Ground heaving from freeze and thaws, settling of the soil and ground under the surface, vibrations, water erosion, improper compaction of the base before pouring the concrete.
More costly to replace, time consuming and messy. Disrupts landscaping causing added expenses.
Lifting concrete using polyurethane spray foam injection is environmentally friendly. Less disruptive and time consuming. You can use your repaired area as soon as the product has cured. Polyurethane spray foam is injection in a liquid form allowing further travel to fill voids that are not visible. Fewer holes need to be drilled and the small size is more visually appealing.