DOI QR코드

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Low velocity impact behavior of concrete beam strengthened with CFRP strip

  • 투고 : 2010.10.14
  • 심사 : 2011.12.01
  • 발행 : 2012.03.25

초록

Nowadays CFRP (Carbon Fiber Reinforced Polymer) became widely used materials for the strengthening and retrofitting of structures. Many experimental and analytical studies are encountered at literature about strengthening beams by using this kind of materials against static loads and cyclic loads such as earthquake or wind loading for investigating their behavior. But authors did not found any study about strengthening of RC beams by using CFRP against low velocity impact and investigating their behavior. For these reasons an experimental study is conducted on totally ten strengthened RC beams. Impact loading is applied on to specimens by using an impact loading system that is designed by authors. Investigated parameters were concrete compression strength and drop height. Two different sets of specimens with different concrete compression strength tested under the impact loading that are applied by dropping constant weight hammer from five different heights. The acceleration arises from the impact loading is measured against time. The change of velocity, displacement and energy are calculated for all specimens. The failure modes of the specimens with normal and high concrete compression strength are observed under the loading of constant weight impact hammer that are dropped from different heights. Impact behaviors of beams are positively affected from the strengthening with CFRP. Measured accelerations, the number of drops up to failure and dissipated energy are increased. Finite element analysis that are made by using ABAQUS software is used for the simulation of experiments, and model gave compatible results with experiments.

키워드

참고문헌

  1. ABAQUS/Explicit User Manual, Version 6.7.
  2. Anil, O. and Belgin, C. (2008), "Review of bond-strength models and application on CFRP to-concrete bonded joints across crack", Science. Eng. Comp. Mater., 15(2), 141-158.
  3. Anil, O. and Belgin, C. (2010), "Anchorages effects on CFRP-to-concrete bond-strength", J. Reinforced. Plastics. Comp., 29(4), 539-557. https://doi.org/10.1177/0731684408100259
  4. Anil, O., Belgin, C. and Kara, M.E. (2010), "Experimental investigation on CFRP to concrete bonded joints across crack", Techno Press, Struct. Eng. Mech., 35(1), 1-18. https://doi.org/10.12989/sem.2010.35.1.001
  5. Arslan, A. (1995), "Mixed-Mode fracture performance of fibre reinforced concrete under impact loading", Mate. Struc., 28, 473-478. https://doi.org/10.1007/BF02473167
  6. Baran, A. and Anyl, O. (2010), "Nonlinear finite element analysis of effective CFRP bonding length and strain distribution along concrete-CFRP interface", Techno Press, Comp. Concrete. Inter. J., 7(5), 427-453.
  7. Badr, A., Ashour, A.F. and Platten, A.K. (2006), "Statistical variations in impact resistance of polypropylene fiber-reinforced concrete", Inter. J. Impact. Eng., 32(11), 1907-1920. https://doi.org/10.1016/j.ijimpeng.2005.05.003
  8. Banthia, N.P. (1987), "Impact resistance of concrete", PhD Thesis, The University of British Columbia.
  9. Barr, B. and Baghli, A. (1988), "A repeated drop-weight impact testing apparatus for concrete", Magazine. Con. Rese., 40(144),167-176. https://doi.org/10.1680/macr.1988.40.144.167
  10. Bull, P.H. and Edgren, F. (2004), "Compressive strength after impact of CFRP-foam core sandwich panels in marine applications", Comp. Part B, 35(6-8), 535-541. https://doi.org/10.1016/j.compositesb.2003.11.007
  11. Erki, M.A. and Meier, U. (1999), "Impact loading of concrete beams externally strengthened with CFRP laminates", J. Comp. Const., 3(3), 117-124. https://doi.org/10.1061/(ASCE)1090-0268(1999)3:3(117)
  12. Goldsmith, W. (1960), "Impact: The theory and physical behavior of colliding solids", London Edward Arnold Limited, 145-240.
  13. Kantar, E. (2009), "Experimental investigation of impact behavior of reinforced concrete beam strengthened with CFRP", Gazi University, Civil Engineering Department, Ph. D. Thesis, 241 page, (In Turkish).
  14. Kantar, E., Arslan, A. and Anyl, O. (2011a), "Effect of concrete compression strength variation on impact behavior of concrete", J. Faculty of Eng. Architecture of Gazi University, 26(1), 115-123.
  15. Kantar, E., Erdem, T. and Anyl, O. (2011b), "Nonlinear finite element analysis of impact behavior of concrete beam", Mathematical. Comp. Appli., 16(1), 183-193.
  16. Kishi, N., Konno, H., Ikeda, K. and Matsuoka, K.G. (2002), "Prototype impact tests on ultimate impact resistance of PC rock sheds", Int. J. Impact. Eng, 27(9), 969-985. https://doi.org/10.1016/S0734-743X(02)00019-2
  17. Krauthammer, T. (1998), "Blast mitigation technologies: Developments and numerical considerations for behavior assessment and design. structures under shock and impact", V. Computational Mechanics Publications, 1-12.
  18. Marar K., Celik T. and Eren O. (2001), "Relationship between impact energy and compression toughness energy of high-strength fiber reinforced concrete", Mater. Lett., 47(4-5), 297-304. https://doi.org/10.1016/S0167-577X(00)00253-6
  19. Mindess, S. and Cheng, Y. (1993), "Perforation of plain and fiber reinforced concretes subjected to low-velocity impact loading", Cement. Con. Rese., 23(1), 83-92. https://doi.org/10.1016/0008-8846(93)90138-Y
  20. Muszynski, L.C. (1998), "Explosive field test to evaluate composite reinforcement of concrete and masonry walls", Proceedings of the Second International Conference on Composites in Infrastructure ICCI'98., Tucson Arizona, USA, Edited by H. Saadatmanesh, and M. R. Ehsani, 276-284.
  21. Murtiadi, S. (1999) "Behavior of high-strength concrete plates under impact loading", Master Thesis, Faculty of Engineering and Applied Science Mernorial University of Newfoundland.
  22. Nataraja, M.C., Nagaraj, T.S. and Basavaraja, S.B. (2005), "Reproportioning of steel fiber reinforced concrete mixes and their impact resistance", Cement. Con. Rese., 35(12), 2350-2359. https://doi.org/10.1016/j.cemconres.2005.06.011
  23. Nagaraj, T.S., Shashiprakash, S.G. and Raghuprasad, B.K., (1993), "Reproportioning concrete mixes", ACI Mater. J., 90(1), 50-58.
  24. Ong, K.C.G., Basheerkhan, M. and Paramasivam, P. (1999), "Resistance of fiber concrete slabs to low velocity projectile impact", Cem. Con. Comp., 21(5-6), 391-401. https://doi.org/10.1016/S0958-9465(99)00024-4
  25. Selvi, M. (2008), "Effect of concrete strength variation on the impact behavior", Gazi University, Civil Engineering Department, Master of Science Thesis, 103 page (In Turkish).
  26. Siewert, T.A., Manahan, M.P., McCowan, M.P., Holt, J.M., Marsh, F.J. and Ruth, E.A. (1999), "The history and importance of impact testing", ASTM.
  27. Tang, T. (2002), "Behavior of concrete beams retrofitted with composite laminates under impact loading", PhD Thesis, University of Arizona.
  28. Valipour, H.R., Huynh, L. and Foster, S.J., (2009), "Analysis of RC beams subjected to shock loading using a modified fibre element formulation", Comp. Conc., An International J., 6(5).

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