Microdeformation measurement of concrete roadway slabs using fiber Bragg gratings

Main Article Content

Francisco Javier Vélez Hoyos
Claudia Milena Serpa Imbet
Nelson Darío Gómez Cardona

Keywords

fiber optic sensors, optical fiber Bragg gratings, concrete roadway slabs, finite element method

Abstract

This work shows a non–invasive method for micro–deformation measurements of concrete structures using Bragg grating sensors in optical fibers adhered to the surface. Measurements on roadway slabs under a 10 kN static load are made, finding an approximated ratio of 2 : 1 between the deformation registered by the sensors and the values from a computational simulation with the finite element method. We propose the use of these sensors for slab structural monitoring in a road network employing distributed and wavelength multiplexed sensors. This is a first report in Colombia of roadway slabs microdeformation measurement using fiber optic sensors.

PACS: 42.81.-i, 47.11.Fg, 42.79.Dj

MSC: 76M10

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