Title:
Impulse Radar Applications
Author(s):
Malcom K. Lim
Publication:
Concrete International
Volume:
23
Issue:
8
Appears on pages(s):
64-68
Keywords:
DOI:
Date:
8/1/2001
Abstract:
Impulse radar is a valuable tool for quickly scanning large concrete surface areas and detecting unseen conditions such as the presence of reinforcing steel, voids, or thin spots in floors. An experienced operator with the right equipment can qualitatively compare large areas for defects that can be confirmed, if necessary, by destructive test methods such as coring. The principles of impulse radar are similar to those for the radar used in air traffic control or when a state trooper detects the speed of a car. A signal is first transmitted from an antenna. When the signal encounters an object, part of the signal is reflected back to the antenna and analyzed to calculate the location of the airplane or the speed of the car. This same principle allows radar to be used in many different construction-industry applications that include finding buried tanks or utility lines.