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Rutting Evaluation of Alaskan Asphalt Pavement Containing Sustainable Materials
Journal of Testing and Evaluation
  • Sheng Zhao
  • Jenny Liu, Missouri University of Science and Technology

Permanent pavement deformation, or rutting, is one of the most noticeable distresses in hot mix asphalt. In Alaska, pavement rutting concerns exist at different levels because of seasonal climate change and traffic variation across the entire state. A number of sustainable materials in recent years have been used in Alaska's pavement construction for their durability and economic and environmental benefits. These materials include modified or highly modified asphalt, warm mix asphalt (WMA), and recycled asphalt pavement (RAP). Using these materials in asphalt pavements may overturn the current understanding of rutting performance in Alaska. Therefore, this study aimed at conducting comprehensive rutting evaluations of these sustainable materials and their applications in Alaska. Based on data collected from 29 Alaskan mixtures, Spearman's rank correlation coefficient (ρ) was used to discover the link between asphalt pavement analyzer (APA) rut depth and asphalt mixture performance tester parameters for rutting evaluation in order to identify good rutting indicators. The correlation of APA rut depth and flow number (FN) was found to be the strongest, and FN was recommended for rutting evaluation if the APA test was not available. APA results confirmed the good rutting resistance of asphalt mixtures containing high-end modified binders, such as WMA that is produced by adding Sasobit and RAP. Preliminary field evaluation showed no significant rutting concerns in Alaska regarding the application of mixtures containing modified binders, WMA, and RAP.

Civil, Architectural and Environmental Engineering
Keywords and Phrases
  • Rutting performance,
  • Modified asphalt,
  • Warm mix asphalt,
  • Recycled asphalt pavement,
  • Spearman's rank correlation coefficient,
  • Alaska
Document Type
Article - Journal
Document Version
File Type
© 2018 ASM International, All rights reserved.
Publication Date
Publication Date
01 Jul 2018
Citation Information
Sheng Zhao and Jenny Liu. "Rutting Evaluation of Alaskan Asphalt Pavement Containing Sustainable Materials" Journal of Testing and Evaluation Vol. 46 Iss. 4 (2018) p. 1366 - 1375 ISSN: 0090-3973
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