Modeling, Analysis, and Design of Reinforced Concrete Structures Retrofitted with FRP

Introduction

This project presents a study on the shear retrofit of reinforced concrete (RC) beams with externally bonded fiber reinforced polymers (FRP). A new model is proposed to predict the FRP shear strength contribution for different modes of failure, i.e., bending, shear with FRP rupture, shear with FRP debonding, and mixed shear-flexure, and various retrofit techniques, i.e., side-bonding, U-jacketing, and full wrapping. Developments have also been made to evaluate the effects of preparation parameters, namely, temperature, agitation rate, and pH on the shell thickness and size (diameter) of the microcapsules as well as to evaluate the self-healing mechanism in concrete through experimental testing performed in laboratory, and to improve the self-healing properties by using composite actions with fiber reinforced polymers.

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Related Publications

  • Monti G and Barbato M (2003). “Fiber-section FE of FRP-strengthened RC beam in flexure, shear and confinement.” Proceedings (full paper), 6th International Symposium on Fibre- Reinforced Polymer (FRP) Reinforcement for Concrete Structures, July 8-10, 2003, National University of Singapore, Singapore (Singapore). (Link)
  • Barbato M, Monti G and Santinelli F (2003). “Fiber-section FE of FRP-strengthened RC beam for seismic analysis.” Proceedings (full paper), fib-Symposium Concrete Structures in Seismic Regions, May 6-9, 2003, Athens (Greece). (Link)
  • Barbato M (2008). “Accurate and efficient finite element modeling of FRP-strengthened reinforced concrete beams.” Proceedings (abstract), Inaugural International Conference of the Engineering Mechanics Institute (EM08), May 18-21, 2008, Minneapolis, MN (USA).
  • Barbato M (2009). “Efficient finite element modelling of reinforced concrete beas retrofitted with fibre reinforced polymers.” Computers and Structures, 87(3-4):167-176. (Link)
  • Barbato M (2010). “An accurate and efficient finite element for reinforced concrete beams flexurally retrofitted with FRP.” Proceedings (full paper), Earth & Space 2010 Conference, March 14-17, 2010, Honolulu, HI (USA). (Link)
  • Hu DC (2012). "Efficient finite element modeling of reinforced concrete columns confined with fiber reinforced polymers." MSc Thesis, Louisiana State University, December 2012. (PDF)
  • SA Bellamkonda (2013). "Modeling of shear strengthening of reinforced concrete beams retrofitted with externally bonded fiber reinforced polymers." MSc Thesis, Louisiana State University, May 2013. (PDF)
  • Barbato M and Hassan MM (2013). “Improving the Self-Healing Properties of Concrete Materials by Using Composite Actions with Fiber Reinforced Polymers.” Rep. No. 11-12, Gulf Coast Research Center for Evacuation and Transportation Resiliency, Baton Rouge, LA (USA). (Link)
  • Gilford III J, Hassan MM, Rupnow T and Barbato M (2013). “Evaluation of microencapsulation of dicyclopentadiene (DCDP) and sodium silicate for self-healing concrete.” Proceedings (full paper), Paper # 13-1172, 92nd Transportation Research Board Annual meeting, January 13-17, 2013, Washington, DC (USA).
  • Gilford III J, Hassan MH, Rupnow T, Barbato M, Okeil A and Asadi S. (2014). “Dicyclopentadiene and sodium silicate microencapsulation for self-healing of concrete.” Journal of Materials in Civil Engineering (ASCE), 26(5):886–896. (Link)
  • Hu DC and Barbato M (2014). “Simple and efficient finite element modeling of reinforced concrete columns confined with fiber reinforced polymer laminates.” Engineering Structures, 72:113-122. (Link)
  • Vieira DZ, Barbato M and Hu D (2018). “Constitutive model of concrete simultaneously confined by FRP and steel for finite element analysis of FRP-confined reinforced concrete columns.” Journal of Composites for Construction (ASCE), 22(6):04018064. (Link)
  • Vieira DZ and Barbato M (2019). “Parametric study on the effect of steel confinement in short bridge piers retrofitted with externally-wrapped FRP.” Proceedings (full paper), 2019 Tran-SET Conference, April 11-12, 2019, San Antonio, TX (USA). MATEC Web of Conferences, 271:01012. (Link)

 

Funded Projects Supporting this Research

  • Probabilistic Demand Analysis of Dynamically-Excited Uncertain Structural Systems

PI: Barbato, M.

Co-PI: None

Sponsor: Louisiana Board of Regents, through NSF EPSCoR

Program: Pilot Funding for New Research (Pfund)

Period: May 2008 - July 2009

  • A probabilistic performance-based approach for building separation distance decision to mitigate seismic pounding risk

PI: Barbato, M.

Co-PI: None

Sponsor: LSU Council on Research

Program: 2009-2010 Faculty Research Grant Program

Period: August 2010 - July 2011

  • Development of finite elements for response and response sensitivity analysis of reinforced concrete structures retrofitted with externally-bonded fiber reinforced polymers

PI: Barbato, M.

Co-PI: None

Sponsor: Louisiana Board of Regents

Program: RCS Program

Period: August 2010 - July 2013

  • Improving the self-healing properties of concrete materials by using composite action with fiber reinforced polymers and shape memory alloys

PI: Barbato, M. (50%)

Co-PI: Hassan, M. (50%, CM)

Sponsor: Gulf Coast Center for Evacuation and Transportation Resiliency

Program: University Transportation Center Grant

Period: August 2011 - July 2012

  • A novel hurricane-resistant housing construction system

PI: Barbato, M.

Co-PI: None

Sponsor: Louisiana Board of Regents, NSF EPSCoR, through LSU Graduate School

Program: Economic Development Assistantships (EDAs) 2013-2014

Period: August 2014 - July 2018