Preparation and Characterization of High Modulus Agent Modified Asphalt and Its High Modulus Mixture

Table 2

Technical indexes of pen # 90 asphalt binder.

Indicators	Unit	Standard index	Test values	Standard
Penetration (25°C, 100 g, 5 s)	0.1	80–100	82.9	T0604
Softening point	°C	≥43	46.3	T0606
Ductility (5 cm/min, 15°C)	cm	≥100	167.3	T0605
Dynamic viscosity (60°C)	Pa·s	≥140	162	T0620
Relative density (15°C)	g/cm^3	—	1.034	T0603
After the thin-film oven test (TFOT)
Loss on heating	%Wt	≤±0.8	−0.48	T0609
Retained penetration after TFOT	%	≥57	76
Retained ductility after TFOT	Cm	≥8	10