Load-Deflection Behavior and Failure Modes of CFRP Strengthened Reinforced Concrete Beams

Authors

  • Bayan S. Al-Numan Civil Engineering Department, Engineering Faculty, Ishik University, Erbil, Iraq
  • Othman K. Ali Civil Engineering Department, Engineering College, University of Anbar, Iraq

Keywords:

Load-Deflection, CFRP Laminate, Strengthening

Abstract

A total of fourteen beams, 100×150 mm in cross-section were tested in the laboratory over an  effective span of 2000 mm. Two of them were used as reference beams. Twelve strengthened reinforced concrete beams were provided with externally bonded CFRP laminates at the soffit of the beam. The variables considered included number of CFRP layers, yield strength of steel reinforcement (fy) and steel 
reinforcement ratio (). All the beams were tested until failure. The test results showed that the load deflection behavior, failure modes and ultimate load carrying capacity are influenced by the ratio of steel reinforcement, the steel yield strength and the number of CFRP layers. 

References

Aboutaha, R.S., Wattanadechachan, P., & Kim, S. H. (2003). Flexural ductility of CFRP strengthened concrete beams - Experimental investigation. ACI Special Publication SP213-12, 213, 207-220.

Ali, O. K. (2015). Structural strength and ductility of reinforced concrete beams strengthened using Carbon Fiber Reinforced Polymer, MSc. Thesis presented to the Civil Engineering Department University of Anbar.

ACI Committee 318. (2014). Building Code Requirements for Structural Concrete (ACI 318-14), American Concrete Institute, Detroit.

ACI Committee 440. (2008). Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures, (ACI 440.2R-08), American Institute, Farmington Hills, Michigan.

Oudah, F., & El-Hacha, R. (2012). A new ductility model of reinforced concrete beams strengthened using fiber reinforced polymer reinforcement. Composites Journal: Part B, 43, 3338-3347.

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Published

2016-06-01

Issue

Vol. 1 No. 2 (2016)

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons License

Eurasian J. Sci. Eng is distributed under the terms of the Creative Commons Attribution License 4.0 (CC BY-4.0) https://creativecommons.org/licenses/by/4.0/

How to Cite

Al-Numan, B. S., & Ali, O. K. (2016). Load-Deflection Behavior and Failure Modes of CFRP Strengthened Reinforced Concrete Beams. EURASIAN JOURNAL OF SCIENCE AND ENGINEERING, 1(2), 41-52. https://eajse.tiu.edu.iq/index.php/eajse/article/view/211

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