Correction

Concrete Leveling, often referred to as “slabjacking” or “mudjacking” can both raise the old cracked slab back to its original position and create a new foundation of cement mortar or sand mix (called a slurry) by injecting the slurry under the slab through a hole, under pressure. The viscosity of the slurry will keep it from flowing back through the hole until it sets.

 

Accounts of raising large concrete slabs through the use of hydraulic pressure go back almost a century. Mudjacking or slabjacking has been in common use since the mid 1960s. Generally a portable pump is carried to the location of the block to be raised. A hole of an inch and a half in diameter is drilled into the block. Our slurry is made up of a combination of topsoil, sand, and/or limestone.  It is then injected under the sunken concrete block, causing it to rise.

Once the desired leveling occurs, the holes are patched with a concrete blend for both strength and visual aesthetically pleasing results.  Stamped concrete or tile overlays can also be patched using a method to minimize visual disturbances.

Once the holes are patched, they need only a few hours to dry. However, the raised slab can be used immediately. The patches, when dry, will match the original coloring of the slab and, over time, will begin to match the affected concrete, making it nearly impossible to notice them.