Ageing Resistance of Bituminous Binder Modified with Propitious Antioxidant

Bituminous mixes are prepared with aggregates, filler and bitumen as binder. Ageing of bitumen due to oxidation reduces the durability of such mixes. Various research efforts are therefore put in to decrease the ageing potential of binders and use of anti-oxidants has shown substantial success. In this research, Irganox 1010 has been identified as an anti-oxidant which has been found to be economical and yet of limited use in the field of pavement engineering. Various physical and rheological tests were conducted to determine the influence of Irganox 1010 on short-termed as well as long termed aged binders and results were analyzed. Softening Point Index (SPI) and Viscosity Ageing Index (VAI) were determined to understand the influence of Irganox 1010 on bituminous mixes. It was observed that Irganox 1010 significantly reduce ageing potential with usage of 0.6% by weight of bitumen. It has been found to be cost-effective due requirement of small quantities and being of comparatively lesser cost. This material has the potential of large scale usage to increase durability of bituminous mixes.