Nondestructive Testing Applications for FRP Reinforced or Strengthened Concrete Elements

Dolati, Seyed Saman Khedmatgozar; Malla, Pranit; Polanco, Jesus Ortiz; Mehrabi, Armin; Nanni, Antonio

doi:10.1061/9780784484777.020

Cited by 1 publication

(1 citation statement)

References 8 publications

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“…Whereas, Guo et al (2022) proposed newly concrete-filled FRP tube columns with encased FRP spiral reinforced bars, including an exhaustive lab study of the influence of the spiral type and pitch to confirm the effectiveness of the totally confined columns. Furthermore, a novel method with economical and rapid alternative for splicing prestressed precast concrete pile splices using FRP materials sheets has been recently introduced to provide improved strength (Dolati and Mehrabi, 2021; Dolati and Mehrabi, 2022a; Mehrabi and Dolati, 2022; Dolati and Mehrabi, 2022b; Mehrabi, 2020).…”

Section: Introductionmentioning

confidence: 99%

Experimental behavior and reliability of predamaged concrete columns externally repaired with FRP spiral strips under axial compression

Ahmed

Salem²,

Taleb³

et al. 2022

WJE

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Purpose This paper aims to investigate the experimental behavior and the reliability of concrete columns repaired using fiber-reinforced polymers (FRPs) under axial compression loading. The expression of the ultimate axial resistance was assessed from the experimental data of damaged concrete cylinders repaired by externally bonded double-FRP spiral strips. Design/methodology/approach The tested columns bearing capacity mainly depends of the elasticity modulus of both damaged and undamaged concrete have been considered in addition to the applied load and the cylinder diameter as random variables in the expression of the failure criterion. The reliability indicators were assessed using first order second moment method. Findings The emphasized test results, statistically fitted show that the strength has been retrofitted for all repaired specimens whatever the degree of initial damage. However, the gain in axial strength is inversely proportional to the degree of damage. Originality/value The efficiency of a new FRP repair procedure using double-spiral strips was studied. This research provides a technical and economical solution for retrofitting existing concrete columns. Finally, the random character of the variables that govern the studied system shows the accuracy and safety of the proposed original design.

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