Research

Innovative Strengthening Techniques for Concrete Members

Use of externally bonded Fiber reinforced polymers, (FRP), laminates is commonly used worldwide to enhance the flexural and shear capacities as well as the serviceability limit states of concrete members.  Concrete beams, columns and slabs are tested experimentally and calibrated when strengthened with FRP.  Use of externally prestressed FRP in strengthening applications is also gaining popularity due to its advantages in controlling cracks and deflection induced in the structural elements.  FRP may be also used in strengthening masonry structures to increase its capacity and improve its cracking behavior.  FRP laminates are easy-to-apply and an innovative technique to enhance the overall performance of concrete floors.  This research aims to investigate the behavior of concrete members strengthened with FRP laminates and to introduce design guidelines for this type of application.

Research Team

  1. Amr Ali Abdelrahman
  2. Hussein Okail
  3. Fareed ElGabbas

Related Journal Publication List

  1. “In-plane lateral load behaviour of confined masonry walls retrofitted using carbon-fibre-reinforced polymers” Islam M. Mantawy, Hussein O. Okail and Amr A. Abdelrahman, Int. J. Masonry Research and Innovation, Vol. 2, No. 1, 2017.
  2. “Torsional Strengthening of Reinforced Concrete Beams Using CFRP Sheets”, Mahmoud M. El-Kateb, Amr A. Abdel Rahman, Tarek K. Hassan, Journal of Al-Azhar University Engineering Sector, Al-Azhar University, Volume 35, No. 2, April 2013.
  3. “Different CFRP Strengthening Techniques For Prestressed Hollow Core RC Slabs: Experimental Study And Analytical Investigation”, El-Gabbas, F., El-Ghandour, A., Abdelrahman, A. & El-Dieb, A., Journal Of Composite Structures Journal, Reston, Elsevier Publication, vol.92, issue 2, January 2010, pp 401-411.
  4. “Effect of Elevated Temperature on the Behavior of RC Beams Strengthened with FRP”, S. Okba, A. Abdelrahman, H. Abdellatif, and S. Khafaga, Journal of Housing and Building National Research Centre, Vol. 5, No.2, August 2009, pp.13-24.
  5. “Strengthening Precast-Prestressed Hollow Core Slabs to Resist Negative Moments using Carbon Fiber Reinforced Polymer Strips: An Experimental Investigation and A Critical Review of Canadian Standards Association S806-02”, Hosny A., Sayed-Ahmed E., Abdelrahman A., and Alhlaby A.,  Canadian. Journal of Civil Engineering, Vol. 33, pp 955-967, 2006.
  6. “Performance of Reinforced Concrete Beams Strengthened by Hybrid FRP Laminates”, by A. Hosny, H. Shaheen, A. Abdelrahman, T. El-Afandy, Journal Of Cement and Concrete Composites (CCC) Special Issue "Durability & Ductility of FRP Strengthened Beams, Slabs & Columns", Elsevier Publisher, September 2005.
  7. “Behaviour of Concrete Corbels Strengthened by Carbon FRP Laminates”, by A. Abdelrahman, Port-Said Engineering Research Journal, (PSERJ), Suez Canal University, Vol.9, No.2, 2005.
  8. “Combined Flexure and Shear Strengthening of Concrete T-Beams Using FRP Fabric”, by A. Abdelrahman, Journal of Ain Shams University, Vol.40, No.4, December 2005.
  9. “Use of ACM in Rehabilitation Projects in Egypt”, by A. Abdelrahman, M. Mohamadien, S. Rizkalla, and G. Tadros, Field Applications of FRP Reinforcement: Case Studies, ACI SP-215, 2003, Pages 361-372.
  10.  “Strengthening of RC Flat Slab Using CFRP Strips”, by A. Abdelrahman, Port-Said Engineering Research Journal, (PSERJ), Suez Canal University, June 2000.
  11.  “Deflection Control of Concrete Beams Pretensioned by CFRP Bars”, by A. Abdelrahman, and S. Rizkalla, ASCE Journal of Composites for Construction, Vol. 3, No. 2, May 1999, pp. 55-62.
  12.  “FRP for the 21st Century”, by Amr Abdelrahman, Journal of Arab Roads Association, Vol.47, No.1, January 1999, pp. 33-46.
  13. “The New Generation”, by S. Rizkalla, E. Shehata, A. Abdelrahman and G. Tadros, ACI Concrete International, Vol. 20, No. 6, June 1998, pp. 35-38.
  14. “Serviceability of Concrete Beams Prestressed by Carbon Fibre Reinforced Plastic Bars”, by A. Abdelraham, and S. Rizkalla, ACI Structural Journal, July - August 1997, Vol. 94, No. 4, pp.447-457.
  15. “Test Model for the First Canadian Smart Highway Bridge”, by A. Abdelrahman, S. Rizkalla and G. Tadros, ACI Structural Journal, July/August 1995, Vol. 92, No. 4, pp. 451-458.

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