The company NAMALAB SA has top-notch and modern ground penetrating radar (GPR) equipment from GSSI that allows the execution of fast and effective geophysical surveys. Ground-penetrating radar uses high-frequency electromagnetic pulses to locate in the subsurface the interfaces between materials of different dielectric constants.The data collected by the GPR is processed with Radan software that allows viewing and documentation in a 2D and 3D environment, as well as the application of filters to remove background noise. It also offers the ability to download and integrate topographic data collected from ground-penetrating radar passes through Spectra Precision's SP60 high-end GNSS receiver.
The available GPR system includes the following antennas:
Dual frequency (300 and 800 MHz) GSSI UtilityScan Pro DF digital antenna
The built-in digital antenna operates simultaneously on two frequencies (300 and 800 MHz), allowing the detection of shallow and deeper targets in one scan, making data collection fast and efficient. With the UtilityScan Pro DF, the location and depth of metallic and non-metallic objects can be located and identified, including underground utility networks such as natural gas, telecommunications, sewer and water pipes, underground storage tanks and PVC pipes.
Typical uses of the digital antenna include:
- Detection of underground networks - metallic and non-metallic conduits
- Locating foundations of buildings and technical works
- Investigation of geological background and identification of shallow landforms
- Archaeological research
- Inspection of pavements
100 MHz GSSI Model 3207F bistatic antenna
For deeper exploration of the subsoil, the 100 MHz antenna (Model 3207F) is available, which allows effective imaging of geological structures and the rocky background at a greater depth (exploration range up to 30m depth). Typical uses of the 100 MHz bistatic antenna include:
- Locating deep foundations Investigation of geological and geotechnical conditions at medium depth
- Locating karst landforms
- Depth detection of bedrock
- Groundwater level detection, etc.
2000 MHz GSSI Model 62000 Palm Antenna
The handheld antenna offers a reliable and non-destructive inspection method for concrete inspection, locating reinforcement, conductors, tensioners, void pockets and determining concrete slab thickness in real time.
This particular model allows the safe detection of metallic and non-metallic elements within the concrete at a depth of up to 30 cm, in narrow and hard-to-reach spaces.
Typical uses of the 2000 MHz handheld antenna include:
- Concrete inspection: detection of metallic and non-metallic targets in walls, floors and ceilings
- Structural inspection of bridges, monuments, walls, towers, tunnels, balconies, garages, decks
- Condition assessment graphical correlation of concrete condition for rehabilitation planning
- Plate thickness measurement
- Locating void pockets
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