Flexural behavior of reinforced concrete beams strengthened with bfrp bars

DOI

10.2991/peee-15.2015.47How to use a DOI?

Keywords

BFRP rebar, Flexural, Load-deformation relationship, Debonding.

Abstract

In order to strengthen buildings against various damages and prolong their service life, BFRP is considered serving as reinforcing materials instead of steel. Through static load tests on six simple supporting beams reinforced with BFRP rebar and six reinforced with steel rebar, the paper compares their flexural behavior, finds the load-deformation relationship of the BFRP reinforced concrete beam and finally concludes if the BFRP bar bonds well enough to concrete, it will be great strengthening materials, which is expected to improve the bearing capacity of beam specimens significantly. But in the experiment, the two materials fail to bond as well as assumed, which hinders the BFRP producing advantages as reinforcing materials. The BFRP rebar debonding from concrete restricts its application severely, so the first concern should be how to improve the technology for debonding-resistant BFRP rebar. Under the same loads, the deflections of all beam specimens are large, mainly due to the fact that the elastic modulus of the BFRP rebar is small, while its tensile strength is high, but not fully utilized, so the emphasis in design should be put on the use of pre-stressing tendons. Based on the experimental results, recommendations on relevant design and applications are of great importance to engineering practice and help improve the design guidance for fiber composite concrete structure.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - G.N. Yang
AU  - B.R. Huo
AU  - M.X. Zheng
PY  - 2015/04
DA  - 2015/04
TI  - Flexural behavior of reinforced concrete beams strengthened with bfrp bars
BT  - Proceedings of the 2015 International Conference on Power Electronics and Energy Engineering
PB  - Atlantis Press
SP  - 174
EP  - 176
SN  - 2352-5401
UR  - https://doi.org/10.2991/peee-15.2015.47
DO  - 10.2991/peee-15.2015.47
ID  - Yang2015/04
ER  -