Effect of Multiple-Walled Carbon Nanotubes (MWCNTs) on Asphalt Binder Rheological Properties and Performance

Table 2

Asphalt cement physical properties.

Test	Unit	AC (40–50)
		Test results	SCRB, 2003 criteria
Penetration (100 gm, 25°C, 5 s)	(0.1 mm)	44	40–50
Rotational viscosity at 135°C	Pa s	0.540	…..….
Ductility (25°C, 5 cm/min)	cm	115	>100
Flash point (cleave land open cup)	°C	298	Min. 232
Softening point (4 ± 1) °C/min	°C	52	……….
Specific gravity	…..	1.03	1.01–1.05