Durability of the adhesively bonded interface between a composite reinforcement and a steel support

Nowadays, externally bonded composites are currently used for the rehabilitation or strengthening of concrete infrastructures. Such a technique allows to increase the service life of concrete bridges. In the case of steel structures, this technique is much less popular. This may be due to the similarity of composites and steel in terms of stiffness, but also to the reluctance of infrastructures owners with regards to structural adhesive bonding. In theframework of a research project regarding the repair of steel structures and led by IFSTTAR, the Département Laboratoire d?Autun got interested in composite/steel bonded assemblies. This article first introduces the adhesive bonding technique and its advantages, and discusses the stress transfer mechanisms at the composite/steel interface. Then, influence of hydrothermal ageing (at 40°C and 50% relative humidity) or pseudo fatigue cycles on the characteristics of the composite/steel adhesive bond is investigated in order to assess the durability. Although further work is needed, those preliminary results show that the bonding of external composite reinforcements is a suitable technique for steel structures.

  • Authors:
    • CHATAIGNER, Sylvain
    • GAGNON, Arnaud
    • QUIERTANT, Marc
    • BENZARTI, Karim
    • AUBAGNAC, Christophe
  • Publication Date: 2012


  • French

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Filing Info

  • Accession Number: 01493084
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • Files: ITRD
  • Created Date: Sep 17 2013 11:42AM