Preparation and Performance Analysis of High-Viscosity and Elastic Recovery Modified Asphalt Binder

Table 6

Low temperature performance grading of HVERA binders.

Sample type	Aging mode	−12°C		−18°C		−24°C		PG
		S (MPa)	m	S (MPa)	m	S (MPa)	m
Neat asphalt	RTFO + PAV	187	0.349	455	0.264	735	0.068	PG-22
#1 (5.0%SBS + 10%RA + 10%CR)		85	0.383	220	0.281	521	0.203	PG-22
#2 (5.0%SBS + 10%RA + 12.5%CR)		70	0.398	201	0.291	486	0.214	PG-22
#3 (5.0%SBS + 10%RA + 15%CR)		56	0.405	157	0.301	351	0.220	PG-28
#4 (5.0%SBS + 5%RA + 15%CR)		57	0.418	181	0.311	440	0.228	PG-28
#5 (5.0%SBS + 7.5%RA + 15%CR)		56	0.431	172	0.321	402	0.237	PG-28
#8 (5.0%SBS + 7.5%RA + 15%CR + 0.3%SA)		64	0.446	167	0.446	391	0.246	PG-28