Gradation Design and Performance Evaluation of High Viscosity Asphalt Mixtures

Table 1

Test indices of 70# neat asphalt binder.

Parameters	Unit	Result	Criteria	Method [23]
Penetration (25°C 100 g 5 s)	0.1 mm	71	60–80	T0604
Penetration index	—	−1.28	−1.5–+1.0	T0604
Softening point (ring & ball test)	°C	47	≥46	T0606
Ductility at 15°C	cm	31	≥20	T0605
Ductility at 25°C	cm	>100	>100	T0605
Kinematic viscosity (60°C)	Pa. s	210	≥180	T0625
Solubility	%	99.7	≥99.5	T0607
Density	g/cm^3	1.03	Actual measurement	T0603