An equation-based multiphysics modelling framework for oxidative ageing of asphalt pavements
نویسندگان
چکیده
Long-term oxidative ageing occurs in asphalt pavements when they are exposed to the ambient environment for extended periods. This phenomenon is dependent on multiple physical fields, including heat transfer, oxygen diffusion from air into interconnected voids of pavement, void channels mastic inside, and growth oxidation products bitumen. Most existing models were established via coupling limited fields. However, accurately determine effect pavement performance, there a need develop multiphysics model that integrates all ageing-related fields comprehensively. The challenge lies physics circularly dependent, time-dependent highly nonlinear. study developed finite element successfully addressed issues high nonlinearity circular dependency pavements. Specifically, differential equation-based approach was employed efficiently couple one integrated model. framework included temperature prediction an involved variety inputs such as site-specific hourly climate data, parameters kinetics bituminous binder, volumetric properties mixture, thermal diffusive materials, structure. validated using profiles different regions Long-Term Pavement Performance (LTPP) database. Fourier-transform infrared spectroscopy (FTIR) data field-aged cores literature. Results showed can predict change profile basis reliably degree across depth zones.
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ژورنال
عنوان ژورنال: Journal of Cleaner Production
سال: 2021
ISSN: ['0959-6526', '1879-1786']
DOI: https://doi.org/10.1016/j.jclepro.2020.124401