Flexural strengthening of RC beams using near surface mounted fibre reinforced polymers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents an experimental study to investigate the behaviour of Reinforced Concrete (RC) beams strengthened in flexure with Near Surface Mounted (NSM) technique using Glass and Carbon Fibre Reinforced Polymers (GFRP & CFRP). An experimental program consisting of seven full scale reinforced concrete beams were constructed and strengthened in flexure with FRPs. The investigation included three parameters; technique used (NSM or Hybrid), type of FRP used (Carbon or Glass), and amount of FRP used. All beams were tested under four point bending set-up. The test results included behaviour, ultimate capacity, deflection, cracking, and mode of failure. All strengthened beams showed an increase in the capacity ranging between 55 and 133% compared with the reference beam. Most of the strengthened beams had debonded in a sudden failure except the NSM-GFRP strengthened beams. The NSM-CFRP strengthened beams carried larger loads in terms of ultimate capacity than the NSM-GFRP beams but they showed less ductile behaviour. The NSM-GFRP strengthened beam, however, showed good ductile behaviour with high deflection values at ultimate load. This gave amble warning before failure and can be considered as an advantage of strengthening RC beams with NSM-GFRP system.

Original languageEnglish
Title of host publicationIET Conference Publications
PublisherInstitution of Engineering and Technology
Volume2014
EditionCP649
Publication statusPublished - 2014
Event5th Brunei International Conference on Engineering and Technology, BICET 2014 - Bandar Seri Begawan, Brunei Darussalam
Duration: Nov 1 2014Nov 3 2014

Other

Other5th Brunei International Conference on Engineering and Technology, BICET 2014
CountryBrunei Darussalam
CityBandar Seri Begawan
Period11/1/1411/3/14

Fingerprint

Reinforced concrete
Fibers
Polymers
Carbon fiber reinforced plastics
Glass fibers
Carbon fibers
Glass
Carbon

Keywords

  • Beams
  • Fibre Reinforced Polymers
  • Near Surface Mounted
  • Strengthening

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

El-Gamal, S. E., Al-Nuaimi, A., Al-Saidy, A., & Al-Lawati, A. (2014). Flexural strengthening of RC beams using near surface mounted fibre reinforced polymers. In IET Conference Publications (CP649 ed., Vol. 2014). Institution of Engineering and Technology.

Flexural strengthening of RC beams using near surface mounted fibre reinforced polymers. / El-Gamal, S. E.; Al-Nuaimi, A.; Al-Saidy, A.; Al-Lawati, A.

IET Conference Publications. Vol. 2014 CP649. ed. Institution of Engineering and Technology, 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

El-Gamal, SE, Al-Nuaimi, A, Al-Saidy, A & Al-Lawati, A 2014, Flexural strengthening of RC beams using near surface mounted fibre reinforced polymers. in IET Conference Publications. CP649 edn, vol. 2014, Institution of Engineering and Technology, 5th Brunei International Conference on Engineering and Technology, BICET 2014, Bandar Seri Begawan, Brunei Darussalam, 11/1/14.
El-Gamal SE, Al-Nuaimi A, Al-Saidy A, Al-Lawati A. Flexural strengthening of RC beams using near surface mounted fibre reinforced polymers. In IET Conference Publications. CP649 ed. Vol. 2014. Institution of Engineering and Technology. 2014
El-Gamal, S. E. ; Al-Nuaimi, A. ; Al-Saidy, A. ; Al-Lawati, A. / Flexural strengthening of RC beams using near surface mounted fibre reinforced polymers. IET Conference Publications. Vol. 2014 CP649. ed. Institution of Engineering and Technology, 2014.
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AB - This paper presents an experimental study to investigate the behaviour of Reinforced Concrete (RC) beams strengthened in flexure with Near Surface Mounted (NSM) technique using Glass and Carbon Fibre Reinforced Polymers (GFRP & CFRP). An experimental program consisting of seven full scale reinforced concrete beams were constructed and strengthened in flexure with FRPs. The investigation included three parameters; technique used (NSM or Hybrid), type of FRP used (Carbon or Glass), and amount of FRP used. All beams were tested under four point bending set-up. The test results included behaviour, ultimate capacity, deflection, cracking, and mode of failure. All strengthened beams showed an increase in the capacity ranging between 55 and 133% compared with the reference beam. Most of the strengthened beams had debonded in a sudden failure except the NSM-GFRP strengthened beams. The NSM-CFRP strengthened beams carried larger loads in terms of ultimate capacity than the NSM-GFRP beams but they showed less ductile behaviour. The NSM-GFRP strengthened beam, however, showed good ductile behaviour with high deflection values at ultimate load. This gave amble warning before failure and can be considered as an advantage of strengthening RC beams with NSM-GFRP system.

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