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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: South Dakota 16A near Mount Rushmore National Memorial

Maintaining Iron Mountain Road, South Dakota's historic route 16A using modern equipment and techniques was a challenge confronted by repair crews who undertook its resurfacing in early 2014. SDDOT specifications require diamond grinding of bridge decks in preparation for the placement of epoxy chip seal overlays. Epoxy resin was selected for repair of four pigtail bridges.

Application(s)

Bridge, City/Municipal

Technique(s)

Diamond Grinding

Issue(s)

Friction/Safety, Smoothness

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.

Application(s)

Highway

Technique(s)

Diamond Grinding, Dowel Bar Retrofit, Joint and Crack Resealing

Issue(s)

Smoothness

CPR: Rebuilt to last: US Route 33, Appalachian Corridor H, Barbour, Upshur and Randolph Counties, WV

A 21-year-old 4.20-mile section of U.S. Route 33 in Upshur County, WV, exhibited distressed areas in need of repair. Full depth repair, partial depth repair, and diamond grinding techniques were chosen for the project. Compared to more traditional methods, the WVDOH feels that the application of these techniques is an effective combination of treatments to treat a significant portion of this corridor and provide long-term performance at a relatively low cost.

Application(s)

Highway

Technique(s)

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

Issue(s)

Structural/Material Issues

CPR: Rebuilt to Last: Roller compacted concrete grinding in Aiken, SC

The South Carolina Department of Transportation (SCDOT) identified a 27,500-square-yard portion of Richland Avenue/US-78 in Aiken, SC, needed repair. Roller Compacted Concrete (RCC) was selected because it could be placed in one lift. Diamond grinding was then used to improve smoothness, add longevity and provide surface texture.

Application(s)

City/Municipal

Technique(s)

Diamond Grinding

Issue(s)

Smoothness

CPR: Rebuilt to Last: Highway 21 repairs Newark, NJ

When the New Jersey Department of Transportation (NJDOT) set out to repair Highway 21 on the north side of Newark, they sought a cost-effective solution that would result in a safe, smooth ride. Recognizing that the existing pavement was structurally sound, NJDOT removed the asphalt overlay and performed diamond grinding on the underlying concrete pavement. The techniques used to complete the project included asphalt milling, cat basin reconstruction, slab stabilization, pre-cast panel replacement, partial depth repair, joint resealing and diamond grinding for the final ride and surface texture.

Application(s)

Highway

Technique(s)

Concrete Pavement Preservation and Restoration, Diamond Grinding, Full & Partial Depth Repair, Joint and Crack Resealing, Slab Stabilization

Issue(s)

Structural/Material Issues

CPR: Rebuilt to Last: California State Route 85 Tested for Quietest Pavement: Diamond Grinding was the Solution

Route 85 near San Jose, CA, has a high level of traffic. As such, noise is a major concern for local residents. In response to these issues and complaints from the local citizens, a .88 mile diamond grinding test section was constructed between DeAnza Blvd. and Saratoga Ave. The tire pavement noise evaluations found that the diamond ground surface was almost 2.5 dBA lower in overall noise level and exhibited significantly less variability.

Application(s)

Highway

Technique(s)

Diamond Grinding

Issue(s)

Tire/Pavement Noise

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