Abstract
The thermometry using the optical fiber has widely been applied in the field of civil engineering and architecture. In the meantime, it has the problem of receiving damage such as the rupture, because optical fiber is fragile for impacts, etc., when it was embedded in the concrete. Then, the thermo sensor covered the circumference of optical fiber with iron wire to make the improvement for being hard to be cut is developed. In this study, for the purpose of having a grasp of the behavior of the temperature in concrete dams under construction by using this optical fiber thermometer, laboratory tests were carried out to confirm that measurement accuracy of this optical fiber thermometer was equal to that of the conventional temperature sensor (thermocouple) and in a concrete arch dam under construction, the measurement for comparing the optical fiber thermometer with the thermocouple was carried out to evaluate the performance of temperature perception of this optical fiber thermometer.
