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Studying the effects of CFRP and GFRP sheets on the strengthening of self-compacting RC girders

  • Mazloom, Moosa (Department of Civil Engineering, Shahid Rajaee Teacher Training University) ;
  • Mehrvand, Morteza (Department of Civil Engineering, University of Science and Culture) ;
  • Pourhaji, Pardis (Department of Civil Engineering, Iran University of Science and Technology) ;
  • Savaripour, Azim (Department of Civil Engineering, Islamic Azad University of Sirjan)
  • Received : 2019.02.07
  • Accepted : 2019.02.22
  • Published : 2019.03.25
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Abstract

One method of retrofitting concrete structures is to use fiber reinforced polymers (FRP). In this research, the shear, torsional and flexural strengthening of self-compacting reinforced concrete (RC) girders are fulfilled with glass fiber reinforced polymer (GFRP) and carbon fiber reinforced polymer (CFRP) materials. At first, for verification, the experimental results were compared with numerical modeling results obtained from ABAQUS software version 6.10. Then the reinforcing sheets were attached to concrete girders in one and two layers. Studying numerical results obtained from ABAQUS software showed that the girders stiffness decreased with the propagations of cracks in them, and then the extra stresses were tolerated by adhesive layers and GFRP and CFRP sheets, which resulted in increasing the bearing capacity of the studied girders. In fact, shear, torsion and bending strengths of the girders increased by reinforcing girders with adding GFRP and CFRP sheets. The samples including two layers of CFRP had the maximum efficiencies that were 90, 76 and 60 percent of improvement in shear, torsion and bending strengths, respectively. It is worth noting that the bearing capacity of concrete girders with adding one layer of CFRP was slightly higher than the ones having two layers of GFRP in all circumstances; therefore, despite the lower initial cost of GFRP, using CFRP can be more economical in some conditions.

Keywords

References

  1. ABAQUSE (2010), Abaqus theory manual and user manual and Example Manual Version 6.10. Providence.
  2. ACI Committee 209 (2008), Prediction of Creep, Shrinkage and Temperature Effects in Concrete Structures, Designing for Creep and Shrinkage in Concrete Structures, SP-76, American Concrete Institute, Farmington Hills, USA.
  3. Afzali Naniz, O. and Mazloom, M. (2018), "Effects of colloidal nano-silica on fresh and hardened properties of self-compacting lightweight concrete", J. Build. Eng., 20, 400-410. https://doi.org/10.1016/j.jobe.2018.08.014
  4. Al-Mahmoud, F., Castel, A., Francois, R. and Tourneur, C. (2009), "Strengthening of RC members with near-surface mounted GFRP rods", Compos. Struct., 91(2), 138-147. https://doi.org/10.1016/j.compstruct.2009.04.040
  5. Al-Nasra, M.M. and Asha, N.M. (2013), "Shear reinforcements in the reinforced concrete beams", Am. J. Eng. Res. (AJER), 2(10), 2320-0847.
  6. Ashrafi, H., Bazli, M., Pournamazian Nazafabadi, E. and Vatani Oskouei, A. (2017), "The effect of mechanical and thermal properties of FRP bars on their tensile performance under elevated temperatures", Constr. Build. Mater., 157, 1001-1010. https://doi.org/10.1016/j.conbuildmat.2017.09.160
  7. Attari, N., Amziane, S. and Chemrouk, M. (2012), "Flexural strengthening of concrete beams using CFRP, GFRP and hybrid FRP sheets", Constr. Build. Mater., 37, 746-757. https://doi.org/10.1016/j.conbuildmat.2012.07.052
  8. Banjara, N. and Ramanjaneyulu, K. (2019), "Effective CFRP retrofit strategy for flexural deficient RC beams", Struct. Eng. Mech., 69 (2), 163-175. https://doi.org/10.12989/sem.2019.69.2.163
  9. Bazli, M., Ashrafi, H., Jafari, A., Zhao, X., Gholipour, H. and Vatani Oskouei, A. (2019), "Effect of thickness and reinforcement configuration on flexural and impact behavior of GFRP laminates after exposure to evaluated temperatures", Compos. Part B: Eng., 157, 76-99. https://doi.org/10.1016/j.compositesb.2018.08.054
  10. Beygi, M.H.A., Kazemi, M.T., Nikbin, I.M., Vaseghi Amiri, J., Rabbanifar, S. and Rahmani, E. (2014), "The influence of coarse aggregate size and volume on the fracture behavior and brittleness of self-compacting concrete", Cement Concrete Res., 66, 75-90. https://doi.org/10.1016/j.cemconres.2014.06.008
  11. Carmona, J., Garces, P. and Climent, M.A. (2015), "Efficiency of a conductive cement-based anodic system for the application of cathodic protection, cathodic prevention and electrochemical chloride extraction to control corrosion in reinforced concrete structures", Corrosion Science, 96, 102-111. https://doi.org/10.1016/j.corsci.2015.04.012
  12. Chan, Y.W., Chen, Y.S. and Liu, Y.S. (2003), "Development of bond strength of reinforcement steel in self-consolidating concrete", ACI Struct. J., 100(4), 490-498.
