Abstract: Combining with aging condition and durability of hydraulic structures in China, the routine non-destructive testing methods and means of quality and aging properties of hydraulic concrete structures are introduced in this paper. Then, the advantages and disadvantages of various methods andresearch prog-ress are analyzed. In view of the outstanding problems and problems existing in on-site inspection and safe-ty assessment, we have developed a non-destructive testing technology system for hydraulic concrete struc-tures based on impact elastic wave, including elastic wave tomography, surface wave method, impact echo method and impact elastic wave test concrete dynamic modulus of elasticity technology. The engineering practice has proved that this system can provide technical supports for the healthe diagnosis, repair and re-inforcement, and safe operation of various types of hydraulic concrete projects.

Keywords：hydraulic structure; concrete; impact elastic wave

(Journal of China Institute of Water Resources and Hydropower Research, Vol. 16, No. 5, 2018)