Open AccessViscoelasticity Evaluation of Regenerated Asphalt Containing Waste Engine Oil Based on Rheological Analysis
Author(s) -
Yajun Xiao,
Wentong Wang,
Wenwen Wang,
Dongdong Yuan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/643/1/012075
Subject(s) - asphalt , viscoelasticity , rheology , softening point , materials science , waste oil , cooking oil , dynamic modulus , composite material , environmental science , waste management , engineering , dynamic mechanical analysis , chemistry , polymer , biochemistry , catalysis , biodiesel
In order to explore the viscoelastic properties of waste engine oil (WEO) on mixed asphalt, mixed asphalt was prepared by fusing base asphalt and aged asphalt. The effect of waste engine oil content on the physical and viscoelastic properties of asphalt mixtures was studied through experiments. The test results show that the viscosity and softening point of asphalt mixture is reduced by adding waste engine oil. The complex modulus (G*) of asphalt binder decreases with the addition of waste oil at different test frequencies. With the increase of waste oil content, the phase angle (ä) of asphalt mixtures increases at specific frequencies. When the content of waste oil exceeds 6%, G* and δ will not change significantly. The stiffness increase caused by ageing asphalt in mixed asphalt will be offset by adding 2-4% waste oil. This indicates that waste oil can be used as regenerant to provide elasticity and flexibility for asphalt binder.