Degree Type

Dissertation

Date of Award

2020

Degree Name

Doctor of Philosophy

Department

Civil, Construction, and Environmental Engineering

Major

Civil Engineering (Geotechnical Engineering)

First Advisor

Jeramy C. Ashlock

Abstract

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.

DOI

https://doi.org/10.31274/etd-20200902-136

Copyright Owner

Sajjad Satvati

Language

en

File Format

application/pdf

File Size

142 pages

Available for download on Sunday, February 28, 2021

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