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Fire endurance and residual strength of insulated concrete beams strengthened with near surface mounted reinforcement

Aniello Palmieri (UGent) , Stijn Matthys (UGent) and Luc Taerwe (UGent)
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Abstract
The comparatively weak performance of fiber-reinforced polymer (FRP) strengthened members under fire exposure is a primary factor hindering the application of FRP strengthening in buildings in which fire risk is not negligible. As part of a larger ongoing study investigating the behavior of FRP strengthening systems under fire exposure, an investigation was set up to examine and document the performance of six full-scale near-surface mounted (NSM) FRP-reinforced concrete beams exposed to 1h of fire. All the specimens were preloaded to the service load of the strengthened member. Tests results indicated that, if appropriately insulated, the NSM FRP-strengthened beams can achieve a satisfactory fire endurance of 1h as per fire resistance test specifications. Moreover, this paper also presents a study on the residual performance of fire-tested beams. Results of this study suggest that if the insulation system is able to maintain the adhesive temperature at relatively low value ( for the beam configuration in this test program), the FRP concrete bond degradation under fire is limited, and the FRP-strengthened beam can retain a large part (up to 92% in this test program) of its original strength.
Keywords
RESISTANCE, FRP, SYSTEMS, DESIGN, BARS, Fiber-reinforced polymer, Fire safety, Insulation, Residual strength, Structural members, Strengthening, Near-surface mounted (NSM)

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Chicago
Palmieri, Aniello, Stijn Matthys, and Luc Taerwe. 2013. “Fire Endurance and Residual Strength of Insulated Concrete Beams Strengthened with Near Surface Mounted Reinforcement.” Journal of Composites for Construction 17 (4): 454–462.
APA
Palmieri, Aniello, Matthys, S., & Taerwe, L. (2013). Fire endurance and residual strength of insulated concrete beams strengthened with near surface mounted reinforcement. JOURNAL OF COMPOSITES FOR CONSTRUCTION, 17(4), 454–462.
Vancouver
1.
Palmieri A, Matthys S, Taerwe L. Fire endurance and residual strength of insulated concrete beams strengthened with near surface mounted reinforcement. JOURNAL OF COMPOSITES FOR CONSTRUCTION. ASCE; 2013;17(4):454–62.
MLA
Palmieri, Aniello, Stijn Matthys, and Luc Taerwe. “Fire Endurance and Residual Strength of Insulated Concrete Beams Strengthened with Near Surface Mounted Reinforcement.” JOURNAL OF COMPOSITES FOR CONSTRUCTION 17.4 (2013): 454–462. Print.
@article{3238162,
  abstract     = {The comparatively weak performance of fiber-reinforced polymer (FRP) strengthened members under fire exposure is a primary factor hindering the application of FRP strengthening in buildings in which fire risk is not negligible. As part of a larger ongoing study investigating the behavior of FRP strengthening systems under fire exposure, an investigation was set up to examine and document the performance of six full-scale near-surface mounted (NSM) FRP-reinforced concrete beams exposed to 1h of fire. All the specimens were preloaded to the service load of the strengthened member. Tests results indicated that, if appropriately insulated, the NSM FRP-strengthened beams can achieve a satisfactory fire endurance of 1h as per fire resistance test specifications. Moreover, this paper also presents a study on the residual performance of fire-tested beams. Results of this study suggest that if the insulation system is able to maintain the adhesive temperature at relatively low value ( for the beam configuration in this test program), the FRP concrete bond degradation under fire is limited, and the FRP-strengthened beam can retain a large part (up to 92\% in this test program) of its original strength.},
  author       = {Palmieri, Aniello and Matthys, Stijn and Taerwe, Luc},
  issn         = {1090-0268},
  journal      = {JOURNAL OF COMPOSITES FOR CONSTRUCTION},
  keyword      = {RESISTANCE,FRP,SYSTEMS,DESIGN,BARS,Fiber-reinforced polymer,Fire safety,Insulation,Residual strength,Structural members,Strengthening,Near-surface mounted (NSM)},
  language     = {eng},
  number       = {4},
  pages        = {454--462},
  publisher    = {ASCE},
  title        = {Fire endurance and residual strength of insulated concrete beams strengthened with near surface mounted reinforcement},
  url          = {http://dx.doi.org/10.1061/(ASCE)CC.1943-5614.0000338},
  volume       = {17},
  year         = {2013},
}

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