Journal
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
Volume 16, Issue 2, Pages 157-167Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10298436.2014.937714
Keywords
finite element method; pavement rehabilitation; heat transfer; thermal properties; asphalt concrete
Categories
Funding
- Lebanese National Council for Scientific Research (LNCSR)
- Munib and Angela Masri Institute of Energy and Natural Resources
- University Research Board (URB) at the American University of Beirut
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Accurate simulation of the cooling characteristics of newly paved asphalt concrete (AC) layers is of particular significance due to its potential use in efficient planning and scheduling of paving works. This study builds on principles of thermodynamics and heat transfer to develop a finite element framework that simulates the actual cooling of newly paved AC layers. For a given set of climatic conditions, such as wind, solar flux and air temperature, the presented model incorporates the effects of conduction, convection and radiation to predict the cooling rates of the pavement. The model is first validated using data acquired from laboratory and field set-ups. Then, the model is used to assess the effect of critical parameters such as layer thickness, time of paving, and material properties on asphalt cooling rates and their impact on paving operations.
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