Effect of the Amount of Mineral Powder on the Ultraviolet Aging Properties of Asphalt

Table 1

Physical properties of base asphalt and modified asphalt.

Property	SBS modified asphalt	SK-90
Density (15°C)/(g/cm^3)	1.032	1.035
Penetration (25°C, 100 g, 5 s)/(0.1 mm)	73.1	90
Softening point /°C	76	46
Ductility (15°C, 5 cm/min)/cm	41.9	>100
Penetration index (PI)	0.037	−1.37
After TFOT 163°C, 85 min
Mass loss/%	−0.11	0.13
Penetration ratio of 25°C/%	86	60.0
Ductility (15°C, 5 cm/min)/cm	27.5	15.8