Abstract:
The modified asphalt is used to improve the
performance of pavement when traffic loads are applied with
changing environmental conditions. In this study, the bitumen
was modified by adding Low Density Polyethylene as such as
2%, 4%, 6% and 8% of total bitumen content. The
modification of bitumen was analysed under Fourier
Transform Infrared Spectroscopy. These physical properties of
modified bitumen samples were also investigated through
conventional laboratories tests as such penetration test,
softening point test and ductility test. The burning limestone,
paddy husk ash and rubber dust were used as trial material to
modify the asphalt with 1%, 2%, 3%, 4% and 5% of total
aggregate content and Marshall Tests of asphalt samples were
conducted with 4.6% bitumen content. The 3.2% of burning
limestone was preferred to prepare for the asphalt mixture
with optimum 6% Low Density Polyethylene content of
modified bitumen. The Marshall Test was conducted to obtain
the physical properties of modified asphalt mixture. The
adhesion between aggregates and bitumen was analysed with
bond mechanism which was confirmed that modified asphalt
with burning limestone filler would be to increase the
durability of pavements.
Citation:
S. Kajugaran and V. S. C. Weragoda, "Development of polymer modified asphalt using filler," 2016 Moratuwa Engineering Research Conference (MERCon), 2016, pp. 355-360, doi: 10.1109/MERCon.2016.7480167.
