Micro/Nanoscale Study on the Effect of Aging on the Performance of Crumb Rubber Modified Asphalt

Table 1

Three main indexes test of O-CR and A-CR.

Item	O-CR	A-CR
Penetration (5°C, 100 g, 5 s; 0.1 mm)	11.6	6.3
Penetration (15°C, 100 g, 5 s; 0.1 mm)	30.2	15.6
Penetration (25°C, 100 g, 5 s; 0.1 mm)	73.8	37.5
Ductility (5°C; cm)	16.5	12.3
Softening (°C)	57.3	63.4