  13. Chellapandian, M., Suriya Prakash, S. and Sharma, A. (2019), "Experimental and finite element studies on the flexural behavior of reinforced concrete elements strengthened with hybrid FRP technique", Compos. Struct., 208, 466-478. https://doi.org/10.1016/j.compstruct.2018.10.028
  14. Chen, Y.F. (2003), "An investigation on confinement behavior of square self-compacting concrete columns", Master dissertation, National Taiwan University, Taiwan.
  15. Di, B., Wang, J., Li, H., Zheng, J., Zheng, Y. and Song, G. (2019), "Investigation of bonding behavior of FRP and steel bars in self-compacting concrete structures using acoustic emission method", Sensors, 19(1), 159-173. https://doi.org/10.3390/s19010159
  16. Djebien, R., Hebhoub, H., Belachia, M., Berdoudi, S. and Kherraf, L. (2018), "Incorporation of marble waste as sand in formation of self-compacting concrete", Struct. Eng. Mech., 67 (1), 87-91. https://doi.org/10.12989/SEM.2018.67.1.087
  17. Esfahani, M. R., Lachemi M. and Kianoush M. R. (2008), "Top-bar effect of steel bars in self-consolidating concrete (SCC)", Eng. Struct., 30, 52-60.
  18. Ghasemi, M., Ghasemi, M.R. and Mousavi, S.R. (2018), "Investigating the effects of maximum aggregate size on self-compacting steel fiber reinforced concrete fracture parameters", Constr. Build. Mater., 162, 674-682. https://doi.org/10.1016/j.conbuildmat.2017.11.141
  19. Hamzeh Keykha, A. (2018), "Numerical investigation of continuous hollow steel beam strengthened using CFRP", Struct. Eng. Mech., 66(4), 439-444. https://doi.org/10.12989/SEM.2018.66.4.439
  20. Hansen, E., Willam, K. and Carol, I. (2001), "A two surface anisotropic damage/plasticity model for plain concrete", Proceedings of the Framcos-4 Conference Paris, Rotterdam, May.
  21. Hogenstad, E. (1951), "A Study Of Combined Bending And Axial Load In Reinforced Concrete Members", Urbana, Ill. University of Illinois 1951,Urbana, Illinois, USA.
  22. Hoque, N. and Jumaat, M. (2018), "Debonding failure analysis of prestressed FRP strengthened RC beams", Struct. Eng. Mech., 66 (4), 543-555. https://doi.org/10.12989/SEM.2018.66.4.543
  23. Huang, H., Qian, C., Zhao, F., Qu, J., Guo, J. and Danzinger, M. (2016), "Improvement on microstructure of concrete by polycarboxylate superplasticizer (PCE) and its influence on durability of concrete", Constr. Build. Mater., 110, 293-299. https://doi.org/10.1016/j.conbuildmat.2016.02.041
  24. kamura, H. and Ouchi, M (1998), "Self- compacting high performance concrete", Concrete Int., 1(4), 378-383.
