Radar Inspection of Concrete, Brick and Masonry Structures
Seismic radar was introduced as a geophysical tool for mineral exploration in the 1970’s. Since then, there have been several attempts to use the technique to assess civil engineering structures. For example: Bridge decks and masonry tunnels [1, 2], concrete , bridge decks overlaid with asphalt [4,5], concrete and masonry tunnels , detection of voids under jointed concrete paving , location of piles under an old concrete floor  and the location of leaks in underground pipes . These few references are not intended to be a comprehensive survey, but do indicate the variety of problems for which radar has claimed to be the ideal inspection tool.