A variety of factors can affect a snowplow blade’s long-term performance, making it difficult for an agency to determine which blades are the most cost-effective overall. By developing a field test protocol and cost-benefit analysis methodology, the new research will make it easier for Clear Roads agencies to evaluate and compare blades in the future using the same standard procedures used in this project.
Continue reading New Clear Roads Research: Evaluating high-performance plow bladesCategory Archives: Maintenance Operations
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.
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Talking about Winter Road Maintenance
AASHTO’s SICOP Talks Winter Ops podcast tackles a variety of topics about winter road maintenance in four recent podcasts. Listen to conversations with experts and practitioners who have real-life experience maintaining roads under snow and ice.
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Research, Updated Tools Help MnDOT Encourage Landowners to Join Snow Fence Program
This article was originally posted on Catalyst, November 2022.
Snow fences are a useful tool for controlling snow and ice on Minnesota’s roads. However, installing them relies on the cooperation of landowners. An ongoing collaboration between U of M researchers and the Minnesota Department of Transportation (MnDOT) aims to develop outreach tools that can be used to attract more landowners to the MnDOT snow fence program.
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Expanding Alternative Snow Control Through Landowner Engagement
Some rural landowners maintain snow fences to prevent blowing snow from reaching highways, decreasing the resources MnDOT spends on winter maintenance. A recent project provided new information and updated tools to encourage more landowners to adopt this alternative snow control method.
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Tractor, Meet Snowplow: Snow Removal Innovation
Over the years, dozers have been the desired tool for pushing snow drifts back along highways. While dozers work well, they are limited by the drivability between drift locations.
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Innovative Additions Could Help Asphalt Pavements Sense Damage—and Repair Themselves
This article was originally published in Catalyst, January 2022.
University researchers are investigating ways to extend the life of asphalt pavements and generate cost savings by adding innovative materials to asphalt mixes. In a recent study, they found that improving asphalt mixes with graphite nanoplatelets and taconite concentrates offers new possibilities for enhancing damage-detection techniques and restoring subsurface cracking using microwave energy.
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Innovative Materials and Technologies for Sustainable Pavement Infrastructure
In search of enhanced pavement damage detection practices, researchers investigated two innovative additives to asphalt binders: graphite nanoplatelets and taconite concentrates. They also examined the ability of microwave energy to restore subsurface cracking.
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Investigating Pavement Segments With Long-Term Poor Ratings
Researchers investigated pavement segments within MnDOT’s pavement management system that had received a poor ride quality level rating for more than five years. Their investigations showed that for most segments, the true pavement conditions differed from listed ratings due to the pavement segments’ unique characteristics.
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Evaluating Improved Specifications for Retightening Anchor Rods on Support Poles
In this follow-up study, researchers checked the effectiveness of revised specifications for tightening anchor rods on sign and signal support poles. The revised specifications will ensure correct tightening procedures, which will result in better installations and maintenance.
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Crossroads 