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SUBSURFACE VOIDS

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If you have subsurface voids, you need to perform:

 

Slab Stabilization

 

Subsurface restoration consists of pressure insertion of flowable material, usually a cementitious grout or urethane material, into the voids. The nondestructive processes provide both short- and long-term reductions in pavement deflection and are most effective on pavements with minimal structural damage.


The best time to perform subsurface restoration is soon after loss of support becomes evident. In addition to visual inspection, several tools are available for detecting voids under pavement, including deflection measurement, ground
penetrating radar and epoxy/core tests. Subsurface restoration should be used in conjunction with other concrete pavement preservation (CPP) techniques.

Resources

Minnesota State Aid Concrete Pavement Rehabilitation Best Practices Manual

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Bridge, City/Municipal, Highway

Concrete Pavement Preservation and Restoration

Structural/Material Issues

Slab Stabilization

Missouri DOT Tech Brief

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Airport/Airfield, City/Municipal, Highway, Industrial

Slab Stabilization

Structural/Material Issues

Concrete Repair Best Practices

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.

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City/Municipal, Highway

Concrete Pavement Preservation and Restoration, Diamond Grinding, Dowel Bar Retrofit, Full & Partial Depth Repair, Joint and Crack Resealing

Structural/Material Issues

Progressive Concrete Pavement Preservation Strategy Improves City Streets in Minneapolis

A Progressive Concrete Pavement Preservation Strategy Improves City Streets in Minneapolis

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City/Municipal

Cross/Slot Stitching, Diamond Grinding, Dowel Bar Retrofit, Full & Partial Depth Repair, Joint and Crack Resealing, Slab Stabilization

Friction/Safety, Sustainability/Environmental

Quick Facts: Pavement Base and Subgrade Repair

Pavement base and subgrade repair reduce pavement deflection by filling subsurface voids

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Airport/Airfield, City/Municipal, Highway, Industrial, Race Track

Slab Stabilization

Structural/Material Issues

CPP for City Streets: Smooth Pavements Last Longer!

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.

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City/Municipal

Concrete Pavement Preservation and Restoration

Smoothness, Structural/Material Issues, Sustainability/Environmental

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