Abstract:
The present study evaluated effects of nanoclay and Carbon Nano Tube (CNT) on high
temperature Performance Grade (PG) and rutting performance of asphalt binder using
Superpave rutting parameter and Multiple Stress Creep Recovery (MSCR) test. The Control
binder (VG-10) was blended with 4% nanoclay and 0.75% CNT, and has been termed as
Control+4%nanoclay, and ControK0.75%CNT binders in the study. The results showed that
addition of both nanoclay and CNT increased stiffness and high temperature PG of Control
binder. The results from MSCR test showed that Control binder after addition of nanoclay
and CNT increased Recovery (%R) value and decreased non-recoverable creep compliance
(Jnr)- Stress sensitivity of Control binder did not change after addition of nanoclay and CNT.
The results showed that addition of nanoclay and CNT may help in improving the rutting
resistivity potential of asphalt binder.
