Effect of Blending Degree between Virgin and Aged Binder on Pavement Performance of Recycled Asphalt Mixture with High RAP Content

Table 8

Four mixing methods.

Mixing method/mixing temperature	Mixing method 1	Mixing method 2	Mixing method 3	Mixing method 4 (100% DOB)
	150°C	165°C	180°C	165°C
RAP preheating time (h) and temperature (°C)	2; 110
Heating temperature of virgin binder (°C)	165
Heating temperature of virgin aggregate (°C)	180
Mixing time (min)	3
Aggregate gradation	AC-16
Binder content	Same
DOB state	Partial blending	Partial blending	Partial blending	Complete blending