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Case Studies

The IGGA offers case studies on pavement surfacing techniques and preservation/repair methods. Select the application(s), preservation/optimization technique(s) or pavement criteria/issue(s) to browse the case studies, or use the search function.

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CPR: Rebuilt to Last: Bonville Upgrade, Coffs Harbour, New South Wales (NSW) Australia

The Pacific Highway Bonville Upgrade section of the Pacific Highway in New South Wales, Australia, is a small plain concrete pavement (PCP) link between Sydney and Brisbane. The project involved diamond grinding various areas on both the northbound and southbound lanes. The disposal of slurry into existing settlement ponds with a low pH level provided an added benefit, making the waste water more suitable to treatment through a newly commissioned plant. The overall success of this project resulted in the reduced roughness count.

Application(s)

Highway

Technique(s)

Diamond Grinding

Issue(s)

Smoothness

CPR: Rebuilt to Last: Interstate 94, Minnesota

In 2009, the Minnesota Department of Transportation (MnDOT) began concrete rehabilitation on the original 65-mile stretch of Interstate 94 between Minneapolis and St. Cloud. Many concrete pavement preservation treatments were used in the initial repair effort, which took place across approximately 40 miles, including full depth repair and partial depth repair with diamond grinding. The final phase of repair used the method known as "Buried Treasure" - a method referred to as such because non-destructive testing tools allow for the collection of information.

Application(s)

Highway

Technique(s)

Concrete Pavement Preservation and Restoration, Diamond Grinding, Full & Partial Depth Repair

Issue(s)

Sustainability/Environmental

CPR: Rebuilt to Last: Building Safe, Quiet Roads in Duluth, MN

In September 2010, the Minnesota Department of Transportation (MnDOT) and Concrete Paving Association of Minnesota (CPAM), and the International Grooving and Grinding Association (IGGA) hosted a live demonstration of Next Generation Concrete Surface (NGCS) construction on the I-35 project site in Duluth. NGCS was chosen to create a grinding pattern that was quieter.

Application(s)

Highway

Technique(s)

Next Generation Concrete Surface (NGCS)

Issue(s)

Tire/Pavement Noise

CPR: Rebuilt to Last: Interstate-44 in Oklahoma City, OK Utilizes Concrete Pavement Restoration

A physical survey conducted before work began on Interstate-44 in Oklahoma City, OK, revealed severe panel damage and faulted pavement. Due to the high level of traffic and poor road conditions, a fast-track yet long-term solution was needed. Dowel bar retrofit (DBR), diamond grinding, joint sealing, selective panel replacement and base repair were used on the project for all lanes in both directions. The result for taxpayers is a smooth road that is expected to last 15 years.

Application(s)

Highway

Technique(s)

Diamond Grinding, Dowel Bar Retrofit

Issue(s)

Smoothness

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