Hua Yan1,2,3,*, Bo Song1,3, Mansheng Wang4
Structural Durability & Health Monitoring, Vol.14, No.3, pp. 265-282, 2020, DOI:10.32604/sdhm.2020.06403
Abstract Analyze and compare the basic principles of ultrasonic detection of
voids in concrete, choose ZBL-U520/510 non-metallic ultrasonic detector, and
use the opposite detection method to test the void size in the joints of prefabricated concrete structures. The results show that: ultrasonic method by testing
the waveform, sound, and speed of sound analysis can effectively determine
the position of the defect, and through the conversion formula can estimate the
void size. Ultrasonic parameters are used to distinguish the internal defects of
Assembly concrete. Sometimes there are different results with different parameters. It is difficult for engineers to directly determine the internal… More >
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