Void Detection

What Causes Voids?

GPR void detection for locations near St. Louis and Kansas CityWhen voids form beneath the concrete, they can cause many issues such as settlement, cracking, and sinking foundations. These voids can form due to several reasons such as:

  • Soil Shrinkage – When there are periods of hot and dry weather, soil shrinkage can form voids beneath foundations and concrete.
  • Erosion – Excessive rainfall and melting snow can wash away the soil under your foundation and concrete creating voids.
  • Hydrostatic Pressure – Heavy precipitation can also lead to an increase in hydrostatic pressure in the soil creating voids and causing the foundation to shift, settle, and sink.
  • Heaving and Settling – Varying temperatures will cause the ground to freeze and thaw, which can cause voids to form.

As a home or business owner, you may not even be aware these voids are occurring. This is why it is important to contact a professional with experience in void detection. Polyjacking.com can inspect your home or business using a Ground Penetrating Radar (GPR) for void detection in Missouri and Kansas.

Using GPR to Find Voids

Void detection Kansas City and St. LouisGPR uses a high-frequency radar antenna and advanced signal software to accurately locate voids and objects. GPR is fast, accurate, and inexpensive. This method of void detection detects embedded utilities, conduit, PVC, rebar, and tension cables. GPR prevents costly and potentially dangerous mistakes, such as cutting utilities or rebar. It is a much quicker and less disruptive method than other void detection methods such as X-rays.

If voids are detected, we use high-density polyurethane foam to fill the voids. This polyurethane foam will expand to over 20 times its liquid volume to fill the entire void. The curing time is quick, so you can use the affected area about 15 minutes after the repair is completed. Poly trucks are used for the installation process. This method is relatively simple.

  1. A small 5/8″ hole is drilled through the affected area.
  2. Using our highly specialized system, polyurethane foam is injected into the void. As it expands, it fills the entire void.
  3. Lastly, the holes are filled, the site cleaned up, and the equipment is removed.

Due to the short hardening time of the polyurethane material, the concrete surface is immediately ready for use. The dense polyurethane material is impervious to water preventing future erosion problems. Don’t let voids beneath your foundation or concrete cause you more expensive repairs. Contact the professionals at Polyjacking.com, a division of Pro Foundation Technology today!

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