Advances in concrete construction

  • 제6권5호
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  • Pages.423-463
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  • 2018
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  • 2287-5301(pISSN)
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  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
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Rehabilitation of normal and self-compacted steel fiber reinforced concrete corbels via basalt fiber

  • Gulsan, Mehmet Eren (Civil Engineering Department, Gaziantep University) ;
  • Al Jawahery, Mohammed S. (Duhok Polytechnic University) ;
  • Alshawaf, Adnan H. (Civil Engineering Department, Gaziantep University) ;
  • Hussein, Twana A. (Civil Engineering Department, Gaziantep University) ;
  • Abdulhaleem, Khamees N. (Civil Engineering Department) ;
  • Cevik, Abdulkadir (Civil Engineering Department, Gaziantep University)
  • 투고 : 2018.02.02
  • 심사 : 2018.05.30
  • 발행 : 2018.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper investigates the behavior of normal and self-compacted steel fiber reinforced concrete (SCC-SFRC) corbels rehabilitated by Basalt Fiber Mesh (BFM) and Basalt Fiber Fabric (BFF) for the first time in literature. The research objective is to study the effectiveness of BFM and BFF in the rehabilitation of damaged reinforced concrete corbels with and without epoxy injection. The experimental program includes two types of concrete: normal concrete, and self-compacted concrete. For normal concrete, 12 corbels were rehabilitated by BFM without injection epoxy in cracks, with two values of compressive strength, three ratios of steel fiber (SF), and two values of shear span. For self-compacted concrete, 48 corbels were rehabilitated with different parameters where 12 corbels were rehabilitated by BFM with and without epoxy injection, 18 heated corbels with three different high-temperature level were rehabilitated by repairing cracks only by epoxy injection, and 18 heated corbels with three different high-temperature level were rehabilitated by repairing cracks by epoxy and wrapping by BFF. All 48 corbels have two values of compressive strength, three values volumetric ratios of SF, and two values of the shear span. Test results indicate that RC corbels rehabilitated by BFM only without injection did not show any increase in the ultimate load capacity. Moreover, For RC corbels that were repaired by epoxy without basalt wrapping, the ultimate load capacities showed an increase depending on the mode of failure of corbels before the rehabilitation. However, the rehabilitation with only crack repairing by epoxy injection is more effective on medium strength corbels as compared to high strength ones. Finally, it can be concluded that use of BFF is an effective and powerful technique for the strengthening of damaged RC corbels.

