinforced concrete stubs under axial compression were analyzed. The results showed that the GFRP-reinforced concrete stubs with hybrid fibers had good crack-resistance performances and good integrity after failure; the GFRP-reinforced concrete stubs with hybrid fibers had an obvious plastic stage under axial compression, and the fibers could effectively restrain from propagation of microcracks and increase the ductility of concrete; the elastic modulus of concrete decreased with the increase of steel fibers, and increased with the increase of PVA fibers; the hybrid fibers could effectively improve the ultimate bearing capacity of GFRP-reinforced concrete stubs, and it was the best proportion that the PVA fiber content was 0.1% and the steel fiber content was 0.8%.
- GFRP bar,
- hybrid fiber,
- concrete stub,
- axial compression,
- failure mode,
- bearing capacity

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References(19)

References

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