Evaluating the Physical and Rheological Properties of Rejuvenated Styrene-Butadiene-Styrene-Modified Asphalt Binders

Table 1

The basic properties of SBS-modified asphalt binders.

Properties	Methods	Limits	Values
Virgin asphalt binders
Penetration at 25°C (0.1 mm)	ASTM D5	40∼60	51
Softening point (°C)	ASTM D36	≥60	79
Ductility at 5°C (cm)	ASTM D113	≥20	26
Elastic recovery at 25°C (%)	ASTM D6084	≥70	88
Storage stability, ΔSoft. Points, 48 h (°C)	ASTM D5976	≤2.5	1.5
Solubility in trichloroethane (%)	ASTM D2042	≥99	99.5
Flash point COC (°C)	ASTM D92	≥230	280
Viscosity at 135°C (Pa·s)	ASTM D4402	≤3	1.5
RTFOT residues
Mass loss (%)	ASTM D2872	≤0.6	0.2
Penetration ratio at 25°C (%)	ASTM D5	≥65	69
Ductility at 5°C (cm)	ASTM D113	≥15	17