Is the testing for subgrade stabilization different than the testing needed to quantify the use of a geogrid for a paved road design?
Yes. There are different design methods and inputs for each design method. The allowable amount of permanent deformation also likely differs for both of these applications. They require different testing, and have significantly different failure criteria. Specifics on what to look for when comparing testing for subgrade stabilization and paved road design can be found in the FAQ below.