Tag Archives: best practices

Putting Research Into Practice: Fog Sealing Chip Sealed Roads Can Improve Performance

Applying a protective surface—or chip seal—to existing asphalt on relatively low-traffic roads is a pavement preservation method used by many transportation agencies. Yet despite its popularity, chip seals can cause various issues. Some agencies have found that applying a fog seal following a chip seal is a cost-effective strategy for improving asphalt performance and public satisfaction.

Continue reading Putting Research Into Practice: Fog Sealing Chip Sealed Roads Can Improve Performance

Guidance for Working With Potentially Acid-Generating Materials

A new resource is available to help agencies greatly reduce the risk of disturbing potentially acid-generating (PAG) rock in places like northern Minnesota when conducting road projects. When exposed to air and water, PAG minerals can generate drainage that is hazardous to the environment. A MnDOT-sponsored research team developed a best practices manual that provides comprehensive steps to identify, mitigate and monitor PAG material during highway construction.  

Continue reading Guidance for Working With Potentially Acid-Generating Materials