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Thermoplastic Fibre-Reinforced Polymer (FRP) reinforcing bars (rebars) are currently being developed by several manufacturers as an alternative solution for the reinforcement of concrete structures. These rebars combine excellent mechanical properties and corrosion resistance, comparable to their thermosetting counterparts, with the added advantage of being bendable onsite at elevated temperatures. However, several key aspects of these innovative materials remain under investigation, such as their bond behavior with concrete and durability under service conditions. This study presents an experimental program aimed at investigating the interfacial behavior between ThermoPlastic Glass FRPs (TP-GFRPs) rebars and concrete. Pull-out tests were performed on specimens manufactured with TP-GFRP rebars made from Elium TP resin (Arkema). The influence of various parameters, such as rebar diameter and surface finish, was examined. The local strain profile along the concrete-to-FRP rebar interface during pull-out tests was also measured by a Distributed Fiber Optic Sensing (DFOS) system.

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Experimental Investigation on the Bond Behavior Between Thermoplastic GFRP Rebars and Concrete

  • 会议论文

  • 发表日期：

    2026年

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  • Maha Fodda,
  • Sylvain Chataigner,
  • Ludwig Battais,
  • Xavier Chapeleau,
  • Arnaud Rolland,
  • Marc Quiertant,
  • Karim Benzarti

摘要

Thermoplastic Fibre-Reinforced Polymer (FRP) reinforcing bars (rebars) are currently being developed by several manufacturers as an alternative solution for the reinforcement of concrete structures. These rebars combine excellent mechanical properties and corrosion resistance, comparable to their thermosetting counterparts, with the added advantage of being bendable onsite at elevated temperatures. However, several key aspects of these innovative materials remain under investigation, such as their bond behavior with concrete and durability under service conditions. This study presents an experimental program aimed at investigating the interfacial behavior between ThermoPlastic Glass FRPs (TP-GFRPs) rebars and concrete. Pull-out tests were performed on specimens manufactured with TP-GFRP rebars made from Elium TP resin (Arkema). The influence of various parameters, such as rebar diameter and surface finish, was examined. The local strain profile along the concrete-to-FRP rebar interface during pull-out tests was also measured by a Distributed Fiber Optic Sensing (DFOS) system.