Full-depth patching entails removing and replacing at least a portion of a slab to the bottom of the concrete, in order to restore areas of deterioration. Full-depth patches improve pavement rideability and structural integrity and extend pavement service life.
The most common problem that requires full-depth patching is joint deterioration. This includes any cracking, breaking, or spalling of slab edges on either side of a transverse or longitudinal joint. Often, this deterioration takes place on the bottom of the concrete slab and may not be visible from the surface.