International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
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Effective Bond Length of FRP Sheets Externally Bonded to Concrete

  • Ben Ouezdou, Mongi (Civil Engineering Laboratory, National Engineering School of Tunis,Dept. of Civil and Environmental Engineering Department,College of Engineering and Architecture, University of Nizwa) ;
  • Belarbi, Abdeldjelil (Dept. of Civil, Architectural, and Environmental Engineering, Missouri University of Science and Technology) ;
  • Bae, Sang-Wook (Dept. of Civil, Architectural, and Environmental Engineering, Missouri University of Science and Technology)
  • Published : 2009.12.30
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Abstract

Strengthening and repair of concrete structures using externally bonded fiber reinforced polymer (FRP) composite sheets has been popular around the world during the last two decades. However, premature failure due to debonding of the FRP is one of the important issues still to be resolved. Numerous research studies have dealt with the debonding problem in terms of Effective Bond Length (EBL), however, determination of this length has not yet been completely assessed. This paper summarizes previous works on the EBL and proposes a new relationship of the EBL with the FRP stiffness based on the existing experimental data collected in this study.

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References

  1. ACI Committee 440, “Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures,” American Concrete Institute, ACI 440.2R-02, Farmington Hills, MI, USA, 2002
  2. ISIS Canada, “Strengthening Reinforced Concrete Structures with Externally-Bonded Fibre Reinforced Polymers (FRPs)”, ISIS Design Manual No. 4, Intelligent Sensing for Innovative Structures, Winnipeg, Canada, 2001
  3. Canadian Standards Association, “Design and Construction of Building Components with Fiber-Reinforced Polymers,” CSA S806-02, Rexdale, Ontario, Canada, 2002
  4. FIB Task Group 9.3, “Externally Bonded FRP Reinforcement for RC Structures,” Technical Report, Fib Bulletin 14, CEB-FIP, Lausanne, Switzerland, 2001
  5. The Concrete Society, “Design Guidance for Strengthening Concrete Structures Using Fibre Composites Materials,” Concrete Society, CS-TR-55-UK, Technical Report No. 55, 2nd ed., Report of a Concrete Society Committee, Berkshire, UK, 2004
  6. Italian Society Research Society, “Instructions for the Design, Execution and Control of Strengthening Measures through Fibre-reinforced Composites,” CNR-DT 200/04, Rome, Italy, 2004
  7. Eurocode 8-3, “Design of Structures for Earthquake Resis-tance; Part 3: Assessment and Retrofitting of Buildings,” European Standard, EN 1998-3, Brussels, Belgium, 2004
  8. CIDAR, “Design Guideline for RC Structures Retrofitted with FRP and Metal Plates: Beams and Slabs,” Draft 3, Submitted to Standards Australia, CIDAR/CBIR, Australia, 2006
  9. Maeda, T., Asano Y., Sato T., Ueda T., and Kakuta Y., “A Study on Bond Mechanism of Carbon Sheet,” Proceedings of the Third International Symposium (FRPRCS-3), Non-metallic (FRP) Reinforcement for Concrete Structures, Sapporo, Japan, Vol. 1, 1997, pp. 279-286
  10. Neubauer, U., Rostasy, F.S., “Design Aspects of Concrete Structures Strengthened with Externally Bonded CFRP-plates,” Proceeding of the Seventh International Conference on Structural Faults and Repair, ECS Pub., Edinburgh, Scotland , Vol. 2, 1997, pp. 109-118
  11. Chen, J.F., Teng, J.G., “Anchorage Strength Models for FRP and Steel Plates Bonded to Concrete,” ASCE Journal of Structural Engineering, Vol. 127, No.7, 2001, pp. 784-791 https://doi.org/10.1061/(ASCE)0733-9445(2001)127:7(784)
  12. Ueda, T., Dai, J.G., “Interface Bond between FRP Sheets and Concrete Substrates: Properties, Numerical Modeling, and Roles in Member Behaviour,” Progress in Structural Engineering and Materials, Vol. 7, No. 1, 2005, pp. 27-43 https://doi.org/10.1002/pse.187
  13. Ueda, T., Dai, J.G., “New Shear Bond Model for FRPconcrete Interface - from Modeling to Application,” Proceedings of the Second International Conference on FRP Composites in Civil Engineering, CICE 2004, Adelaide, Australia, 2004, pp. 69-81
  14. Sato, Y., Kimura, K., Kobatake, Y., “Bond Behavior between CFRP Sheet and Concrete (Part 1) ,” Journal of Structure and Construction Engineering of AIJ, Japan; Vol. 500, 1997, pp. 75-82. (in Japanese)
  15. Bizandavyi, L., Naele, K.W., “Transfer Lengths and Bond Strengths for Composites Bonded to Concrete,” ASCE Journal of Composites and Construction, Vol. 3, No. 4, 1999, pp. 153-160 https://doi.org/10.1061/(ASCE)1090-0268(1999)3:4(153)
  16. De Lorenzis, L., Miller, B., Nanni, A., “Bond of Fiber-reinforced Polymer Laminates to Concrete,” ACI Material Journal, Vol. 98, No. 3, 2001, pp. 256-264
  17. Nakaba, L., Kanakubo, T., Furuta, T., Yoshizawa, H., “Bond Behavior between Fiber-Reinforced Polymer Laminates and Concrete,” ACI Structural Journal, Vol. 98, No. 3, 2001, pp. 359-367
  18. Foster, S. J. and Khomwan, N., “Determination of Bond Stress Versus Slip for Externally Bonded FRP from Standardized Bond Strength Tests,” Proceeding of the International Symposium on Bond behavior of FRP in Structures, Hong Kong, 2005, pp. 85-90
  19. Boschetto, G., Pellegrino, C., Tinazzi, D., and Modena, C., “Bond Behaviour between FRP Sheets and Concrete: an Experimental Study” Proceeding of the Second International Congress, FIB, Naples, Italy 2006, CD-Rom.
  20. Iwashita, K., Wu, Z., Ishikiwa, T., Hamagushi, Y., and Suzuki, T., “Bonding and Debonding Behavior of FRP Sheets under Fatigue Loading,” Advances in Composites Materials, Vol. 16, No. 1, 2007, pp. 31-44 https://doi.org/10.1163/156855107779755291
  21. Yang, D. S., Hong, S. N., and Park, S. K., “Experimental Observation on Bond-Slip Behavior between Concrete and CFRP Plate,” International Journal of Concrete Structures and Materials, Vol. 1, No. 1, 2007, pp. 37-43 https://doi.org/10.4334/IJCSM.2007.1.1.037
  22. ACI 318-05, Building Code Requirements for Structural Concrete (318-05) Band Commentary (318R-05), American Concrete Institute (ACI), Farmington Hills, MI, USA; 2005

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