Ground Penetrating Radar
To detect underground voids, Polyjacking.com uses a Ground Penetrating Radar (GPR). GPR uses a high-frequency radar antenna and advanced signal software to accurately locate underground structures, voids, and objects.
GPR is also used for the inspection of concrete walls, structures, and slab on grade to detect embedded utilities, conduit, PVC, rebar, and tension cables. This allows for accurate diagnosis of concrete problems with time and money-saving assessments before construction and alteration of existing concrete.
This helps contractors avoid costly and potentially dangerous mistakes, like cutting utilities or rebar.
Click HERE to learn about our GPR units.
GPR Void Detection & Other GPR Uses
When it comes to void
detection, GPR is the go-to tool
for many concrete-lifting
experts. Using the radar, we can
find the location of voids under
your foundation without having
to remove the concrete. This
allows us to accurately fill the
voids, lifting your concrete
slab back to the original
The GPR is very useful
in void detection since it can
scan larger areas much quicker
than other methods, such as
GPR is also used to detect subsurface geological features like rock shelves and natural obstructions before construction. GPR helps assess construction sites avoiding previously unforeseen problems that might delay work or increase costs on projects.
If a utility or electrical line
is not located before drilling
through the concrete slab, the
results could be disastrous.
Using GPR to find these hazards
before the lifting process is
one of the ways we strive to
operate safely and effectively.
In addition to being used for
foundation repair and slab
lifting purposes, Ground
Penetrating Radars can also be
used in a wide variety of other
applications, such as in
cemeteries, exploratory digs,
landfills, streets, etc. To
learn more about how we use GPR,
contact Polyjacking.com today.
Uses of Ground Penetrating Radar (GPR)
Void Detection - Quickly detects and images subsurface voids, so they can be filled preventing further damage to roads, highways, taxiways, concrete slabs, and more.
- Concrete Inspection - Accurately locates and images objects and structures embedded in concrete like rebar, tendons, conduit, tension cables, PVC, and fiber optic cables.
- Geological/Forensic Applications - Locates and images underground structures and geological features like USTs (underground storage tanks), unmarked gravesites, rock shelves, and groundwater resources.
- Bridge Inspection - Comprehensively inspects and assesses bridge decks for depth of cover to reinforcing steel and locations of any voids or cracks.
Advantages of Ground Penetrating Radar (GPR)
- Accuracy - High-frequency antennas and computer-based signal analysis ensure an accurate location image in real-time.
- 3-D Images - Locate subsurface features and objects on X, Y, and Z-axes.
- Fast - GPR units are portable onsite and provide instant location results.
- Cost Reducing - a fraction of the cost of X-ray methods with considerably less time spent on site.
- Safe - GPR uses a benign electromagnetic pulse (UHF/VHF frequencies). X-rays use a radiation source and require the evacuation of the site and surrounding area.