If you're dealing with a sunken concrete slab on the walkway to your commercial building, you might be at a loss over how to fix the problem. You may think you need an expensive and complex solution such as busting out the old slab and replacing it with a new one. However, your contractor could have good news. It might be possible to lift the sunken part of the concrete so your sidewalk is level again. Slab jacking works on all kinds of sunken concrete from foundations to driveways. It is especially helpful for sidewalks since you can quickly eliminate a tripping hazard that could get you sued. Here's how the process works.
The Source Of The Problem Is Identified
There are a few reasons why a concrete slab sinks. The problem is in the soil, and something causes the soil to shift. The contractor will assess the source of the problem to make sure slab jacking is the best way to raise the concrete. If the soil wasn't properly compacted initially, or if the soil compacted due to a drought or other environmental problem, then slab jacking might be the perfect solution since it is quick and inexpensive when compared to other types of concrete repair. If the problem is caused by tree roots or poor drainage, then you'll need to address those situations to prevent further problems once your sidewalk is fixed.
The Sidewalk Is Prepped For The Procedure
Slab jacking, or slab lifting, is made possible because the contractor fills in the sunken area under the slab. To do this, a few holes are drilled in suitable locations in the concrete. These holes are used to access the soil under the slab. Once the procedure is finished, the holes are filled in so the surface of the walkway is solid with no gaps or cracks that let rain seep into the concrete to cause other problems.
Concrete Slurry Is Pumped Under The Slab
Slab jacking is sometimes called mud jacking because the material pumped under the slab looks a lot like mud. It has a thick liquid consistency so it can be pumped through the drilled holes. Being a liquid, it spreads out evenly under the concrete. As more and more slurry is pumped in, the void fills and the concrete slab slowly rises. When the slab is level, the contractor stops pumping the slurry and cleans off the slab. As the slurry settles into place, it hardens just like concrete. When finished, the walkway is level and smooth so the tripping hazard is eliminated.
Fixing a walkway with slab jacking is a quick and easy process. It improves the entrance to your business, but most importantly, it removes a tripping hazard that could hurt a visitor or employee. The process works on small sidewalks and larger walkways. Larger walkways may require more holes and more slurry, but they lift just as easily when the sunken soil beneath them is filled.Share