MnDOT uses geosynthetic materials to stabilize or reinforce road pavements. Various types of geosynthetics help maintain separation between pavement layers, improve drainage and prevent erosion.
The most commonly used materials for pavement applications are geotextiles and geogrids. In addition to facilitating moisture reduction, geotextile barriers help confine and stabilize subgrade and base materials. Geogrids reinforce the soil base under the pavement and provide improved load bearing capacity. Eco Bag
The benefits of geotextiles and geogrids can be optimized when soil type and pavement structure, traffic loads and other factors are considered. Understanding the evolution of best practices for using geosynthetic materials in road construction will support improved performance and extended design life of Minnesota’s pavements.
“The research will help MnDOT modernize how we use geotextile and geogrid materials to enhance our pavement design and construction approaches,” said Terry Beaudry, grading and base engineer, MnDOT Office of Materials & Road Research. “Updated guidance and decision tools for using geosynthetics will make the most of the benefits they provide for our pavements.”
In a new project, researchers will analyze and quantify the pavement benefits of geosynthetic materials based on their functions. A best practices design guide will support road designers in choosing the appropriate geotextiles and geogrids for different road and traffic conditions to better predict pavement outcomes and extend pavement life.
Details of the research study work plan and timeline are subject to change.
To receive email updates about this project, visit MnDOT’s Office of Research & Innovation to subscribe.
Enter your email address to follow this blog and receive notifications of new posts by email.
Geosynthetic Material Crossroads is a collaborative effort among MnDOT’s Office of Research & Innovation, the University of Minnesota’s Center for Transportation Studies and the Minnesota Local Road Research Board. This jointly produced blog is devoted to highlighting the latest news and events in transportation research and innovation in Minnesota.