Concrete structures quality inspection method and concrete structure quality inspection equipment

摘要

PPROBLEM TO BE SOLVED: To provide a concrete structure quality inspection method and a concrete structure quality inspection device, which inspects "covering thickness" even if a magnetic body is included in concrete, and also inspects highly accurately a concrete strength without being influenced by the shape of the concrete structure or by mutual reinforcements. PSOLUTION: A propagation velocity is determined based on a phase difference between an oscillation signal applied to a sensor element 10A and a reception signal acquired by receiving the oscillation signal by a sensor element 10B, and on a distance between each sensor element 10A, 10B. The 'covering thickness' is determined from a phase difference between an oscillation signal applied to an oscillation element 11 and a reception signal acquired by receiving the oscillation signal by a sensor element 10C, and the propagation velocity. A concrete 21 temperature is detected by temperature sensor elements 106 provided on each sensor element 10A-10C, and the concrete 21 strength is estimated from an integrated temperature value acquired by integrating the temperature at every fixed time. PCOPYRIGHT: (C)2009,JPO&INPIT