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

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.
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01844698
Contributor : Léna Le Roy <>
Submitted on : Thursday, July 19, 2018 - 3:57:33 PM
Last modification on : Wednesday, May 22, 2019 - 10:52:02 AM

Identifiers

  • HAL Id : cea-01844698, version 1

Collections

Citation

S. Ali-Alvarez, P. Ferdinand, S. 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⟩

Share

Metrics

Record views

65