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Reviewing the FRP Strengthening Systems

Received: 21 January 2015    Accepted: 22 January 2015    Published: 24 March 2015
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Abstract

Several methods have been invented for flexural strengthening of RC beams using the FRP materials in recent years. These techniques are categorized into two main groups: Externally Bonded Reinforcement (EBR) techniques and Near Surface Mounted (NSM) techniques. The EBR family contains EBR (with conventional surface preparation), EBROG, EBRIG, MF-EBR, HOLING methods. The NSM family contains NSM-FRP Rods, NSM-FRP Sheets, NSM-MMFRP Rods methods. The EBR family techniques Despite the ease of implementation have weaknesses such as vulnerability against sever environmental conditions. Although the NSM techniques, have longer installation time than the EBR family techniques but in these methods the strengthening materials are greatly protected against the environmental effects. In this paper, the various techniques for flexural strengthening of RC members from both the EBR and NSM families have been fully described and advantages and disadvantages of each technique have been discussed.

Published in American Journal of Civil Engineering (Volume 3, Issue 2-2)

This article belongs to the Special Issue Research and Practices of Civil Engineering in Developing Countries

DOI 10.11648/j.ajce.s.2015030202.18
Page(s) 38-43
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Externally Bonded Reinforcement, Near Surface Mounted, Fiber Reinforced Polymers

References
[1] A. Carolin, "Carbon Fiber Reinforced Polymers for Strengthening of Structural Elements," Doctoral Thesis, Lulea University of Technology, Sweden, p. 247, 2003.
[2] H. Nordin, " Fiber Reinforced Polymers in Civil Engineering," PhD. Thesis, Lulea University of Technology, Sweden, p. 57, 2003.
[3] S. M. Soliman, "Flexural Behaviour of Reinforced Concrete Beams Strengthened with Near Surface Mounted FRP Bars," Ph.D Thesis, University of Sherbrooke, Sherbrooke, Quebec, Canada, p. 12, 2008.
[4] M. Arduini, A. Nanni, "Behavior of Precracked RC Beams Strengthened with Carbon FRP Sheets," Journal of Composites for Construction, Vol. 1, No. 2, pp. 63–70, 1997.
[5] D. M. Nguyen, T. K. Chan,H. K. Cheong, "Brittle Failure and Bond Development Length of CFRP-Concrete Beams, " ASCE, Journal of Composites for Construction, Vol. 1, No. 5, pp. 7-12, 2001.
[6] P. Mukhopadhyaya, N. Swamy, "Interface Shear Stress: A New Design Criterion for Plate Debonding," ASCE, Journal of Composites for Construction, Vol. 1, No. 5, pp. 35-43, 2001.
[7] N. F. Grace, G. A. Sayed, A. K. Soliman, K. R. Saleh, "Strengthening of Reinforced Concrete Beams Using Fiber Reinforced Polymer (FRP) Laminates," Journal of Structures, ACI, Vol. 5, No. 96, pp. 865-74, 1999.
[8] D. Mostofinejad, E. Mahmoudabadi, "Grooving as an Alternative Method of Surface Preparation to Postpone Debonding of FRP Laminates in Concrete Beams," Journal of Composites for Construction, ASCE, V. 6, No. 14, pp. 804-11, 2010.
[9] D. Mostofinejad, S. M. Shameli, "Externally Bonded Reinforcement In Grooves (EBRIG) Technique to Postpone Debonding of FRP Sheets in Strengthened Concrete Beams," Journal of Construction and Building Materials, Vol. 38, pp. 751-758, 2013.
[10] F. Micelli, A. Rizzo, D. Galati, "Anchorage of Composite Laminates in RC Flexural," Journal of Composites for Construction,Vol. 3, No. 11, pp. 117-26, 2010.
[11] J. M. Sena-Cruz, J. A. O. Barros, M. R. F. Coelho, L. F. F. T. Silva, "Efficiency of Different Techniques in Flexural Strengthening of RC Beams under Monotonic and Fatigue Loading," Construction and Building Materials, No. 29, pp. 175-182, 2012.
[12] M. R. Eftekhar, M. Yaqubi, "Holing method to postpone debonding in strengthened RC beams with FRP," 4th annual national conference of concrete, Iran, 2012.
[13] A. Hajihashemi, D. Mostofinejad, M. Azhari, "Investigation of RC Beams Strengthened with Prestressed NSM CFRP Laminates," ASCE, Journal of Composites for Construction, Vol. 6, No. 15, pp. 887-95, 2011.
[14] L. De Lorenzis, A. Nanni, "Shear Strengthening of Reinforced Concrete Beams with Near-Surface Mounted FRP Rods," ACI Structural Journal, Vol. 98, No. 1, pp. 60-68, 2001.
[15] A. Rizzo, L. De Lorenzis, "Behavior and capacity of RC beams strengthened in shear with NSM FRP reinforcement," Journal of Composites for Construction, Vol. 5, No. 2, p. 114, 2001.
[16] M. Jalali, M. K. Sharbatdar, J. Fei-Chen, F. Jandaghi Alaee, "Shear Strengthening of RC Beams Using Innovative Manually Made NSM FRP Bars," Construction and Building Materials Journal,Vol. 36, pp. 990-1000, 2011.
Cite This Article
  • APA Style

