Corrosion detection and evolution monitoring in Reinforced Concrete Structures by the use of Fiber Bragg Grating sensor

Shamyr Sadat Ali-Alvarez (1) , Pierre Ferdinand (1) , Sylvain Magne (1) , R.P. Nogueira (2)

1 LCFO - Laboratoire Capteurs Fibres Optiques
2 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces

Corrosion of reinforced bar (rebar) in concrete structures represents a major issue in civil engineering works, being its detection and evolution a challenge for the applied research. In this work, we present a new methodology to corrosion detection in reinforced concrete structures, by combining Fiber Bragg Grating (FBG) sensors with the electrochemical and physical properties of rebar in a simplified assembly. Tests in electrolytic solutions and concrete were performed for pitting and general corrosion. The proposed Structural Health Monitoring (SHM) methodology constitutes a direct corrosion measurement potentially useful to implement or improve Condition-Based Maintenance (CBM) program for civil engineering concrete structures.

Keywords: instrumentation; Civil engineering works; Condition-based maintenance; Corrosion measurements; Corrosion of reinforced bars; Electrolytic solution; Fiber Bragg Grating Sensors; Rebar; Structural health monitoring; Sensors; Structural health monitoring (SHM); Civil engineering; Concrete buildings; Concrete construction; Concretes; Corrosion; Fiber Bragg gratings; Maintenance; Optical fibers; Reinforced concrete

Domains: Physics [physics]; Physics [physics]; Instrumentation and Detectors [physics.ins-det]; Engineering Sciences [physics]; Civil Engineering; Engineering Sciences [physics]; Optics / Photonic

Shamyr Sadat Ali-Alvarez, Pierre Ferdinand, Sylvain Magne, R.P. Nogueira. Corrosion detection and evolution monitoring in Reinforced Concrete Structures by the use of Fiber Bragg Grating sensor. Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, Mar 2013, San Diego, CA, United States. pp.8692 4U, ⟨10.1117/12.2015145⟩. ⟨cea-01823915⟩