When concrete settles, it can cause serious damage to the structures they support. In most cases, concrete settlement can be traced to the dehydration and shrinking of the soil under the concrete, water erosion, poorly compacted sub grade and the washout of soil.
In each situation, a void is created under the concrete slab by the shifting of the soil or by a reduction of soil volume. The concrete may not be sufficiently strong enough to hold the load, causing the stressed concrete slab to crack, break, and eventually settle to fill the void.
The PROLIFT process
1.First, a series of 5/8" holes are drilled in an off-set pattern.
2. A two part resin based specialized poly-urethane foam is injected into each drilled hole leaving time for the foam to expand, making sure to fill all voids. If any open areas need to be free-sprayed, our team will make sure no empty spaces or caverns are left behind.
3. Once existing voids are perfectly filled and concrete panel is completely supported and undersealed. Solid, dense polyurethane foam material is unaffected by water eliminating future water issues, after work is performed and is complete concrete may be used immediately. The holes are then filled with a high density cement grout and finished to match the existing concrete. Our team are experts, they know how to put just the right amount of material to support the slab, but never too much to over-lift or crack the concrete.
"Sometimes we can free- spray, leaving no scars behind."
COMMON CAUSES OF VOIDS:
Dehydrated Soil Beneath A Slab
Poorly Compacted sub grade
Soil Washout — Plumbing Leaks
Water erosion (drains, sub pumps, etc)
Animals and pests