A Design Proposal for Concrete Cover Separation in Beams Strengthened by Various Externally Bonded Tension Reinforcements
Source abstract
Abstract
Previous research has shown that the application of externally bonded reinforcements (steel plates, fiber-reinforced polymer (FRP) laminates, overlays, etc.) to strengthen reinforced concrete (RC) beams can lead to brittle debonding failures before the ultimate load is reached. The aim of this study is to develop an analytical approach for the flexural strengthening of existing structures using various types of external reinforcements and predicting the debonding failure. In this study, an analytical model is developed to predict concrete cover separation failure in beams with overlay strengthening that is also applicable to strengthening using other reinforcements, such as steel plates and FRP laminates. An experimental database with various types of beam specimens is used to verify the model's validity and reliability. A concept for determining the effective strengthening capacity in a strengthening design is presented and the main parameters affecting the strengthening capacity are investigated. Finally, a design proposal is presented for the flexural strengthening of RC beams with respect to concrete cover separation failure. This proposal contributes to the application of external flexural strengthening in practical design.
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Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Concrete Corrosion and Durability · Structural Response to Dynamic Loads
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering, College of Civil Engineering and Architecture, Zhejiang University, China.
Lab of Engineering for Maintenance System, Hokkaido University, Japan.
References (38)
Show source-provided references
1. Ahmed, O. and Van Gemert, D., (1999a). “Effect of longitudinal carbon fiber reinforced plastic laminates on shear capacity of reinforced concrete beams.” Proceedings of the fourth international symposium on fiber reinforced polymer reinforcement for reinforced concrete structures. 933-943.
2. Ahmed, O. and Van Gemert, D., (1999b). “Behaviour of RC beams strengthened in bending by CFRP laminates.” Proceedings of the eighth international conference on advanced composites for concrete repair.
3. American Concrete Institute, (ACI 2002.). “Building code requirements for structural concrete.” ACI 318-02 and Commentary (ACI 318R-02), Farmington Hills, Mich..
4. An, X., Maekawa, K. and Okamura, H., (1997). “Numerical simulation of size effect in shear strength of RC beams.” Journal of Materials, Concrete Structures and Pavements, 35, 297-316.
5. Arduini, M., Tommaso, A. D. and Nanni, A., (1997). “Brittle failure in FRP plate and sheet bonded beams.” ACI Structural Journal. 94(4), 363-70.
6. Fanning, P. J. and Kelly. O., (2001). “Ultimate response of RC beams strengthened with CFRP plates.” Journal of Composites for Construction. 5(2), 122-127.10.1061/(ASCE)1090-0268(2001)5:2(122) ↗
7. Beber, A. J., Filho, A. C. and Campagnolo, J. L., (1999). “Flexural strengthening of R/C beams with CFRP sheets.” Proceedings of the eighth international conference on advanced composites for concrete repair.
8. Ceroni, F. and Pecce, M., (2009). “Design provisions for crack spacing and width in RC elements externally bonded with FRP.” Composites Part B: Engineering, 40(1), 17-28.10.1016/j.compositesb.2008.07.004 ↗
9. Gao, B., Kim, J. K. and Leung, C. K. Y., (2004a). “Experimental study on RC beams with FRP strips bonded with rubber modified resins.” Composite Science and Technology, 64, 2557-2564.10.1016/j.compscitech.2004.05.016 ↗
10. Gao, B., Kim, J. K. and Leung, C. K. Y., (2004b). “Taper ended FRP strips bonded to RC beams: Experiments and FEM analysis.” The 2nd international conference on FRP composites in civil engineering, 399- 405.10.1201/9780203970850.ch43 ↗
11. Garden, H. N. and Hollaway, L. C., (1998). “An experimental study of the influence of plate end anchorage of carbon fibre composite plates used to strengthen reinforced concrete beams.” Composite Structures. 42, 175-188.10.1016/S0263-8223(98)00070-1 ↗
12. Garden, H. N., Hollaway, L. C., Thorne, A. M., (1997). “A preliminary evaluation of carbon fibre reinforced polymer plates for strengthening reinforced concrete members.” Proceedings of the Institution of Civil Engineers: Structures and buildings. 123, 127-142.
13. Hussain, M., Sharif, A., Basunbul, I. A., Baluch, M. H. and Al- Sulaimani, G. J., (1995). “Flexural behaviour of precracked reinforced concrete beams strengthened externally by steel plates.” ACI Struct. J., 92(1), 14-22.
14. Jiang, D. S., Shah, P. and Andonian, A., (1984). “Study of the transfer of tensile forces by bond.” ACI Structural Journal, 81(3), 251-259.
15. Jones, R., Swamy, R. N. and Ang, T. H., (1982). “Under- and overreinforced concrete beams with glued steel plates.” Int. J. Cem. Compos. Lightw. Concr., 4(1), 19-32.10.1016/0262-5075(82)90004-5 ↗
16. Jones, R., Swamy, R. N. and Charif, A., (1988). “Plate separation and anchorage of reinforced concrete beams strengthened by epoxy-bonded steel plates.” Struct. Eng., 66(5), 85-94.