키워드

참고문헌

  1. Abdulhaleem, K.N., Gulsan, M.E. and Cevik, A. (2018), "Mechanical behavior of steel fiber-reinforced selfcompacting concrete corbels at elevated temperatures", Struct. Concrete, 19(2), 1-14. https://doi.org/10.1002/suco.201870015
  2. ACI 224 (2008), Control of Cracking in Concrete Structures, American Concrete Institute, Farmington Hills, MI, USA.
  3. ACI 318 (2011), Building Code Requirements for Structural Concrete ACI 318-11 and Commentary, American Concrete Institute, Farmington Hills, MI, USA.
  4. ACI 440 (2008), Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures, Farmington Hills, MI, USA.
  5. Ahmad, S., Elahi, A., Kundi, S. and Haq, W. (2013), "Investigation of shear behavior of corbel beams strengthened with CFRP", Life Sci. J., 10(12s), 961-965.
  6. Assih, J., Ivanova, I., Dontchev, D. and Li, A. (2015), "Concrete damaged analysis in strengthened corbel by external bonded carbon fibre fabrics", Appl. Adhes. Sci., 3(1), 21. https://doi.org/10.1186/s40563-015-0045-1
  7. Benyahia, A., Ghrici, M., Mansour, M.S. and Omran, A. (2017), "Elaboration and characterization of fiberreinforced self-consolidating repair mortar containing natural perlite powder", Adv. Concrete Constr., 5(1), 1-15. https://doi.org/10.12989/acc.2017.5.1.001
  8. De Castro, J. (2005), "System ductility and redundancy of FRP structures with ductile adhesively-bonded joints", EPFL-CCLab PhD Thesis, DOI: 10.5075/epfl-thesis-3214.
  9. Corry, R.W. and Dolan, C.W. (2001), "Strengthening and repair of a column bracket using a Carbon Fiber Reinforced Polymer (CFRP) Fabric", PCI J., 46(1), 54-63. https://doi.org/10.15554/pcij.01012001.54.63
  10. Elgwady, M.A., Rabie, M. and Mostafa, M.T. (2005), "Strengthening of corbels using CFRP an experimental program", Cairo University, Giza, Egypt.
  11. Erfan, A.M., Abdel-Rahman, G.T., Nassif, M.K. and Hammad, Y.H. (2010), "Behavior of reinforced concrete corbels strengthened with CFRP fabrics", Benha University.
  12. Fattuhi, N.I. (1990), "Strength of SFRC Corbels subjected to vertical load", J. Struct. Eng., 116(3), 701-718. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:3(701)
  13. Foster, S.J. and Malik, A.R. (2002), "Evaluation of efficiency factor models used in strut-and-tie modeling of nonflexural members", J. Struct. Eng., 128(5), 569-577. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:5(569)
  14. Foster, S.J., Powell, R.E. and Selim, H.S. (1996), "Performance of high-strength concrete corbels", Struct. J., 93(5), 555-563.
  15. Haddad, R.H., Al-Mekhlafy, N. and Ashteyat, A.M. (2011), "Repair of heat-damaged reinforced concrete slabs using fibrous composite materials", Constr. Build. Mater., 25(3), 1213-1221. https://doi.org/10.1016/j.conbuildmat.2010.09.033
  16. Haddad, R.H., Shannag, M.J. and Hamad, R.J. (2007), "Repair of heat-damaged reinforced concrete Tbeams using FRC jackets", Mag. Concrete Res., 59(3), 223-231. https://doi.org/10.1680/macr.2007.59.3.223
  17. Haddad, R.H., Shannag, M.J. and Moh'd, A. (2008), "Repair of heat-damaged RC shallow beams using advanced composites", Mater. Struct., 41(2), 287-299. https://doi.org/10.1617/s11527-007-9238-9
  18. He, Z.Q., Liu, Z. and Ma, Z.J. (2012), "Investigation of load-transfer mechanisms in deep beams and corbels", ACI Struct. J., 109(4), 467.
  19. Hwang, S.J. and Lee, H.J. (2002), "Strength prediction for discontinuity regions by softened strut-and-tie model", J. Struct. Eng., 128(12), 1519-1526. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:12(1519)
  20. Hwang, S.J., Lu, W.Y. and Lee, H.J. (2000), "Shear strength prediction for reinforced concrete corbels", Struct. J., 97(4), 543-552.
  21. Ivanova, I. and Assih, J. (2015a), "Experimental study of local behavior of strengthened reinforced concrete short Corbel by bonding carbon fiber fabrics", Int. J. Struct. Civil Eng. Res., 4(1), 148-158.
  22. Ivanova, I. and Assih, J. (2016), "The effect of fatigue test on short reinforced-concrete corbel strengthened by externally bonded composite fibre fabrics", Eng. Fract. Mech., 167, 167-175. https://doi.org/10.1016/j.engfracmech.2016.04.035
