“This testing proves what this industry has known for a long time. A 20- to 25-year-old concrete pavement can be made smoother for less money using diamond grinding when compared to an asphalt overlay and avoids the never-ending cycle of milling and overlay brought on by covering a structurally sound section of concrete pavement,” said Eilken.

This article was contributed by John Roberts, executive director of the International Grooving and Grinding Association (IGGA).