Compaction grouting, also called pressure grouting or low mobility grouting, is a form of soil stabilization that's done by pumping grout into the ground through threaded steel casings under high pressure.
It may, for example, be used to fill subsurface voids or fissures in limestone bedrock. We also use this technique to repair or prevent sinkhole damage. Where slurry grouting permeates and solidifies soils, compaction grouting densifies and replaces soils.
Compaction grouting is often used in combination with slurry grouting. The former is typically stopped above depths of 20 feet in order to avoid foundation heaving and damaging the structure.
Slurry grouting, injected at lower pressures, is then used to stabilize the remaining soil strata.
Sinkholes are the last thing we want as Floridians, but they’re prevalent.
Sinkholes can leave serious damage to our homes and building structures. Compaction grouting can stabilize the ground if structures have been damaged by sinkholes.
Compaction grouting is also used to stabilize the soil and prevent structures from shifting or settling over time, especially in areas prone to sinkhole activity.
The compaction grouting process
We follow a detailed, thorough process when performing compaction grouting for our clients.
We carefully move any bushes or plants in the way, cover windows and walls with plywood and lay hose boards to protect your yard and the property.
We will drill grout injection points by inserting threaded steel casing into the ground, underneath and along the sides of a foundation.
We will drill until we get refusal ensuring the points are properly seated.
Points are spaced 10’ on center. A transit level is set up in the area we are grouting to monitor the building for movement. A high-pressure grout hose from the grout pump is connected to the injection points.
We will pump cement through each injection point using high pressure. This will compact the surrounding soil and then solidify it to provide a solid base.
Part of our process involves monitoring the process at all times. Our team will be on-site with the machines and tools needed to monitor the pressure and safely complete compaction grouting.
We will use special machinery to remove steel casing with as little mess as possible.
Once the grouting is complete, we will cover each injection point and clean up the area where we performed low mobility grouting.
It’s our priority that you feel confident and comfortable with the compaction grouting service we perform on your home. We appreciate any and all feedback.
Nobody does this job more professionally or cleaner than LRE Foundation Repair
Contact us today for a free inspection for compaction grouting and soil stabilization.
We serve Tampa, Orlando, Saint Petersburg, Lakeland, Sarasota, Clearwater, Bradenton, Kissimmee, Daytona Beach, Ocala, Port Saint Lucie, Largo, Melbourne, Spring Hill, Vero Beach, Fort Pierce, New Port Richey and the surrounding Florida area.