Severely Cracked Slabs
If you have severely cracked slabs, you need to perform:
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Full-Depth Repairs
Full-depth repair is the removal and replacement of full slab thickness sections of deteriorated pavement. Length can vary based on conditions present. A common minimum patch size is four to six feet long and a full lane width wide. This type of repair can be completed on both jointed and continuously reinforced concrete pavement. On jointed pavement, the transverse construction joints at the patch ends are typically doweled and/or tied to restore load transfer across the joints. Additionally, on longer patch sections, dowel bar assemblies are placed at intervals to coincide with the existing transverse joint pattern present. On continuously reinforced concrete, the reinforcing steel pattern of the existing pavement is removed and replaced with new steel within the repair section. The transverse repair boundaries are first sawed and jackhammered to expose approximately two feet (typical) of the existing steel to facilitate the tying of the new reinforcement bars to the steel pattern in the existing pavement.
Resources
CPR: Rebuilt to Last: Pavement rehabilitation in Jamestown, MD
U.S. Highway 281 in Jamestown, North Dakota, underwent concrete pavement rehabilitation methods to extend pavement life and minimize disruptions. Full and partial depth repair, joint resealing and diamond grinding were implemented to restore structural integrity and performance. These measures ensured cost savings, extended pavement life by 15 to 20 years, and minimized disruptions to local traffic and businesses. The project, completed two months ahead of schedule, demonstrated the benefits of targeted pavement preservation techniques.
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City/Municipal, Highway
Concrete Pavement Preservation and Restoration, Diamond Grinding, Dowel Bar Retrofit
Smoothness, Structural/Material Issues
CPR: Rebuilt to Last: White Bear Lake Highway 61 CPR repairs last 22 years
US Highway 61 travels through White Bear Lake, MN. In 1987, it required full depth repair and partial depth repair, diamond grinding, re-saw and seal with silicone in the transverse joints and hot pour sealant in the longitudinal joints. The Concrete Pavement Restoration (CPR) methods performed more than two decades ago are still in good condition, lasting longer than originally predicted.
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Highway
Diamond Grinding, Full & Partial Depth Repair, Joint and Crack Resealing
Structural/Material Issues
CPR: Rebuilt to Last: John Kilpatrick Turnpike, Oklahoma City, OK, Interstate 40 near Yukon to I-35
In 2005, the Oklahoma Turnpike Authority (OTA) identified the need for significant road repairs on the John Kilpatrick Turnpike. Full depth repair, dowel bar retrofit (DBR), diamond grinding and joint resealing methods of repair were selected to address the deterioration. It is predicted that it will be 15 to 20 years before any additional major work will need to be completed.
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Highway
Diamond Grinding, Dowel Bar Retrofit, Joint and Crack Resealing
Smoothness
CPP: Rebuilt to Last: Diamond Grinding and Patching Restore U.S. 67 in Arkansas
Concrete pavements last 40+ years; treatment with CPP restores rideability. A 120-mile-long stretch of U.S. 67 connects North Little Rock, AK to Walnut Ridge, AK. Concrete pavement preservation (CPP) was deemed appropriate for rehabilitating the highway using diamond grinding. After patching and grinding, there was about an 80% improvement in smoothness.
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Highway
Concrete Pavement Preservation and Restoration, Diamond Grinding, Full & Partial Depth Repair
Structural/Material Issues
CPR: Rebuilt to Last: A progressive concrete pavement preservation strategy improves city streets in Minneapolis
City streets in Minneapolis benefited from the implementation of concrete pavement preservation (CPP) techniques. The strategy focused on rehabilitating structurally sound residential streets using methods such as diamond grinding, dowel bar retrofit (DBR), full depth repair (FDR), partial depth repair (PDR), cross/slot stitching, joint resealing, and crack resealing. This approach was chosen for its sustainability and cost-effectiveness, enhancing road safety and extending pavement lifespan by up to 25 years.
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City/Municipal
Concrete Pavement Preservation and Restoration
Sustainability/Environmental
CPR: Rebuilt to Last: Infrastructure rehabilitation in Winnipeg, Manitoba, Canada
Winnipeg, Manitoba, saw significant improvements in road smoothness and durability through comprehensive Concrete Pavement Rehabilitation (CPR) initiatives. The project encompassed several techniques, including diamond grinding, dowel bar retrofit (DBR), partial depth repair (PDR), full depth repair (FDR), and transverse joint sealing. These methods were chosen over an asphalt overlay due to their cost-effectiveness, resulting in significant improvements in road smoothness and durability.
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Highway
Concrete Pavement Preservation and Restoration, Diamond Grinding, Dowel Bar Retrofit, Full & Partial Depth Repair, Joint and Crack Resealing
Structural/Material Issues