Sinkhole Repair and Void Fill

Sinkholes and voids can be either man-made or natural. Sinkholes and voids can be created by unused underground utilities, decomposing trash pits, leaking/burst underground utilities that erode soils, poor backfill soils, and several other causes. Voids can be intercepted from the surface using various sizes of drills (depending on depth and size of void). Then grout or concrete can be injected to fill the void and stabilize the adjacent soils. Fill material selection is dependent on project goals but can include cellular grout, polyurethane grout, neat cement slurry, or more tailor-made options. Since the goal is typically to just fill voids, injection pressures are low relative to permeation grouting, however they can be elevated to obtain some of the benefits of permeation grouting (mainly increased strength of adjacent soils).


Applications for Void Fill

  • Sinkhole repair
  • Voids under concrete slabs
  • Remediation of washed out voids
  • Voids due to organic debris decomposition
  • Subsurface crevasse
  • Soil washouts



Click the following pressure grouting topics for more information...

Concrete Slab Jacking

Compaction Grouting

Cellular Grouting

Chemical Grouting

Permeation Grouting

Sinkhole Repair and Void Fill

Annular Space Grouting

Slush Grouting


“Serving the Southeast”