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ABSTRACT
A reaction–diffusion framework for modelling oxidative ageing in bitumen is derived from thermodynamics of irreversible processes. The link between continuum scale and molecular level is established through an activity model based on solubities and molar volumes. General features are demonstrated exemplary for the so-called ‘spurt oxidation process’. Key aspects of the corresponding model are discussed by means of film ageing simulations.
Acknowledgements
The large amount of valuable information provided by Hilde Soenen from NYNAS during many insightful discussions is gratefully acknowledged. The computations discussed in Section 4.2 were performed by using Maple 12. Maple is a trademark of Waterloo Maple Inc. All graphs were produced with Gnuplot, Williams and Kelley (Citation2010).
Disclosure statement
No potential conflict of interest was reported by the author.