Title: Improved Sonic Appartus foir Determining the Dynamic Modulus of Concrete Specimens
Author(s): C. E. Goodell
Publication: Journal Proceedings
Appears on pages(s): 53-60
Keywords: no keywords
After a brief introduction to sonic testing and a description of commercial equipment, the appartus built for the Michigan State Highway Department is discussed. Reliable results can be obtained by an unskilled worker with this compact equipment which as twice the frequency band spread of the usual oscillator. A wiring diagram of the sonic appartus is included.