Strengthening Prestressed Concrete Bridge Girders and Building Beams with Carbon Fiber Reinforced Polymer Sheets

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  •   Herish A. Hussein

  •   Zia Razzaq

Abstract

The effect of Carbon Fiber Reinforced Polymer (CFRP) retrofitting and concrete type on the flexural strength of prestressed concrete I-section girders used in bridges and beams in buildings is investigated. Non-linear moment-curvature relationships are predicted using an iterative algorithm for both non-retrofitted and CFRP-retrofitted prestressed concrete girder and beam cross-sections with various concrete types. Two different CFRP-retrofitting schemes are analyzed for comparing their effectiveness. It is found that although non-retrofitted beam section exhibits greater ductility, the use of CFRP retrofitting in both tension and compression regions simultaneously results in a significant increase in flexural strength. It is also found that the higher the ultimate concrete strength, the higher is the influence of CFRP-retrofitting on increasing flexural strength.


Keywords: Flexural Strength, CFRP, Retrofitting

References

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H. A. Hussein and Z. Razzaq, "CFRP Retrofitting Schemes for Prestressed Concrete Box Beamsfor Highway Bridges," Global Journal of Research In Engineering, 2017.

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O. Chaallal, M.-J. Nollet, and D. Perraton, "Strengthening of reinforced concrete beams with externally bonded fiber-reinforced-plastic plates: design guidelines for shear and flexure," Canadian Journal of Civil Engineering, vol. 25, no. 4, pp. 692-704, 1998.

K. Ryngier and Ł. Zdanowicz, "Prestressing concrete structures with CFRP composite tendons," Engineering Transactions, vol. 63, no. 4, pp. 407-420, 2015.

H. Yapa and J. Lees, "Rectangular Reinforced Concrete Beams Strengthened with CFRP Straps," Journal of Composites for Construction, 2013.

H. A. Hussein, "Effective CFRP Retrofitting Schemes for Prestressed Concrete Beams," Old Dominion University, 2014.

T. Y. Lin and N. H. Burns, "Design of prestressed concrete structures," 1981.

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How to Cite
[1]
Hussein, H.A. and Razzaq, Z. 2021. Strengthening Prestressed Concrete Bridge Girders and Building Beams with Carbon Fiber Reinforced Polymer Sheets. European Journal of Engineering and Technology Research. 6, 1 (Jan. 2021), 55-57. DOI:https://doi.org/10.24018/ejers.2021.6.1.2323.