  23. Ivanova, I., Assih, J. and Dontchev, D. (2016), "Mechanical pathologies of reinforced and damaged concrete Corbels by gluing composite carbon fabrics under static and dynamic tests", Sustainable Construction, Springer.
  24. Ivanova, I., Assih, J., Li, A., Dontchev, D. and Delmas, Y. (2015), "Experimental investigation into strengthened short reinforced concrete corbels by bonding carbon fiber fabrics", J. Adhes. Sci. Technol., 29(20), 2176-2189. https://doi.org/10.1080/01694243.2015.1060060
  25. Ivanova, I. and Assih, J. (2015b), "Static and dynamic experimental study of strengthened inforced short concrete corbel by using carbon fabrics, crack path in shear zone", Frattura ed Integrita Strutturale, 9(34), DOI: https://doi.org/10.3221/IGF-ESIS.34.09.
  26. Ivanova, I., Assih, J., Li, A. and Delmas, Y. (2014), "Influence of fabrics layers on strengthened reinforced concrete short corbels", Int. J. Civil Eng. Technol., 5, 33-43.
  27. Kumar, R.A., Selvamony, C., Seeni, A. and Sethuraman, T.R. (2015), "Retrofitting of RCC piles by using Basalt Fiber Reinforced Polymer (BFRP) composite, Part: 1 review papers on RCC structures and piles retrofitting works", Int. J. Technol. Enhanc. Emerg. Eng. Res., 4(1), 103-115.
  28. Leonardi, A., Meda, A. and Rinaldi, Z. (2011), "Fire-damaged R/C members repair with high-performance fibre-reinforced jacket", Strain, 47(s2), 28-35. https://doi.org/10.1111/j.1475-1305.2010.00731.x
  29. Roy, A., Sharma, U. and Bhargava, P. (2014), "Strengthening of heat damaged reinforced concrete short columns", J. Struct. Fire Eng., 5(4), 381-398. https://doi.org/10.1260/2040-2317.5.4.381
  30. Roy, A.B.D., Sharma, U.K. and Bhargava, P. (2015), "Confinement strengthening of heat-damaged reinforced concrete columns", Mag. Concrete Res., 68(6), 291-304.
  31. Russo, G., Venir, R., Pauletta, M. and Somma, G. (2006), "Reinforced concrete corbels-shear strength model and design formula", ACI Struct. J., 103(1), 3.
  32. Shadhan, K.K. and Kadhim, M.M.M. (2015), "Use of CFRP laminates for strengthening of reinforced concrete corbels", Int. J. Civil Eng. Technol., 6(11), 11-20.
  33. Sika Company (2014), "Product sheet of Sikadur-52 injection type N", https://www.sika.com.
  34. Tekno Construction Chemicals (2016), "Product sheets of tekno bond 200 and 300", https://www.teknoyapi.com.tr.
  35. Toumi, B., Resheidat, M., Guemmadi, Z. and Chabil, H. (2009), "Coupled effect of high temperature and heating time on the residual strength of normal and high-strength concretes", Jordan J. Civil Eng., 3(4), 322-330.
  36. Yaqub, M. and Bailey, C.G. (2011a), "Cross sectional shape effects on the performance of post-heated reinforced concrete columns wrapped with FRP composites", Compos. Struct., 93(3), 1103-1117. https://doi.org/10.1016/j.compstruct.2010.09.012
  37. Yaqub, M. and Bailey, C.G. (2011b), "Repair of fire damaged circular reinforced concrete columns with FRP composites", Constr. Build. Mater., 25(1), 359-370. https://doi.org/10.1016/j.conbuildmat.2010.06.017
  38. Yaqub, M., Bailey, C.G. and Nedwell, P. (2011), "Axial capacity of post-heated square columns wrapped with FRP composites", Cement Concrete Compos., 33(6), 694-701. https://doi.org/10.1016/j.cemconcomp.2011.03.011
  39. Yaqub, M., Bailey, C.G., Nedwell, P., Khan, Q.U.Z. and Javed, I. (2013), "Strength and stiffness of postheated columns repaired with ferrocement and fibre reinforced polymer jackets", Compos. Part B: Eng., 44(1), 200-211. https://doi.org/10.1016/j.compositesb.2012.05.041
  40. Yassin, L.A.G. and Hasan, Q.A.M. (2016), "Reinforced concrete corbels-state of the art", J. Mater. Eng. Struct., 2(4), 180-205.
  41. Yong, Y.K. and Balaguru, P. (1994), "Behavior of reinforced high-strength-concrete corbels", J. Struct. Eng., 120(4), 1182-1201. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:4(1182)

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  2. Effects of fiber types and volume fraction on strength of lightweight concrete containing expanded clay vol.12, pp.1, 2018, https://doi.org/10.12989/acc.2021.12.1.047