Properties of Asphalt Binders with the Residue from Pyrolysis of Biomass as the Warm Mix Additive

Abstract

Asphalt is a complex mixture of hydrocarbons. Recently, a series of substances have been used as an additive in order to change the asphalt's properties especially in the road pavement engineering. This paper presents the properties changes of two asphalt binders: AC 80/100 and SBS modified binders as the results of using residue from pyrolysis of biomass as the warm mix additive. The resulted asphalt binders were evaluated over a series of analyses including viscosity tests, dynamics shear rheological tests, gel permeation chromatography and asphaltenes content analysis. Generally, it could be concluded that residue from pyrolysis of biomass has a potential to be a warm mix additive in term of viscosity reduction under certain conditions. It has also sufficient Superpave rutting resistance at temperature as high as 64 o C.