AE CHARACTERISTICS OF REINFORCED CONCRETE BEAMS SUBJECTED TO FLEXURAL LOADING AND FUNDAMENTAL INVESTIGATION OF ITS APPLICABILITY TO EVALUATION OF DETERIORATION

Abstract

In this study, AE signals due to cracks occurring dominantly in reinforced concrete (RC) beams was characterized by AE waveform parameters through the model tests for bending cracks, shearing cracks and bond cracks between reinforcing steel bars and concrete. Then in order to verify the validity of the results for these model tests, AE measurement was performed during the bending test for the RC beams. Finally, the loading to the existing RC beams of the in-service aging dock was carried out by moving the dump track on the beams so that the applicability of AE technique to the evaluation of the deterioration of RC beams subjected to flexural loading was examined.