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Concrete Scanning Identifies Washout Void Under Dam

Airlift Concrete Experts Uses Polyurethane Foam to Fill Washout Void

Using concrete scanning equipment, a void under an AK dam was discovered and repaired by Airlift using polyurethane foam.

Recently, a rainwater washout was identified underneath an Arkansas dam. GPR Arkansas was able to utilize its concrete scanning /ground-penetrating radar to identify the void created by the washout. Then they worked in conjunction with Airlift Concrete Experts to repair the void using polyurethane foam. 

The Concrete Scanning Process

GPR Arkansas inspected the 75-year-old dam. Firstly, they used their concrete scanning/ground-penetrating radar equipment to locate the void. Because of this it was determined that rainwater had washed the fill out from underneath the dam. Additionally, this destabilizes the soil and causes the structural integrity of the dam to be at risk. Ground-penetrating radar uses electromagnetic pulses that are sent into the ground and then bounced back to a receiver. So depending upon the frequency and timing of the signals, a “picture” of what’s below the surface is created. Our team determined that the best course of action would be to use polyurethane foam to repair the void in this case.

The Solution from Airlift Concrete Experts

Airlift Concrete Experts use their polyurethane foam for soil stabilization and filling voids exactly like the one identified at the dam. Our team injected polyurethane foam into the void in order to stabilize the structure of the dam. This sealed the structure and will prevent water from running underneath. The reason that this type of foam is so effective is that polyurethane is water-resistant and permanent. Polyurethane foam works to decrease the permeability of the soil while increasing its load-bearing capacity. In addition, it is easy to install and provides an affordable solution to permanently repair the washout void. Polyurethane foam is also used for:

  • Home Foundations
  • Commercial Foundations
  • Slab Foundations
  • Roads
  • Bridges
  • Highways
  • Tunnels
  • Patios
  • Sidewalks
  • Driveways
  • Pools
  • Porches
  • Railroad Tracks
  • Parking Lots
  • Airport Runways

Finally, contact Airlift Concrete Experts for more information if you are interested in how polyurethane foam can be used for a project that you have, and the process in which it is injected. For more information about concrete scanning and ground-penetrating radar, visit GPR Arkansas. 


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