The Measurement of Concrete Deformations at Early Age using Fiber-Optic Bragg Grating Sensors

광섬유 GRATING SENSOR를 이용한 초기재령 콘크리트의 변형 측정

The deformations of concrete specimens were measured at early at early ages, in order to verify the applicability of FBG(Fiber Bragg Grating) sensors. The FBG sensors were directly buried at various locations in the beam-type RC specimens at the time of fabrication. In this experiment, the changes of strains in concrete at early age were successfully measured as the movement in wavelength of light signals. The FBG sensors may be a very effective tool to investigate the mechanical/thermal behavior inside of concrete structures.