New Project: Evaluation of Gravel Stabilizer Used on Gravel Roads and Shoulders

Approximately 50% of roads in Minnesota are gravel. The performance and long-term sustainability of such roads depend on the quality of the surface layer. Unbound large particles can form an unstable road surface that becomes rough, developing potholes and corrugations as this material is scattered by vehicles or washed away by rain. As a result, more frequent maintenance and reconstruction is required, which becomes very expensive for Minnesota counties.

"Gravel stabilizers have been shown to reduce the need for grading, surface aggregates, and dust control products. The intent of this research project is to quantify these benefits in relationship to the costs associated with placing gravel stabilizers," said Terrence Beaudry, MnDOT pavement foundation engineer.

Details of the research study work plan and timeline are subject to change.

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