Taofeek Olalekan Salawudeen, Akeem Olatunde Arinkoola, Abass Olanrewaju Alade, Kazeem Kolapo Salam, Oluwakemi Augustina Olufayo, Monsurat Omolola Jimoh, and Ebenezer Olujimi Dada

DOI: 10.14456/sjst-psu.2020.176

pp. 1360 - 1367

Abstract

The modification of bitumen using polymers has reached its limits due to rutting and cracking problems under severe
temperatures. Yet, there are few studies on bitumen blends using multiple materials. This research investigated the effects of
Multiwall Carbon Nanotubes (MWCNT) in a ternary mixture (Agbabu bitumen (ANB) - polypropylene (PP) – MWCNT) and
optimized the functional formulation. Certain properties of ANB, such as the loss in ductility, flash, fire, penetration, and
softening points were improved by blending MWCNT (0.1 – 1.21 g), PP (0.15 – 4.05 g) and ANB (94.79 – 99.75 g). The
improvements were by 43.27, 43.76, 78.41 and 2.80% for flash, fire, penetration, and softening points with the optimal blend of
97.92, 0.1 and 1.98 g of ANB, MWCNT, and PP, respectively. This large improvement in composite properties is superior to the
polymeric binary systems, and concordant with ASTM and BS standard requirements.