Acoustic methods for the nondestructive testing of concrete: A review of foreign publications in the experimental field

Acoustic methods for experimental studies of the problems of nondestructive testing that are used in the analysis of the strength and other physical properties of concrete are reviewed on the basis of an analysis of foreign publications. The classical through transmission, pulse-echo, and impact-echo methods, changes in the internal structure of concrete under loading, and factors that influence the correlation between the strength and acoustic-wave velocity are considered.