Comparative Numerical Analysis of Elastic and Viscoelastic Properties in Warm Mix Asphalt

The elastic and viscoelastic characteristics of Warm Mix Asphalt (WMA) and traditional Hot Mix Asphalt (HMA) are closely compared in this investigation. Motivated by the need to address environmental issues, WMA, which is characterized by lower manufacturing temperatures, efficiently lowers greenhouse gas emissions and energy consumption. Furthermore, by reducing reliance on natural aggregates, the use of Recycled Asphalt Pavement (RAP) in WMA improves sustainability. In this study, WMA15% RAP and WMA30% RAP samples were mixed with 50/70 grade bitumen modified with Sasobit additive, while the HMA samples were mixed with non-modified 50/70 grade bitumen. Through the use of Maxwell model in pony series technique, the study highlights the importance of viscoelastic characterization for precise finite element modelling, highlighting the behaviour of asphalt materials over time. Results of the study shows that elastic characterization in FEM overdesign when compared to viscoelastic while the elastic characterization in Layered Elastic Analysis model under design.