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