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The work reported in this paper is part of a study intended to assess the long-term performance of surface repairs that were carried out on reinforced concrete elements of the Champlain Bridge (Canada), recently decommissioned after 60 years in service. The dismantled bridge has provided unique real-size specimens exposed to severe weathering, including freeze-thaw cycles and de-icing salts. Among these, repaired infill slabs and prismatic sections of a main pier were selected to conduct an in-depth evaluation of bond and cracking. The results reveal that while some repairs exhibited variable bond strength and some cracking, they overall performed satisfactorily. This study highlights the critical role of material selection and repair techniques in prolonging the life of concrete structures under harsh conditions.

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Performance Evaluation of Surface Repair on Decommissioned Champlain Bridge Concrete

  • 会议论文

  • 发表日期：

    2025年

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  • Stéphanie C. Blanchard,
  • Richard Gagné,
  • Benoit Bissonnette

摘要

The work reported in this paper is part of a study intended to assess the long-term performance of surface repairs that were carried out on reinforced concrete elements of the Champlain Bridge (Canada), recently decommissioned after 60 years in service. The dismantled bridge has provided unique real-size specimens exposed to severe weathering, including freeze-thaw cycles and de-icing salts. Among these, repaired infill slabs and prismatic sections of a main pier were selected to conduct an in-depth evaluation of bond and cracking. The results reveal that while some repairs exhibited variable bond strength and some cracking, they overall performed satisfactorily. This study highlights the critical role of material selection and repair techniques in prolonging the life of concrete structures under harsh conditions.