Doctor of Philosophy (Ph.D.)
Degree Granting Department
Civil and Environmental Engineering
Qing Lu, Ph.D.
Panagiotis Anastasopoulos, Ph.D.
Manjriker Gunaratne, Ph.D.
Fred Mannering, Ph.D.
Mingyang Li, Ph.D.
Lu Lu, Ph.D.
Asphalt Overlay, Endogenous Design, Life-Cycle Assessment (LCA), Pavement Performance, Unobserved Heterogeneity
Highway pavement is a critical component of the highway transportation infrastructure. After the construction of a pavement system, pavement condition will deteriorate over time due to a combination effect of material aging, traffic loading, and environmental impact. To restore the pavement performance and to reduce its adverse effects on public users and environment, asphalt overlay activities are conducted frequently during the service life of a pavement. As a key component that bridges the overlay policies with future pavement performance, economic cost and environmental impact, the forecast accuracy of post-overlay pavement performance model is extremely important. However, most of previous studies did not consider the effect of endogenous overlay design and continuous asphalt overlay thickness on the initiation of pavement distresses and roughness progression in their pavement performance models. To fill the research gap, a series of post-overlay distress initiation models and post-overlay roughness progression models were proposed with integrated asphalt overlay projects from the long-term pavement performance (LTPP) Specific Pavement Study (SPS-3 and SPS-5) and General Pavement Study (GPS-6) programs. Then, the life-cycle environmental and economic impacts of different overlay strategies were evaluated by incorporating the proposed post-overlay roughness model in the integrated LCA-LCCA framework. Based on the analysis results, endogenous asphalt overlay design and continuous asphalt overlay thickness were validated to have a significant effect on post-overlay roughness progression and distress initiation, which should not be ignored in scheduling pavement maintenance and rehabilitation (M&R) activities.
Scholar Commons Citation
Xin, Chunfu, "Post-overlay Flexible Pavement Performance Modeling and Its Application in Sustainable Asphalt Overlay Policy Making" (2020). Graduate Theses and Dissertations.