This manual has been developed, with permission, from information published by the Minnesota Department of Transportation (MnDOT) and the American Concrete Pavement Association’s Concrete Pavement Repair Manual, which was printed in May 2003. It includes joint repair, partial-depth repair (PDR), full-depth repair (FDR) and dowel bar retrofit (DBR).

This Tech Brief summarizes a case study on slab stabilization in Missouri. Slab stabilization (also called undersealing and sub sealing) is the pressure insertion of a highly flowable material beneath the slab or stabilized base to restore the support beneath transverse and longitudinal joints that has been eroded away. Slab stabilization technology has improved over the years through better procedures and materials to provide a restoration of support of slabs that have experienced pumping and erosion leading to transverse joint and crack faulting, cracking, and roughness.

Concrete pavement restoration (CPR) techniques have gained greater national significance as DOT agencies attempt to further extend infrastructure service lives prior to required major rehabilitation or reconstruction. This report consolidates best practice case studies for six CPR techniques: cross stitching, dowel bar retrofit, diamond grinding, full depth repair, partial depth repair and slab stabilization.

Concrete Pavement Preservation (CPP) has long been used on deteriorated highways, but it also offers an alternative to asphalt overlays when rehabilitating city streets constructed of concrete. Techniques include: Slab stabilization, Full-depth repair (FDR), Partial-depth repair (PDR), Dowel bar retrofit (DBR), Cross-stitching longitudinal cracks or joints, Conventional diamond grinding (CDG) and Joint and crack resealing.

Subgrade repair comes in several forms, including slab stabilization (aka, undersealing and sub sealing), slab jacking, and medium and deep injection grouting. Subsurface restoration maintains the structural integrity of the slab and reduces pumping, faulting, and cracking.

Concrete pavements can achieve maximum longevity using strategic repair techniques. Today's urban streets have, in many cases, encountered 40 to 60 years of wear and tear. Concrete Pavement Preservation (CPP) is a series of engineered techniques to rehabilitate concrete pavement. It is a viable alternative to costly asphalt overlays. Basic CPP techniques include: slab stabilization, full depth repair, partial depth repair, dowel bar retrofit, cross-stitching longitudinal cracks or joints, diamond grinding, joint resealing and crack resealing.