Minnesota’s winters have been warming significantly faster than summers over the last several decades. In fact, the state’s winters are among the fastest warming in the U.S. This warming trend is likely increasing the time in which winter temperatures are near freezing, which could increase the number of freeze-thaw events. An increase in freeze-thaw events could have detrimental effects on Minnesota’s pavement systems.Continue reading Have Minnesota’s Warmer Winters Increased the Number of Freeze-Thaw Cycles?
A recent Local Road Research Board (LRRB) study confirmed that increased freeze-thaw activity during Minnesota winters leads to delamination of seal coats from underlying pavements. Researchers identified optimal seal coat mix combinations and site conditions that may ensure effective seal coating of asphalt pavements in cities and counties around Minnesota.Continue reading Investigating Asphalt Pavement Stripping Under Seal Coats
Minnesota is experiencing warmer winters and an increase in freeze-thaw events may negatively impact pavement systems. However, the impacts of these recent climate changes on freeze-thaw cycles have not been well studied.Continue reading New Project: Have Minnesota’s Warmer Winters Increased the Number of Freeze Thaw Cycles?
Researchers have refined an innovative, quick pothole repair method for both concrete and asphalt pavements without using asphalt or cement materials. Based on taconite, a plentiful Minnesota material, the repair mixture can be applied fairly quickly and shows promise as a cost-competitive, long-term solution for potholes.Continue reading Taconite-Based Mixture Shows Further Promise for Repairing Potholes