Changes in Nanoscaled Mechanical and Rheological Properties of Asphalt Binders Caused by Aging

Table 1

Properties of Shell Pen 70# asphalt.

Test index	Unit	Pen 70	Specs	Test method
Penetration (25°C, 5 s, 100 g)	0.1 mm	68	60~80	T0604
Ductility (5 cm/min, 15°C)	cm	>100	≥100	T0605
Softening point (global method)	°C	58	≥46	T0606
Dynamic viscosity (60°C)	Pa·s	230	≥180	T0625
The residue after thin film oven				T0609
Quality loss	%	0.04	≤±0.8	T0609
Ductility (5 cm/min, 15°C)	cm	27	15	T0605
Penetration ratio (25°C, 5 s, 100 g)	%	69	≥58	T0604