17. JSCE, (2007). “Standard Specification for Concrete Structures - 2007: Design.” Japan Society of Civil Engineers Tokyo: Japan.
18. Kankam, C., (1997). “Relationship of bond stress, steel stress, and slip in reinforced concrete.&rdquo10.1061/(ASCE)0733-9445(1997)123:1(79) ↗
19. Journal of Structural Engineering, ASCE, 123(1), 79-85, 1997.10.1061/(ASCE)0733-9445(1997)123:1(79) ↗
20. Maalej, M. and Bian, Y., (2001). “Interfacial shear stress concentration in FRP strengthened beams.” Composite Structures, 54, 417-426.10.1016/S0263-8223(01)00078-2 ↗
21. Macdonald, M. D. and Calder, A. J. J., (1982). “Bonded steel plating for strengthening concrete structures.” International Journal of Adhesion and Adhesive, 2(2),119-127.10.1016/0143-7496(82)90125-7 ↗
22. Nguyen, D. M., Chan, T. K., Cheong. H. K., (2001). “Brittle failure and bond development length of CFRP Concrete Beams.” Journal of Composites for Construction, 5(1), 12-17.10.1061/(ASCE)1090-0268(2001)5:1(12) ↗
23. Oehlers, D. J., (1992). “Reinforced concrete beams with plates glued to their soffits.” J. Struct. Eng., 118(8), 2023-2038.10.1061/(ASCE)0733-9445(1992)118:8(2023) ↗
24. Oller, I. E., Cobo del A. D. and Mari, B. A. R., (2009). “Peeling failure in beams strengthened by plate bond. A design proposal.&rdquo
25. Journal of Structural concrete, fib , 2009,10, No2, 63-71.
26. Quantrill, R. J., Hollaway, L. C. and Thorne, A. M., (1996a). “Experimental and analytical investigation of FRP strengthened beam response: Part I.”Magazine of Concrete Research. 48(177), 331-342.10.1680/macr.1996.48.177.331 ↗
27. Quantrill, R. J., Hollaway, L. C. and Thorne, A. M., (1996b). “Predictions of the maximum plate end stresses of FRP strengthened beams: Part II.” Magazine of Concrete Research. 48(177), 343-351.10.1680/macr.1996.48.177.343 ↗
28. Rahimi, H. and Hutchinson, A., (2001). “Concrete beams strengthened with externally bonded FRP plates.” Journal of Composites for Construction, 5(1), 44-56.10.1061/(ASCE)1090-0268(2001)5:1(44) ↗
29. Raoof, M. and Hassanen, M. A. H., (2000). “Peeling failure of reinforced concrete beams with fibre-reinforced plastic or steel plates glued to their soffits.” Proceedings of the Institution of Civil Engineers: Structures and Buildings, 14, 291-305.
30. Satoh, K. and Kodama, K., (2005) “Central peeling failure behavior of Polymer Cement Mortar Retrofitting of Reinforced Concrete Beams.” J. Mater. in Civil Eng., 17(2), 126-136.
31. Smith, S. T. and Teng, J. G., (2002). “FRP-strengthened RC beam. II: Assessment of debonding strength models.” Engineering Structures, 24, 397-417.
32. Swamy, R. N., Jones, R. and Bloxham, J. W., (1987). “Structural behavior of reinforced concrete beams strengthened by epoxy-bonded steel plate.” Struct. Eng., 65(2), 59-68.
33. Wu, Z. S., Yuan, H., Kojima, Y. and Ahmed, E., (2005). “Experimental and analytical studies on peeling and spalling resistance of unidirectional FRP sheets bonded to concrete.” Composites Science and Technology, 65(7-8), 1088-1097.10.1016/j.compscitech.2004.11.018 ↗
34. Zhang, D. W., Ueda, T. and Furuuchi, H., (2011a). “Intermediate crack debonding of polymer cement mortar overlay-strengthened RC beam.” J. Mater. Civil Eng, ASCE, 23(6):857-865.10.1061/(ASCE)MT.1943-5533.0000240 ↗
35. Zhang, D. W., Ueda, T. and Furuuchi, H., (2011b). “Average crack spacing of overlay-strengthened RC beams.” J. Mater. Civil Eng, ASCE, 23(10), 1460-1472.10.1061/(ASCE)MT.1943-5533.0000316 ↗
36. Zhang, D. W., Furuuchi, H., Hori, A. and Ueda, T., (2009). “Fatigue degradation properties of PCM-concrete interface.” J. Adv. Concr. Technol., 7(3), 425-438.10.3151/jact.7.425 ↗
37. Zhang, D. W., Ueda, T. and Furuuchi, H., (2012). “Concrete cover separation failure of overlay-strengthened reinforced concrete beams.” Construction and Building Materials, 26(1), 735-745.10.1016/j.conbuildmat.2011.06.082 ↗
38. Zhang, S., Raoof, M. and Wood, L. A., (1995). “Prediction of peeling failure of reinforced concrete beams with externally bonded steel plates.” Proceedings of the Institution of Civil Engineers: Structures and Buildings, 110, 257-268.