Effect of Multiple-Walled Carbon Nanotubes (MWCNTs) on Asphalt Binder Rheological Properties and Performance

Table 6

Test results of modified asphalt binder with MWCNTs.

Parameter	Criteria	Standard specifications	Modified asphalt binder
			1% MWCNTs		3% MWCNTs		5% MWCNTs
			Test results	Measured temp.	Test results	Measured temp.	Test results	Measured temp.
RV, Pa s	3 Pa s, max	(AASHTO) (T-316)	0.77	@135°C	1.12	@ 135°C	2.21	@135°C
Aging	Un-aged binder
G/sin δ, kPa	1 kPa, min	(AASHTO) (T-315)	1.89	@70°C	1.69	@76°C	3.43	@82°C
			0.95	@76°C	0.887	@82°C	1.01	@88°C
Aging	Rolling thin film oven (RTFO)
G/sin δ, kPa	2.2 kPa, min	(AASHTO) (T-315)	5.18	@64°C	3.651	@76°C	6.12	@82°C
			2.09	@70°C	1.13	@82°C	2.96	@88°C
Aging	Pressure aging vessel (PAV)
G/sin δ, kPa	5,000 kPa, max	(AASHTO) (T-315)	4,532	@28°C	4713	@31°C	4710	@31°C