Charles JahrenPhone: 515/ 294-3829 Email: cjahren@iastate.edu Completed Projects TitleYearReport #Optimal RAP Content for Minnesota Gravel Roads20192019-11 Evaluation of Stabilized Full Depth Reclamation (SFDR)20182018-33 Alternate Design Methods to Renew Lightly Traveled Paved Roads20162016-14 Lightly Surfaced Roads: Stabilized Aggregate Applications20152015-06 Aggregate Road Surface Rejuvenation20152015-04 Economics of Upgrading an Aggregate Road20052005-09