Aggregate Road Surface Rejuvenation Charles Jahren, Principal Investigator Department of Civil, Construction, and Environmental Engineering Construction Management and Technology, Institute for Transportation Iowa State University April 2015 Research Project Final Report 2015-04 To request this document in an alternative format call 651-366-4718 or 1-800-657-3774 (Greater Minnesota) or email your request to
[email protected]. Please request at least one week in advance. Technical Report Documentation Page 1. Report No. 2. 3. Recipients Accession No. MN/RC 2015-04 4. Title and Subtitle 5. Report Date Aggregate Road Surface Rejuvenation April 2015 6. 7. Author(s) 8. Performing Organization Report No. Charles Jahren and Ziliang Zhang 9. Performing Organization Name and Address 10. Project/Task/Work Unit No. Institute for Transportation Iowa State University 11. Contract (C) or Grant (G) No. 2711 S. Loop Drive, Suite 4700 (c) 99004 (wo) 10 Ames, Iowa 50011-8664 12. Sponsoring Organization Name and Address 13. Type of Report and Period Covered Minnesota Department of Transportation Final Report Research Services & Library 14. Sponsoring Agency Code 395 John Ireland Boulevard, MS 330 St. Paul, Minnesota 55155-1899 15. Supplementary Notes http://www.lrrb.org/pdf/201504.pdf 16. Abstract (Limit: 250 words) Aggregate surfaced roads become coarser and coarser after a few years of service due to an inherent problem—dust emission. Fines in the surfacing material are kicked up by traffic and blown away by the wind as fugitive dust. One of the alternative rejuvenation methods is to replenish the missing fines to restore the gradation and plasticity of the in situ material.