Title: Wave Velocity in Concrete
Author(s): Johannes Anderson and Poul Nerenst
Publication: Journal Proceedings
Appears on pages(s): 613-635
Keywords: no keywords
Nondestructive testing of concrete has aroused increasing interest throughout the world as it presents a new approach to determination of concrete quality. A Danish timing device and its application to determination of the wave velocity in concrete specimens is described. The progress of hardening of concrete specimens was followed, and a hypothesis fpr the relation between wave velocity and age is presented. The method has been used on concrete in situ including measurements of concrete members damaged by exposure to tie or freezing at an early age. Measurements on concrete pavements give wave velocities with small variation. An appendix presents detailed procedure for calculating wave velocity and an estimate of concrete homogeneity.