The Effect of Aging on the Cracking Resistance of Recycled Asphalt

Table 1

Performance grade of the recovered binder.

Property		AASHTO test method	Specifications	Temperature	Results
Recovered binder
Dynamic shear; , 10 rad/s, kPa		T 315	2.2 min.	70°C	6.11
				76°C	2.86
				82°C	1.38
PAV residue (100°C, 300 psi, 20 hr)
Dynamic shear; , 10 rad/s, kPa		T 315	5000 max.	22°C	5800
				25°C	4110
Bending beam	Stiffness, MPa (60 s)	T 313	300 max.	−12°C	143
	m-value		0.300 min.		0.334
	Stiffness, MPa (60 s)		300 max.	−18°C	279
	m-value		0.300 min.		0.288
AASHTO M 320 Superpave Binder Grade, PG					76–22