Adhesion Improvement between RAP and Emulsified Asphalt by Modifying the Surface Characteristics of RAP

Table 1

Physical and chemical properties of original asphalt.

Properties	Test results	Specification values
Softening point (°C)	48.0	≥46
Penetration (25^oC, 100g, 5s) (0.1 mm)	71.2	60–80
Ductility (15^oC, 5°cm/min) (cm)	≥100	≥100
Density (15°C) (g/m^3)	1.029	—
Mass loss (%)	0.24	−0.8–0.8
RTFOT, penetration ratio (25°C) (%)	65.9	≥61
Ductility (15°C, 5 cm/min) (cm)	23.9	≥15