Evaluation of Rutting and Fatigue Behaviors of Asphalt Binders Modified with Calcium Lignosulfonate

Table 1

Physical specifications of the neat asphalt binder.

Test properties	Unit	Test method	Test result	Specification limits
Penetration @ 25°C	(0.1 mm)	ASTM D5	66	60–70
Softening point	(°C)	ASTM D36	49	49–56
Viscosity @ 135°C	(mPa·s)	ASTM D2170	356	≥300
Relative density @ 25°C	—	ASTM D70	1.018	1.01–1.06
Flash point	(°C)	ASTM D92	310	≥232