Identifying the Thermal Storage Stability of Polymer-Modified Asphalt with Carbon Nanotubes Based on Its Macroperformance and Micromorphology

Table 1

Technical characteristics of A70# asphalt binders.

	Index	Test result	Technical requirement
	25°C, 100 g, 5s, penetration (0.1 mm)	63	60∼80
	Penetration index	−1.45	−1.5∼+1.0
	Softening point (°C)	46.2
	60°C, dynamic viscosity (Pa.s)	248
	10°C, 5 cm/min, ductility (cm)	22.51
	Wax content (%)	2.18	<2.2
	Quality change (%)	0.05
RTFOT	25°C, residual penetration ratio (%)	73.85
	10°C, residual ductility (cm)	9