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27 June 2002 Concrete beam curing process and flexural test with fiber-Bragg-grating based transducers
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The use of Fiber Bragg Grating (FBG) technology for the measurement of strain and temperature in civil engineering structures have been previously well demonstrated. A lot of work have to be done to achieve the new transducer technique to be able to compete with well established strain gauges. The measurement of strain and temperature within concrete beams is a niche of application where fiber optic transducers have advantages over conventional techniques. Fiber optic sensors can be inserted in a concrete beam for this purpose and debt to the known characteristics of fiber optic a higher durability can be achieved. In order to prove the ability of this type of transducers to make the measurements a set of FBG were fixed to the steel bars within the concrete beam and other set of long gauge FBG based transducers were embedded in the beam. The former were used for steel bar strain measurement and the later were employed for structural concrete beam sensing. During the concrete curing process, temperature of the beam were monitorized. After that, a complete flexural test was made while the beam was monitorized using traditional laboratory measurement techniques. Interesting conclusions have been obtained and will be presented.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Juan Echevarria, Cesar Jauregui, Antonio Quintela, Miguel A. Rodriguez, Roberto Garcia, German Gutierrez, and Jose Miguel Lopez-Higuera "Concrete beam curing process and flexural test with fiber-Bragg-grating based transducers", Proc. SPIE 4694, Smart Structures and Materials 2002: Smart Sensor Technology and Measurement Systems, (27 June 2002);

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