  25. Kanema, J.M., Eid, J. and Taibi, S. (2016), "Shrinkage of earth concrete amended with recycled aggregates and superplasticizer: Impact on mechanical properties and cracks", Mater. Des., 109, 378-389. https://doi.org/10.1016/j.matdes.2016.07.025
  26. Karamloo, M., Mazloom, M. and Payganeh, G. (2016a), "Effects of maximum aggregate size on fracture behaviors of self-compacting lightweight concrete", Constr. Build. Mater., 123, 508-515. https://doi.org/10.1016/j.conbuildmat.2016.07.061
  27. Karamloo, M., Mazloom, M. and Payganeh, G. (2016b), "Influences of water to cement ratio on brittleness and fracture parameters of self-compacting lightweight concrete", Eng. Fract. Mech., 168, 227-241. https://doi.org/10.1016/j.engfracmech.2016.09.011
  28. Kok, L. (2004), "Effect of beam size and FRP thickness on interfacial shear stress concentration failure mode in FRP strengthened beam", Master Dissertation, National University of Singapore, Singapore.
  29. Lin, C. H. and Lin, S.P. (2005),"Flexural behavior of high-workability concrete columns under cyclic loading", ACI Structural Journal, 102(3), 412-421.
  30. Lin, C. H., Lin, S.P. and Tseng, C. H. (2004), "High workability concrete columns under concentric compression", ACI Struct. J., 101(1), 85-93.
  31. Lu, X.Z., Ten, J.G., Ye, L.P. and Jaing, J.J. (2005), "Bond-slip models for FRP sheets/plates bonded to concrete", Eng. Struct., 24(5), 920-37.
  32. Ma, C., Apandi, N.M., Yung, S.C.S., Hau, N., Haur, L.W., Zawawi Awang, A. and Omar W. (2017), "Repair and rehabilitation of concrete structures using confinement: A review", Constr. Build. Mater., 133, 502-515. https://doi.org/10.1016/j.conbuildmat.2016.12.100
  33. Mardani Aghabaglou, A., Tuyan, M., Yilmaz, G., Arioz, O. and Ramyar, K. (2013), "Effect of different types of superplasticizer on fresh, rheological and strength properties of self-consolidating concrete", Constr. Build. Mater., 47, 1020-1025. https://doi.org/10.1016/j.conbuildmat.2013.05.105
  34. Mastali, M. and Dalvand, A. (2016), "The impact resistance and mechanical properties of self-compacting concrete reinforced with recycled CFRP pieces", Compos. Part B: Eng., 92, 360-376. https://doi.org/10.1016/j.compositesb.2016.01.046
  35. Mazloom, M. (2008), "Estimating long-term creep and shrinkage of high-strength concrete", Cement Concrete Compos., 30(4), 316-326. https://doi.org/10.1016/j.cemconcomp.2007.09.006
  36. Mazloom, M., Afkar, H. and Pourhaji, P. (2018b), "Assessing the ductility of moment frames utilizing genetic algorithm and artificial neural networks", Struct. Monit. Maint., 5 (4), 445-461. https://doi.org/10.12989/SMM.2018.5.4.445
  37. Mazloom, M., Allahabadi, A. and Karamloo, M. (2017), "Effect of silica fume and polyepoxide-based polymer on electrical resistivity, mechanical properties, and ultrasonic response of SCLC", Adv. Concrete Constr., 5(6), 587-611. https://doi.org/10.12989/ACC.2017.5.6.587
  38. Mazloom, M. and Hatami, H. (2015), "The behavior of self-compacting light weight concrete produced by magnetic water", Int. J. Civil, Environ. Struct. Constr. Architect. Eng., 9(12), 1616-1620.
