Assessing the Impact of Geogrid on Pavement Design

Use of geogrids in pavement foundations extends pavement life, reduces required layer thickness, and decreases stresses on weak subgrade soils. But the magnitude of these benefits has not been quantified. The Kentucky Transportation Cabinet (KYTC) also has not formally incorporated considerations related to geogrids into pavement design practices, particularly within the American Association of State Highway and Transportation Officials (AASHTO) Pavement ME Design (PMED) framework. As a result, geogrid appli-ations in KYTC projects lack consistent design guidance and are not systematically factored into design decision making.

Language

• English

Project

• Status: Active
• Funding: $300,000.00
• Contract Numbers:

  KYSPR 27-700

• Sponsor Organizations:

  Kentucky Transportation Cabinet

  200 Mero Street
  Frankfort, KY  United States  40622
• Performing Organizations:

  University of Kentucky, Lexington

  Kentucky Transportation Center College of Engineering, 176 Raymond Building
  Lexington, KY  United States  40506-0281
• Principal Investigators:

  Griffith, Ryan

  Graves, Clark

  Ashurst, Kean

  Cook, Clayton

• Start Date: 20260701
• Expected Completion Date: 20280630
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Decision making; Geogrids; Pavement design; Quantitative metrics
• Identifier Terms: Kentucky Transportation Cabinet
• Geographic Terms: Kentucky
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 02000579
• Record Type: Research project
• Source Agency: University of Kentucky, Lexington
• Contract Numbers: KYSPR 27-700
• Files: RIP, STATEDOT
• Created Date: Aug 26 2026 5:04PM