Effects of Test Conditions on APA Rutting and Prediction Modeling for Asphalt Mixtures

Table 1

Technical properties of Shell 70 matrix asphalt.

Test index	Unit	Test result	Technical requirement
Penetration (100 g, 5 s, 25°C)	0.1 mm	76.83	60~80
Penetration index	—	−1.2	−1.5~1.0
Softening point	°C	46.2	≥45
Ductility (5 cm/min, 10°C)	cm	79.5	>25
Ductility (5 cm/min, 15°C)	cm	138.0	>100
Wax content (distillation method)	%	1.9	≤2.2
Flash point	°C	316.3	≥260
Solubility	%	99.58	≥99.5
Density (15°C)	g/cm^3	1.036	Measured records
Density (25°C)	g/cm^3	1.033	—
Quality loss after RTFOT	%	0.170	±0.8
Residual penetration after RTFOT (100 g, 5 s, 25°C)	0.1 mm	52.83	—
Penetration ratio after RTFOT (25°C)	%	68.76	≥61
Residual ductility after RTFOT (5 cm/min, 10°C)	cm	10.4	>6
Residual ductility after RTFOT (5 cm/min, 15°C)	cm	46.8	>15