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Taconite as a Lower Cost Alternative High Friction Surface Treatment to Calcined Bauxite for Low-Volume Roads in Minnesota

Status:  Active
Project Start Date:  07/29/2020

Summary:

Calcined bauxite, the recommended product for High Friction Surface Treatments (HFST), is imported, expensive and energy-intensive to produce. A less expensive, Minnesota mining byproduct, Mesabi (taconite) friction aggregate, will be evaluated to determine if it could provide adequate or comparable field skid resistance performance, and either partially or fully replace calcined bauxite in HFST applications.

Final Deliverables:

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