Study on the rheology of asphalt mastic mixtures using RFCC as filler

Abstract

The primary objective of this study is the utilization of RFCC (Residue Fluid Catalytic Cracking) petrochemical refuse in the production of asphalt concrete. The rheological properties of RFCC-based asphalt mastic were experimentally determined and compared to those of the conventional limestone-based asphalt mastic. The stiffness and viscosity of the RFCC-based asphalt mastic were increased in comparison to limestone-based asphalt mastic. In particular, the stiffness and viscosity of the RFCC-based asphalt mastic increased substantially at high temperatures, with a stiffness increase of 1.41 times and a viscosity increase of 1.42 times compared to the limestone-based asphalt mastic. The suitableness of RFCC in the production of asphalt concrete was further confirmed by the results.