Effect of Silicone Oil on Dispersion and Low-Temperature Fracture Performance of Crumb Rubber Asphalt

Table 2

Basic material properties asphalt binders.

Binder tests	Neat asphalt	Neat + 18% CR	Neat + 18% CR + 3% SO	Rubber asphalt specification limits
Penetration: 4°C, 200 g, 60 sec, 1/10 mm (ASTM D5)	70	49	60	10
Softening point ASTM D36 (°C)	45	65	62	57
Ductility @ 15°C (cm)	100	—	—	—