EPJ Web Conf.
Volume 249, 2021Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Section||Fluids and Particles|
|Published online||07 June 2021|
Granular-slurry rheology and asphalt compaction
Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China
2 School of Engineering, Westlake University, Hangzhou, Zhejiang 310024, China
3 Department of Civil, Environmental and Geo-Engineering University of Minnesota, Minneapolis, MN 55455, United States
4 St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, MN 55414, United States
* Corresponding author: email@example.com
Published online: 7 June 2021
Hot mixed asphalt (HMA) is a mixture of particles (coarse and fine aggregates) and interstitial fluid (asphalt binder) designed to compact and harden for long-lasting roads. In this study, we implement a two-scale approach to capture the compaction behaviour of hot asphalt mixtures using both a granular-slurry rheology (GSR) at a smaller scale and a discrete element method (DEM) simulation at the scale of a compactor. We show that this modelling effort captures the compaction of HMA with different binder viscosities modified by adding graphene nano-platelets (GNP). This research has the capacity to shed light on how the properties of mixture components can influence compaction efficiency and effectiveness.
A video is available at https://doi.org/10.48448/z6gt-cw54
© The Authors, published by EDP Sciences, 2021
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