METHOD FOR QUANTITATIVELY EVALUATING CORROSION AMOUNT OF REINFORCING BAR OF CONCRETE STRUCTURE WITH ACOUSTIC EMISSION (AE)

摘要

PROBLEM TO BE SOLVED: To provide a method for quantitatively evaluating a corrosion amount of a reinforcing bar of concrete structure using acoustic emission.;SOLUTION: The method for quantitatively evaluating a corrosion amount of a reinforcing bar of concrete structure includes the steps of attaching a piezoelectric element sensor on the reinforcement bar concrete structure, detecting acoustic emission generated with an external load applied to the concrete structure, and evaluating with the ratio between the hit numbers H_low and H_high that a peak frequency f obtained from treatment of the acoustic emission satisfies f₁≤ff₂ in the former, and f₃≤ff₄ in the latter to arbitrary frequencies f₁, f₂, f₃, f₄ (f₁f₂≤f₃f₄).;COPYRIGHT: (C)2011,JPO&INPIT