ABSTRACT
The adhesion between asphalt and aggregate is the process that asphalt wet aggregate. According to the wetting equation derived from the theory of surface free energy, the adhesion properties between asphalt and aggregate can be evaluated quantitatively. This paper made a research on the adhesion work between different asphalt and aggregates based on the theory of surface free energy, which evaluated the adhesion properties of asphalt and aggregate at a high temperature. The results show that the relationship between the adhesion and temperature is in accordance with quadratic equation. And there exists a maximum point, which indicates an optimum wetting state between asphalt and aggregate. The various adhesion properties between different asphalt and different aggregate occur in corresponding temperatures, which has guide meaning to determine the mixing and molding temperature of asphalt mixtures.
