Prediction of interfacial fracture between concrete and fiber reinforced polymer (FRP) by using cohesive zone modeling

Kyoungsoo Park, Kyungsu Ha, Habeun Choi, Changjoon Lee

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14 Citations (Scopus)


Interfacial debonding between concrete and fiber reinforced polymer (FRP) is investigated through integrating experiments and computations. An experimental program is designed to evaluate interfacial fracture parameters of mode-I through cutting and bonding specimens with an FRP sheet. The evaluated fracture parameters, i.e. the fracture energy and the bonding strength, are confirmed by predicting FRP debonding failure with the cohesive zone modeling approach. In the cohesive zone model, a traction-separation relation for FRP debonding is proposed with a shape index while providing various initial descending slopes. Computational results of the cohesive zone model agree well with three-point bending test results for both FRP debonding and plain concrete fracture. Furthermore, both experimental and computational results demonstrate that the fracture energy and the cohesive strength are essential fracture parameters for the prediction of FRP debonding behavior.

Original languageEnglish
Pages (from-to)122-131
Number of pages10
JournalCement and Concrete Composites
Publication statusPublished - 2015 Oct 1


All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Materials Science(all)

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