  39. Mazloom, M., Homayooni, S.M. and Miri, S.M. (2018c), "Effect of rock flour type on rheology and strength of self-compacting lightweight concrete", Comput. Concrete, 21(2), 199-207. https://doi.org/10.12989/CAC.2018.21.2.199
  40. Mazloom, M. and Mahboobi, F. (2017), "Evaluating the settlement of lightweight coarse aggregate in self-compacting lightweight concrete", Comput. Concrete, 19(2), 203-210. https://doi.org/10.12989/cac.2017.19.2.203
  41. Mazloom, M. and Miri, M.S. (2017), "Interaction of magnetic water, silica fume and superplasticizer on fresh and hardened properties of concrete", Adv. Concrete Constr., 5(2), 87-99. https://doi.org/10.12989/acc.2017.5.2.087
  42. Mazloom, M., Pourhaji, P., Moosa Farash, A. and Sanati A. (2018a), "Strengthening of concrete structures with buckling braces and buckling restrained braces", Struct. Monit. Maint., 5(3), 391-416. https://doi.org/10.12989/SMM.2018.5.3.391
  43. Mazloom, M. Ramezanianpour, A.A. and Brooks, J.J. (2004), "Effect of silica fume on mechanical properties of high-strength concrete", Cement Concrete Compos., 26(1), 347-357. https://doi.org/10.1016/S0958-9465(03)00017-9
  44. Mazloom, M. and Ranjbar, A. (2010), "Relation between the workability and strength of self-compacting concrete", Proceedings of the 35th Conference on our world in concrete & structure, Singapore, August.
  45. Mazloom, M., Saffari A. and Mehrvand, M. (2015), "Compressive, shear and torsional strength of beams made of self-compacting concrete", Comput. Concrete, 15(6), 935-950. https://doi.org/10.12989/cac.2015.15.6.935
  46. Mazloom, M, Soltani, A., Karamloo, M., Hassanloo, A. and Ranjbar, A. (2018d), "Effects of silica fume, superplasticizer dosage and type of superplastisizer on the properties of normal and self-compacting concrete", Adv. Mater. Res., 7(1), 407-434. https://doi.org/10.12989/AMR.2018.7.1.407
  47. Mazloom, M. and Yoosefi, M.M. (2013), "Predicting the Indirect Tensile Strength of Self Compacting Concrete Using Artificial Neural Networks", Comput. Concrete, 12(3), 285-301. https://doi.org/10.12989/cac.2013.12.3.285
  48. Nunes, S., Figueiras, H., Oliveira, P.M., Coutinho, J.S. and Figueiras, J. (2006), "A methodology to assess robustness of SCC mixtures", Cement Concrete Res., 36(12), 2115- 2122. https://doi.org/10.1016/j.cemconres.2006.10.003
  49. Paultre, P., Khayat, K.H., Cusson, D. and Tremblay, S. (2005), "Structural performance of self-consolidating concrete used in confined concrete column", ACI Struct. J., 102(4), 560-568.
  50. Saqan, E., Rasheed, H. and Alkhrdaji, T. (2018), "Evaluation of the seismic performance of reinforced concrete frames strengthened with CFRP fabric and NSM bars", Compos. Struct., 184, 839-847. https://doi.org/10.1016/j.compstruct.2017.10.069
  51. Sharif, A., Al-Mekhlafi, G. and Al-Osta, M. (2019), "Structural performance of CFRP-strengthened concrete-filled stainless steel tubular short columns", Eng. Struct., 183, 94-109. https://doi.org/10.1016/j.engstruct.2019.01.011
  52. Shin, M. and LaFave, M.L. (2004), "Reinforced concrete edge beam-column-slab connections subjected to earthquake loading", Mag. Concrete Res., 55(6), 273-291. https://doi.org/10.1680/macr.2004.56.5.273
  53. Silva, M., Biscaia, H. and Marreiros, R. (2013), "Bond-slip on CFRP/GFRP-to-concrete joints subjected to moisture, salt fog and temperature cycles", Compos. Part B: Eng., 55, 374-385. https://doi.org/10.1016/j.compositesb.2013.06.015
  54. Taqieddin, Z.N. (2008), "Elasto-Plastic and damage modeling of reinforced concrete", Ph.D. dissertation, Louisiana State University, Baton Rouge LA.
  55. Zhou, L., Zheng, Y. and Taylor, S. (2018), "Finite-element investigation of the structural behavior of basalt fiber reinforced polymer (BFRP)-reinforced self-compacting concrete (SCC) decks slabs in Thompson bridge", Polymers J., 10 (6), 67-702. https://doi.org/10.3390/polym10010067