Concrete lifting, sometimes called Mudjacking (or Mud Jacking)? concrete raising, concrete lifting, slabjacking, or concrete stabilization is a straightforward, cost effective and efficient concrete repair process which involves injecting concrete material below sunken concrete slabs. Level Best Concrete Lifting injects a concrete slurry to fill the void beneath the slab, pressurizing, or hydraulically lifting, the slab up to a level position. The process takes just hours to complete so your raised slab can be put back into use just hours after we raise it.