Experimental and analytical investigations for behaviors of RC beams strengthened with tapered CFRPs

Naeun Kim, Young Hee Kim, Hee Sun Kim

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This study investigates structural and mechanical behaviors of RC (Reinforced concrete) beams strengthened with tapered CFRP (Carbon fiber reinforced polymer) sheets having various configurations. Toward this goal, experiments are performed on RC beams strengthened with four layers of CFRP sheets and each layer of the CFRP is prepared to have different length. Experimental results show that tapered CFRPs have better strengthening effect than non-tapered CFRP sheets and maximum loads of the beams with tapered CFRPs are governed by the length of first CFRP layer rather than total length of CFRP layers. In addition, analyses are performed using FE (Finite Element) models including cohesive elements to predict debonding behaviors between FRP and concrete elements. The predicted results from the FE models show good agreement with the experimental results.

Original languageEnglish
Pages (from-to)1067-1081
Number of pages15
JournalStructural Engineering and Mechanics
Volume53
Issue number6
DOIs
StatePublished - 25 Mar 2015

Keywords

  • Analytical method
  • Composites
  • Experimental investigation
  • Fiber reinforced
  • Finite Element Method (FEM)

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