Characteristic Evolution of GO/SBS-Modified Asphalt during Aging

Table 1

Basic properties of the virgin asphalt.

Item	Unit	Measured value	Standard
Penetration (25°C)	0.1 mm	72	ASTM D5-13
Softening point	°C	49.5	ASTM D36-76
Ductility (15°C)	cm	>100	ASTM D113-99
Viscosity (135°C)	Pa s	0.535	ASTM D2170
Flashpoint	°C	284	ASTM D92
Solubility	%	99.6	ASTM D2042