Effectiveness of Geotextiles/Geogrids in Roadway Construction; Determine a Granular Equivalent (GE) Factor Status: CompleteReport Date: 12/14/2021 Summary: Geogrid, a synthetic material with a triangular or square pattern, can be inserted between the layers of asphalt pavement during construction to increase the strength and durability of the finished road. After rigorously testing geogrid materials, researchers provided objective data on geogrids’ short- and long-term performance and demonstrated that the material’s upfront cost may be worthwhile given the benefits it provides over the life of the pavement. Final Deliverables: Appendix #2021-26A Report #2021-26 Technical Summary Related Materials: Quantifying the Effect of Geogrids in Asphalt Pavement Foundation Layers - (Blog Post) Related Research: