DOI QR코드

DOI QR Code

Experimental study on strengthening of R.C beam using glass fibre reinforced composite

  • Mini, K.M. (Department of Civil Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham) ;
  • Alapatt, Rini John (Department of Civil Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham) ;
  • David, Anjana Elizabeth (Department of Civil Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham) ;
  • Radhakrishnan, Aswathy (Department of Civil Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham) ;
  • Cyriac, Minu Maria (Department of Civil Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham) ;
  • Ramakrishnan, R. (Department of Civil Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham)
  • 투고 : 2012.11.08
  • 심사 : 2014.03.05
  • 발행 : 2014.05.10

초록

This paper reports the influence of number of layers and length of GFRP sheets wrapped onto RCC beams for strengthening. Twelve beams of size $700mm{\times}150mm{\times}150mm$ were cast and tested. Two beams without GFRP and ten beams wrapped in different lay-up patterns with one and two layers of GFRP sheets was subjected to three point loading test and ultrasonic pulse velocity test. Initial crack load, ultimate failure load and types of failure have been observed and noted. Experimental results indicate a significant increase in initial and ultimate load carrying capacity of GFRP wrapped beams compared to unwrapped beams. The failed control specimen was retrofitted using U wrap scheme and tested under three point loading.

키워드

참고문헌

  1. Alagusundaramoorthy, P., Harik, I.E. and Choo, C.C. (2003), "Flexural behaviour of RC beams strengthened with Carbon Fiber Reinforced Polymer sheets or fabric", J. Compos. Construct., 7(4), 292- 301. https://doi.org/10.1061/(ASCE)1090-0268(2003)7:4(292)
  2. Al-Saidy, A.H., Al-Harthy, A.S., Al-Jabri, K.S., Abdul-Halim, M. and Al-Shidi, N.M. (2010),"Structural performance of corroded RC beams repaired with CFRP sheets", Compos. Struct., 92, 1931-1938. https://doi.org/10.1016/j.compstruct.2010.01.001
  3. Barros, J.A.O., Dias, S.J.E. and Lima, J.L.T. (2007), "Efficacy of CFRP-based techniques for the flexural and shear strengthening of concrete beams", Cement Concrete Compos., 29, 203-217. https://doi.org/10.1016/j.cemconcomp.2006.09.001
  4. Chiew, S.P., Sun, Q. and Yu, Y. (2007), "Flexural strength of RC beams with GFRP laminate", J. Compos. Construct., 11, 497-506. https://doi.org/10.1061/(ASCE)1090-0268(2007)11:5(497)
  5. El-Amoury, T. and Ghobarah, A. (2002), "Seismic rehabilitation of beam-column joint using GFRP sheets", Eng. Struct., 24, 1397-1407. https://doi.org/10.1016/S0141-0296(02)00081-0
  6. Ferrier, E., Arvil, S., Hamelin, P. and Vautrin. (2003), "Mechanical behaviour of RC beams reinforced by externally bonded CFRP sheets", Mater. Struct., 36, 502-529.
  7. Kumutha, R., Vaidyanathan, R. and Palanichamy, M.S. (2007), "Behaviour of reinforced concrete rectangular columns strengthened using GFRP", Cement Concrete Compos., 29(8), 609-615. https://doi.org/10.1016/j.cemconcomp.2007.03.009
  8. Mathai, J., Joanna, P.S. and Jaya, K.P. (2010), "Strengthening of RC columns using Glass Fibre Reinforced Polymer", J. Inst. Eng., 91.
  9. Norris, T., Saadatmanes, H. and Ehsani, M.R. (1997), "Shear and flexural strengthening of RC beams with carbon fibre sheets", J. Struct. Eng., 123(7), 903-911. https://doi.org/10.1061/(ASCE)0733-9445(1997)123:7(903)
  10. Panda, K.C., Bhattacharyya, S.K. and Barai, S.V. (2010), "Influence of transverse steel on the performance of RC-T beams strengthened on shear zone with GFRP", Proceedings of the third Asian Conference on Ecstasy in Concrete, 543-553.
  11. Rai, G. and Indolia, Y. (2011), "Fibre reinforced polymer composites", NBM & CW, 16,148-164.
  12. Sheela, S. and Anugeetha, B. (2010), "Studies on the performance of RC beam column joints strengthened using different composite materials", Proceedings of the third Asian Conference on Ecstasy in Concrete, 343-353.
  13. Subramanian, K. and Kalpana, V.G. (2011), "Experimental study on strengthening of RC beams using textile reinforcements", Civil Eng. Constr. Rev., 24, 98-103.
  14. Sundarraja, M.C. and Rajamohan, S. (2009), "Strengthening of RC beams in shear using GFRP inclined strips - an experimental study", Constr. Build. Mater., 23, 856-864. https://doi.org/10.1016/j.conbuildmat.2008.04.008
  15. Swain, R.B. and Nayak, A.N. (2010), "Strengthening of RC beams using externally bonded fibre reinforced polymer composites", Proceedings of the third Asian Conference on Ecstasy in Concrete, 620-630.
  16. Teng, J.G., Cao, S.Y. and Lam, L. (2001), "Behaviour of GFRP strengthened RC cantilever slabs", Constr. Build. Mater., RILEM, 16(93), 339-349.

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