Study on the Performance and Adhesion Behavior of Ultrathin Wearing Course Using Calcined Bauxite as Aggregate

Table 1

Technical properties of SK-90# asphalt binder.

Item		Unit	Result	Technical requirements	Specification
Penetration (25°C, 100 g, 5 s)		0.1 mm	92	80～100	ASTM D5-97
Ductility (10°C)		cm	>100	≥45	ASTM D113-99
Softening point		°C	48.3	≥45	ASTM D36-06
Density (15°C)		g/cm^3	0.981	—	ASTM D70-76
RTFOR (163°C, 75 min)	Penetration ratio (25°C)	%	71.3	≥57	ASTM D5-97
	Mass loss	%	−0.26	≤±0.8	ASTM D2872-04
	Ductility (10°C)	%	14	≥8	ASTM D113-99