Application
1) Testing building foundation piles by crosshole sonic logging.
2) inspecting concrete defects by ultrasonic method, such as uncompacted ,cellular, hole area.
3) Detecting strength of concrete by ultrasonic-rebound combine method.
4) Detecting depth of concrete crevice by ultrasonic method.
5) Detecting defects of one hole by one trigger two receive.
6) Testing dynam performance of geotechnical investigation, rock, concrete
