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Conference Papers Year : 2013

Optical Fiber Sensor for corrosion detection and evolution monitoring in reinforced concrete structures

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Abstract

Corrosion of reinforced bars (rebars) in concrete structures is a major issue in civil engineering structures, being its detection and evolution measurement a challenge for applied research. In this project we present a new methodology to detect corrosion and its evolution monitoring, based on the direct rebar-concrete interface changes measurement by the use of Optical Fiber Sensor (OFS) either a Fiber Bragg Grating (FBG) network or Optical Frequency Domain Reflectometry (OFDR) interrogation technique providing distributed strain measurement. A built-in pre-strain profile makes possible the detection of general and pitting corrosion with the same sensor. Accelerated corrosion tests were performed in an electrolytic solution under both pitting and general corrosion. A clear correlation is observed between the evolution of the spectral shift and the corrosion progress thus demonstrating the feasibility of this technique.
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Dates and versions

cea-01844698 , version 1 (19-07-2018)

Identifiers

  • HAL Id : cea-01844698 , version 1

Cite

Shamyr Sadat Ali-Alvarez, Pierre Ferdinand, Sylvain Magne, R. Nogueira. Optical Fiber Sensor for corrosion detection and evolution monitoring in reinforced concrete structures. 9th International Workshop on Structural Health Monitoring: A Roadmap to Intelligent Structures, IWSHM 2013, Sep 2013, Standford, United States. pp.1591-1596. ⟨cea-01844698⟩
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