RESEARCH ARTICLE


Experimental Research on the Flexural Capacity of Reinforced Concrete Beams Reinforced with BFRP



Cheng Haigen*, 1, Tian Qin2, Shang Jingmiao1, Lu Dinkun1
1 School of Civil Engineering, East China Jiaotong University, Nanchang Jiangxi, 330013, P.R. China
2 School of Civil Engineering, Nanchang University, Nanchang Jiangxi, 330013, P.R. China


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Creative Commons License
© 2015 Haigen et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Civil Engineering, East China Jiaotong University, Nanchang, Jiangxi, 330013, P.R. China; Tel:!13879104029; E-mail: bridge407@126.com


Abstract

In order to study the ultimate flexural capacity of reinforced concrete beams with BFRP (Basalt fiber reinforced polymer), the test is designed and poured four T-section reinforced concrete beams. At first, monotonous static loading is carried on two of the beams until the chinks appeared. Afterward, all beams are strengthened by BFRP sheets. The contrast experiment studied and analyzed the different cracking load, ultimate load, deflection, reinforcement strain, concrete strain, fiber cloth strain, crack development of pre-reinforced beams and damaged beams strengthened by BFRP sheets. At the same time, the theoretical analysis and finite element simulation are performed to verify the result of experiment. The results show that the ultimate flexural capacity of reinforced concrete beams with BFRP has significantly increased. The circular bead treatment raises woke effect and reduces stress concentration of BFRP sheets.

Keywords: Basalt fiber reinforced polymer, pre-reinforcement, T-section reinforced concrete beam, ultimate flexural capacity.