Rutting resistance of direct coal liquefaction residue (DCLR) modified asphalt mixture under variable loads over a wide temperature range
Document Type
Article
Publication Date
10-10-2020
Department
Department of Civil, Environmental, and Geospatial Engineering
Abstract
This research aims to investigate the rutting resistance of Direct Coal Liquefaction Residue (DCLR) modified asphalt mixture under variable loads over a wide temperature range. The SK-90 asphalt mixture and Styrene-Butadiene-Styrene (SBS) modified asphalt mixture were selected as comparisons. The rutting resistance of these three mixtures was studied by the rutting test with temperature of 30–70 °C under variable loads of 0.7–1.0 MPa. Meanwhile, the double factor variance analysis was performed to study the effect of temperature and load on the rutting resistance of mixtures, and the radar analysis was applied for comprehensive evaluation on the rutting resistance as well. The results demonstrate that the rutting resistance of mixtures presents a negative linear correlation with the load or the temperature. Comparing load, the temperature shows a more significant influence on the resistance to rutting of mixtures. Under the coupling effect of temperature and load, the DCLR modified asphalt mixture had higher values of Va, Vb, WL and WT than the other two mixtures. Therefore, among these three mixtures, the DCLR modified asphalt mixture owns the best stable rutting resistance, which gives the least sensitivity and dependence on the temperature and load.
Publication Title
Construction and Building Materials
Recommended Citation
Jie, J.,
Zhe, W.,
Ran, Z.,
Jianming, W.,
Zhi, S.,
You, Z.,
&
Junpeng, H.
(2020).
Rutting resistance of direct coal liquefaction residue (DCLR) modified asphalt mixture under variable loads over a wide temperature range.
Construction and Building Materials,
257.
http://doi.org/10.1016/j.conbuildmat.2020.119489
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/2639
Publisher's Statement
© 2020 Elsevier Ltd. Publisher’s version of record: https://doi.org/10.1016/j.conbuildmat.2020.119489