Preserving Old Pavements

ACPA works with our clients to select the best preservation solution for the needs of the project
Diamond Grinding
American Concrete Pavement Assn.
Conventional diamond grinding is a surface planing procedure that removes bumps and smooths concrete pavement surface distresses or deficiencies.
Learn more

Diamond Grinding

Restore/Improve Ride Quality

Diamond grinding helps restore a uniform surface and improve pavement ride quality.

Produce Quieter Ride

The corduroy texture from diamond grinding produces lower tire-pavement noise levels than most other textures.

Improve Surface Friction

Diamond grinding is primarily conducted to restore or improve ride quality, but it also improves skid resistance.

Concrete Grooving
American Concrete Pavement Assn.
Grooving a pavement’s surface is an effective method to increase traction, reduce hydroplaning and minimize splash and spray while providing a more effective braking surface.
Learn more

Concrete Grooving

Improves Safety

Grooving helps channel water under vehicle tires to reduce hydroplaning, providing a safer driving environment in wet weather.

Address High-Accident Locations

Grooving allows agencies to quickly address locations they determine are areas with a higher number of skidding incidents.

Grooving is Economical

Grooving is inexpensive and costs significantly less than asphalt overlays.

Next Generation Concrete Surfaces
American Concrete Pavement Assn.
The Next Generation Concrete Surface (NGCS) is a precisely controlled combination ground and grooved texture that provides the industry’s most quiet concrete road surface.
Learn more

Next Generation Concrete Surface (NGCS)

Smoother Ride

The innovative texture provides for a smoother, more uniform ride.

Increased Safety

NGCS provides increased macro-texture, creating a safer road in wet weather conditions.

Decreased Noise

Tests have shown a decrease in tire/pavement noise by 75%.

Full and Partial Depth Patching
American Concrete Pavement Assn.
These repairs are defined as the removal of areas of deteriorated concrete that are then replaced with a suitable repair material. These repairs restore the overall integrity of the pavement and improve its ride quality.
Learn more

Full and Partial Depth Patching

Economical

Patching targets only the areas in need of repair.

Traffic Friendly

New fast setting proprietary products are now available that gain full strength in a matter of hours.

Selection and Timing = Success

The condition of the pavement being repaired is an important consideration to get the best from full- or partial-depth patches.

Dowel Bar Retrofit
American Concrete Pavement Assn.
Dowel bar retrofit (DBR) is the installation of dowel bars into pavements using minimally-invasive techniques to effectively transfer wheel loads across slabs and reduce deflections.
Learn more

Dowel Bar Retrofit (DBR)

DBR Improves Performance

Restoration of load transfer by installing dowel bars enhances pavement performance.

DBR Strengthens Transverse Joints/Cracks

Introducing new dowels to an existing pavement at transverse joints or cracks strengthens the pavement structure.

Proper Application is Critical

DBR is not for every preservation project. It is important to run through a DBR checklist to ensure desired performance can be achieved.

Cross Stitching
American Concrete Pavement Assn.
Cross stitching and slot stitching are minimally invasive preservation methods designed to strengthen longitudinal cracks or joints.
Learn more

Cross and Slot Stitching

Solution for Shoulder Separation

Cross stitching is used for tying road lanes or shoulders that are separating and causing a maintenance problem.

Slot Stitching Similar to DBR

Slot stitching is a preservation repair technique for longitudinal cracks and joints that grew out of the DBR technique.

Keeping Joints/Cracks Tight

Cross-stitching strengthens longitudinal joints/cracks in slabs to prevent slab migration and to maintain aggregate interlock.

Joint Resealing
American Concrete Pavement Assn.
Sealing or filling transverse and longitudinal joints in concrete pavements is an important consideration for long-term pavement performance.
Learn more

Joint Resealing

Maintains Structural Integrity

Well maintained joint seals can minimize water intrusion and subgrade softening.

Preserves Ride Quality

Potential for Pavement blowups and joint spalling are minimized.

Reduction of Noise Levels

Properly sealed joints minimize noise created by wheel-slap and air pumping.

Slab Stabilization
American Concrete Pavement Assn.
Slab stabilization also called undersealing, subsealing or pavement grouting) injects flowable material into existing voids beneath a concrete slab.
Learn more

Slab Stabilization

Restores Structural Integrity

The material restores support to the pavement and mitigates further water infiltration damage.

Preserves Ride Quality

Provides both short- and long-term reductions in pavement deflection.

Economical

Stabilizing a slab is less expensive than full depth repair.

In-Place Recycled Base (FDR)
American Concrete Pavement Assn.
Full-depth reclamation (FDR) is a cement-based solution to strengthen existing asphalt pavements. FDR involves mixing portland cement into the existing asphalt pavement materials during a continuous, in-place grinding process.
Learn more

In Place Recycled Base (FDR)

Cement Strengthens Base

FDR with cement increases the structural capacity of the new roadway by providing a stronger and more consistent base.

FDR Promotes Sustainability

Recycling in place lowers the carbon footprint, and reduces the need for additional resources.

FDR Reduces Deflections

FDR outperforms an unstabilized granular base, the stiffer base reduces deflections due to traffic loads, resulting in lower strains on the pavement surface.