    Seyyed Mohammad Banijamali, Mohammad Reza Esfahani, Shoeib Nosratollahi, Mohammad Reza Sohrabi, Seyyed Roohollah Mousavi. (2015). Reviewing the FRP Strengthening Systems. American Journal of Civil Engineering, 3(2-2), 38-43. https://doi.org/10.11648/j.ajce.s.2015030202.18

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    ACS Style

    Seyyed Mohammad Banijamali; Mohammad Reza Esfahani; Shoeib Nosratollahi; Mohammad Reza Sohrabi; Seyyed Roohollah Mousavi. Reviewing the FRP Strengthening Systems. Am. J. Civ. Eng. 2015, 3(2-2), 38-43. doi: 10.11648/j.ajce.s.2015030202.18

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    AMA Style

    Seyyed Mohammad Banijamali, Mohammad Reza Esfahani, Shoeib Nosratollahi, Mohammad Reza Sohrabi, Seyyed Roohollah Mousavi. Reviewing the FRP Strengthening Systems. Am J Civ Eng. 2015;3(2-2):38-43. doi: 10.11648/j.ajce.s.2015030202.18

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  • @article{10.11648/j.ajce.s.2015030202.18,
      author = {Seyyed Mohammad Banijamali and Mohammad Reza Esfahani and Shoeib Nosratollahi and Mohammad Reza Sohrabi and Seyyed Roohollah Mousavi},
      title = {Reviewing the FRP Strengthening Systems},
      journal = {American Journal of Civil Engineering},
      volume = {3},
      number = {2-2},
      pages = {38-43},
      doi = {10.11648/j.ajce.s.2015030202.18},
      url = {https://doi.org/10.11648/j.ajce.s.2015030202.18},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.s.2015030202.18},
      abstract = {Several methods have been invented for flexural strengthening of RC beams using the FRP materials in recent years. These techniques are categorized into two main groups: Externally Bonded Reinforcement (EBR) techniques and Near Surface Mounted (NSM) techniques. The EBR family contains EBR (with conventional surface preparation), EBROG, EBRIG, MF-EBR, HOLING methods. The NSM family contains NSM-FRP Rods, NSM-FRP Sheets, NSM-MMFRP Rods methods. The EBR family techniques Despite the ease of implementation have weaknesses such as vulnerability against sever environmental conditions. Although the NSM techniques, have longer installation time than the EBR family techniques but in these methods the strengthening materials are greatly protected against the environmental effects. In this paper, the various techniques for flexural strengthening of RC members from both the EBR and NSM families have been fully described and advantages and disadvantages of each technique have been discussed.},
     year = {2015}
    }
    

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    T1  - Reviewing the FRP Strengthening Systems
    AU  - Seyyed Mohammad Banijamali
    AU  - Mohammad Reza Esfahani
    AU  - Shoeib Nosratollahi
    AU  - Mohammad Reza Sohrabi
    AU  - Seyyed Roohollah Mousavi
    Y1  - 2015/03/24
    PY  - 2015
    N1  - https://doi.org/10.11648/j.ajce.s.2015030202.18
    DO  - 10.11648/j.ajce.s.2015030202.18
    T2  - American Journal of Civil Engineering
    JF  - American Journal of Civil Engineering
    JO  - American Journal of Civil Engineering
    SP  - 38
    EP  - 43
    PB  - Science Publishing Group
    SN  - 2330-8737
    UR  - https://doi.org/10.11648/j.ajce.s.2015030202.18
    AB  - Several methods have been invented for flexural strengthening of RC beams using the FRP materials in recent years. These techniques are categorized into two main groups: Externally Bonded Reinforcement (EBR) techniques and Near Surface Mounted (NSM) techniques. The EBR family contains EBR (with conventional surface preparation), EBROG, EBRIG, MF-EBR, HOLING methods. The NSM family contains NSM-FRP Rods, NSM-FRP Sheets, NSM-MMFRP Rods methods. The EBR family techniques Despite the ease of implementation have weaknesses such as vulnerability against sever environmental conditions. Although the NSM techniques, have longer installation time than the EBR family techniques but in these methods the strengthening materials are greatly protected against the environmental effects. In this paper, the various techniques for flexural strengthening of RC members from both the EBR and NSM families have been fully described and advantages and disadvantages of each technique have been discussed.
    VL  - 3
    IS  - 2-2
    ER  - 

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Author Information
  • Dept. of Civil Engineering, Ferdowsi University of Mashhad (FUM), Mashhad, Iran

  • Dept. of Civil Engineering, Ferdowsi University of Mashhad (FUM), Mashhad, Iran

  • Dept. of Civil Engineering, University of Sistan and Baluchestan (USB), Zahedan, Iran

  • Dept. of Civil Engineering, University of Sistan and Baluchestan (USB), Zahedan, Iran

  • Dept. of Civil Engineering, University of Sistan and Baluchestan (USB), Zahedan, Iran

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