CONCRETE SLAB LIFTING
UPPER: This broken sidewalk was a trip hazard that resulted in a broken leg. After lifting and leveling the settled slab, the walk is both safer and more attractive.
LOWER: This street settled 3 inches along a joint at an intersection. After lifting the street, drivers no longer felt the disruptive bump at the end of their road.
Concrete lifting, otherwise known as mudjacking or slabjacking, is a proven process that has been around since the 1930's.
Since all concrete is subject to cracking and settling, lifting concrete has become a well-known alternative to replacement. The process begins by strategically drilling into the concrete slab, injecting a slurry mixture that contains portland cement, and then patching the hole using concrete.
This injected slurry mixture does three things. First, it spreads out to fill all voids under the concrete, second it compacts the ground under the slab, and third it lifts the concrete to its previous, original height.
Holes drilled are usually 2 to 5 feet apart and are approximately 1¼” inches in diameter. The portland cement is added to the injected mixture to ensure the material resists erosion and rodents.
The concrete used to patch your holes is carefully mixed and applied to match the color and texture of your concrete as close as possible. A slight difference in color is typical, however.
Some of the benefits of concrete lifting verses replacement;
Most jobs are completed in one day and can be used while the work is being performed.
Typically there is no disturbance to the surrounding yard and landscaping.
The color and texture of your concrete will remain the same.
Lifting your concrete slab helps to compact the soil under your slab and prevent future settling.
The cost of lifting your concrete is usually much lower than replacing, especially for larger slabs.
Most types of concrete can be lifted...
Front Porch Rear Patio Front steps 
This concrete driveway is quite broken. If your concrete is broken into small pieces such as this, then your concrete is NOT a canidate for lifting. Instead, your concrete will need to be replaced.