Effect of Extraction Residue on the Properties of Asphalt Binders
The present study investigates the influence of extraction residue on the properties of aged and unaged asphalt binders. The extraction residues such as trichloroethylene and mineral filler were varied in selected range of percentage (0.5, 1, 1.5 and 2%) and their effect was comprehended in the ductility, softening point, penetration and dynamic shear rheometer tests of 70# grade and SBS modified asphalt binders. The research shows that: (1) the trichloroethylene has more influence on the properties of asphalt binders than the mineral filler; (2) the effect of extraction residue on the properties of 70# grade asphalt is better while their effect on SBS modified asphalt is poor; (3) ageing asphalt binder is less sensitive to extraction residue compare to unaged asphalt binder.
