Computers and Concrete

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Design-oriented strength and strain models for GFRP-wrapped concrete

  • Messaoud, Houssem (Laboratory of Structures, Geotechnics and Risks (LSGR), Department of Civil Engineering, Hassiba Benbouali University of Chlef) ;
  • Kassoul, Amar (Laboratory of Structures, Geotechnics and Risks (LSGR), Department of Civil Engineering, Hassiba Benbouali University of Chlef) ;
  • Bougara, Abdelkader (Laboratory of Structures, Geotechnics and Risks (LSGR), Department of Civil Engineering, Hassiba Benbouali University of Chlef)
  • Received : 2020.03.27
  • Accepted : 2020.09.11
  • Published : 2020.09.25
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Abstract

The aim of this paper is to develop design-oriented models for the prediction of the ultimate strength and ultimate axial strain for concrete confined with glass fiber-reinforced polymer (GFRP) wraps. Twenty of most used and recent design-oriented models developed to predict the strength and strain of GFRP-confined concrete in circular sections are selected and evaluated basing on a database of 163 test results of concrete cylinders confined with GFRP wraps subjected to uniaxial compression. The evaluation of these models is performed using three statistical indices namely the coefficient of the determination (R2), the root mean square error (RMSE), and the average absolute error (AAE). Based on this study, new strength and strain models for GFRP-wrapped concrete are developed using regression analysis. The obtained results show that the proposed models exhibit better performance and provide accurate predictions over the existing models.

Keywords

References

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