Modified Cutback as Tack Coat by Application of Pyro-Oil Obtained from Municipal Plastic Waste: Experimental Approach: Fid-Bau Portal

Modified Cutback as Tack Coat by Application of Pyro-Oil Obtained from Municipal Plastic Waste: Experimental Approach

Kulkarni, Swanand B. / Ranadive, Mahadeo S.

Increasing crude oil prices and environmental concerns demand an alternative petroleum-based bitumen binder for Indian road construction industry. In this study, viscosity grade (VG)10 bitumen was modified by adding pyro-oil obtained from municipal plastic waste. The calorific value ( $10,745 kcal / kg$ ) and the Fourier transform infrared spectra of the specimen pyro-oil were identical to those of diesel and bitumen respectively. This study investigated the use of this specimen as a substitute for diesel to prepare modified cutback bitumen, which acts as a tack coat between two layers of bituminous pavement. All empirical results of the modified cutback were within ASTM limits. Furthermore, using a newly developed attachment to the Marshall stability apparatus, the shear strength of the tack coat was tested at various temperatures. At the rate of application of tack coat as $0.20 kg / m^{2}$ and with 20% addition of pyro-oil, the optimal shear strength reached was 331.21 kPa. Dynamic shear rheometer testing determined the complex shear modulus ( $G^{*}$ ) value to be 1.975 kPa. Due to its adequate performance and green synthesis, the modified cutback bitumen can be a potential solution for use in flexible pavement.