https://doi.org/10.1051/epjconf/202124909010
Granular-slurry rheology and asphalt compaction
1
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: kmhill@umn.edu
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
