Date of Award
Doctor of Philosophy
Civil, Construction, and Environmental Engineering
Civil Engineering (Geotechnical Engineering)
Jeramy C. Ashlock
Annual maintenance of granular roadways in cold regions costs millions of dollars to the local counties and requires a large portion of county budgets for purchase of new aggregates, equipment use and labor cost. Maintenance of granular roadways commonly includes blading the surface materials and spreading of new aggregates on existing surface aggregates. Freezing and thawing, high traffic loads, the presence of frost susceptible soils, and the use of low-abrasion resistance aggregates reduce the serviceability of unbound surface courses by decreasing the stiffness, strength and ride quality, while increasing aggregate and thickness loss, fines content, and dust emissions. However, utilizing high-abrasion resistant surface aggregates, even if associated with higher material and hauling costs, could be cost-effective by reducing the rate of deterioration of these roadways and consequently minimizing the required number of maintenance cycles.
Satvati, Sajjad, "Performance evaluation and benefit cost analysis of unpaved roads" (2020). Graduate Theses and Dissertations. 18217.
Available for download on Sunday, February 28, 2021