[1] Huang Lihua, Li Yujing, Wang Yuefang,. Strengthening effects of BFRP on reinforced concrete beams [J]. Journal of Southeast University (English Edition), 2013, 29 (2): 182-186. [doi:10.3969/j.issn.1003-7985.2013.02.013]

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Strengthening effects of BFRP on reinforced concrete beams()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

29

Issue:

2013 2

Page:

182-186

Research Field:

Civil Engineering

Publishing date:

2013-06-20

Info

Title:

Strengthening effects of BFRP on reinforced concrete beams

Author(s):

Huang Lihua;  Li Yujing;  Wang Yuefang

School of Civil Engineering, Dalian University of Technology, Dalian 116023, China

Keywords:

basalt fiber reinforced polymer(BFRP);  strengthening;  reinforced concrete beam;  experiment;  strengthening guidelines

PACS:

TU375

DOI:

10.3969/j.issn.1003-7985.2013.02.013

Abstract:

Reinforced concrete(RC)beams externally bonded with basalt fiber reinforced polymer(BFRP)are experimentally investigated by using different numbers of bonding plies, transverse anchorages as well as the initial conditions of strengthened beams. The performances of the BFRP strengthening are compared with those of the carbon fiber reinforced polymer(CFRP)and the glass fiber reinforced polymer(GFRP)under the same experimental condition. Experimental results indicate that the strength and ductility of the strengthened beam with two plies of the BFRP are improved remarkably than those with one ply. The strengthening effects of the BFRP lie between those of the CFRP and the GFRP. The BFRP strengthening is little influenced by pre-cracks of concrete. Most failures are caused by interfacial debonding induced by flexural cracks in the experiment. Clamping of U-wraps along the whole beam is less efficient than endpoint anchorage for increasing the ultimate load of the strengthened beam. Finally, the models suggested by the five guidelines for predicting the debonding strain of the CFRP are extended to the BFRP and the conservative estimates of the debonding strain of the BFRP are given as well.

References:

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Memo

Memo:

Biography: Huang Lihua(1967—), female, associate professor, lhhang@dlut.edu.cn.
Citation: Huang Lihua, Li Yujing, Wang Yuefang.Strengthening effects of BFRP on reinforced concrete beams[J].Journal of Southeast University(English Edition), 2013, 29(2):182-186.[doi:10.3969/j.issn.1003-7985.2013.02.013]

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