Dissertation
Laboratory Investigation of Accelerated Asphalt Ageing for Improved Prediction of Oxidative Weathering, Fretting and Ravelling of Airport Pavement Surfaces
University of the Sunshine Coast, Queensland
Doctor of Philosophy, University of the Sunshine Coast, Queensland
2022
DOI:
https://doi.org/10.25907/00713
Abstract
Ravelling, which is defined as aggregate loss from an asphalt surface, is one of the modes of failure of flexible pavements in both highways and airport pavement surfaces. Ravelling is a complex phenomenon that has many interdisciplinary mechanisms and causes. One of the major objectives of this study was set to provide a clear basis for the evaluation of different mixtures in terms of ravelling resistance.
A preliminary investigation of three airports in south-east Queensland and surface texture measurements using a laser texture meter indicated no statistically significant difference between trafficked and untrafficked sections in both runways and taxiways. Hence, a realistic test that simulates environmental field conditions that leads to bitumen ageing and mixture embrittlement which causes ravelling has been proposed and a weathering chamber that combines UV irradiation and heat has been used to simulate field conditions in addition to an air-flow oven.
Details
- Title
- Laboratory Investigation of Accelerated Asphalt Ageing for Improved Prediction of Oxidative Weathering, Fretting and Ravelling of Airport Pavement Surfaces
- Authors
- Ahmed Abouelsaad - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
- Contributors
- Greg White (Supervisor) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
- Awarding institution
- University of the Sunshine Coast, Queensland
- Degree awarded
- Doctor of Philosophy
- Publisher
- University of the Sunshine Coast, Queensland
- DOI
- 10.25907/00713
- Organisation Unit
- University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99687098902621
- Output Type
- Dissertation
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