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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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Asphalt Pavement Preservation & Diamond Grinding

When the asphalt surface of Missouri U.S. 412 required pavement preservation to repair cracking and increasing roughness, MoDOT scoped diamond grinding as the primary preservation treatment.

Application(s)

Highway

Technique(s)

Diamond Grinding

Issue(s)

Friction/Safety, Smoothness

Concrete Pavement Preservation (CPP) Built To Last

In 2020, Oklahoma's concrete pavements were due to begin a maintenance cycle, and by the end of that year, concrete pavement preservation (CPP) consisting of selected panel replacements, dowel bar retrofit (DBR) and diamond grinding had been completed on portions of the Cimarron, Bailey and Indian Nation Turnpikes. CPP allows for seven times the length of roadway repaired for every dollar spent.

Application(s)

Highway

Technique(s)

Concrete Pavement Preservation and Restoration, Diamond Grinding, Dowel Bar Retrofit

Issue(s)

Structural/Material Issues

Concrete Pavement Preservation (CPP) Slashed Repair Costs

The city of Baytown, Texas lowered the expected repair costs by 80% with concrete pavement preservation (CPP). CCP techniques are less invasive, low-cost alternatives to full concrete replacements. The city replaced approximately 20 percent of the road surface with CCP work including full-depth panel replacement, dowel bar retrofit, cross stitching, replacement and resetting of manholes, diamond grinding, and crack repair and sealing.

Application(s)

City/Municipal, Highway, Industrial

Technique(s)

Concrete Pavement Preservation and Restoration

Issue(s)

Structural/Material Issues

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.

Application(s)

Highway

Technique(s)

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

Issue(s)

Structural/Material Issues

CPR: Built to Last: Provincial Trunk Highway #9, Selkirk, Manitoba, Canada

Full depth repair (FDR), partial depth repair (PDR) and diamond grinding were used to repair Provincial Trunk Highway 9 in Selkirk, Manitoba, Canada. The 32-year-old concrete pavement required rehabilitation on a two-mile section, due to transverse joint deterioration and uneven wear of the existing seal coat causing a rough ride.

Application(s)

Highway

Technique(s)

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

Issue(s)

Smoothness

CPR: Rebuilt to Last: South Eleventh Street Profiling, Oskaloosa, IA

In 1993, the city of Oskaloosa, Iowa, set out to conduct its first extensive surface profiling/diamond grinding project on South Eleventh Street. With minor maintenance patching and contraction joint sealing performed in 1986 and in 1990, this one-mile-long stretch of city street required no repairs. This project shows the longevity that can be achieved with diamond grinding.

Application(s)

City/Municipal

Technique(s)

Diamond Grinding

Issue(s)

Smoothness

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