Benefits of grinding and grooving new and existing asphalt pavements

Diamond grinding on asphalt pavements has proven to be an effective solution for addressing

challenges such as surface roughness, reduced friction and pavement deterioration. The case study,

“Asphalt Diamond Grinding,” highlights how innovative approaches have been applied in multiple

states to improve road conditions while optimizing costs and resources. From addressing single-lift

smoothness in South Carolina to mitigating safety concerns in Ohio, diamond grinding has emerged as

a reliable method for enhancing both the performance and longevity of asphalt infrastructure.

To tackle various pavement concerns, state transportation agencies implemented targeted

diamond grinding and grooving strategies. For example, South Carolina used diamond grinding

instead of a final overlay on SC 544, resulting in a smooth and friction optimized surface. Similarly,

Missouri applied grinding to remove ruts and restore ride quality on U.S. 412, while Ohio adopted a combination of grinding and grooving to improve friction and reduce accidents in high-risk areas. These actions not only demonstrated technical efficiency but also supported cost-effective construction schedules and minimal traffic disruptions.

The outcomes underscore the value of diamond grinding as a preservation tool. SC 544 recorded a 56% reduction on average in roughness, while Missouri extended the asphalt lifespan comparably to overlays at reduced cost. Ohio's efforts significantly enhanced skid resistance and reduced crash rates. Collectively, these results illustrate the technique's ability to meet critical safety, sustainability and cost

requirements. For a comprehensive understanding of how diamond grinding can optimize your asphalt paving projects, explore the full case study here.