Investigation of the Performance Properties of Recycled Asphalt Mixtures Modified with Rejuvenator and Fibers

In the modern era, due to the shortage of natural resources and the damage of the environment, the benefits of recycling asphalt material is not negotiable. In this research study, the performance properties of asphalt mixtures containing 50% and 100% of reclaimed asphalt pavement modified with Cyclogen as rejuvenator and different percentage of glass-Polyolefine fiber (0.06%, 0.12% and 0.18%) was investigated. For this purpose, resilient modulus, moisture susceptibility and dynamic creep tests was conducted on the manufactured asphalt mixtures. The results showed that using rejuvenator led to decrease in resilient modulus, rutting resistance, moisture susceptibility criterion and indirect tensile strength of asphalt mixtures. However, the negative impact of the rejuvenator on rutting resistance, resilient modulus and moisture sensitivity was compensated by using fibers. The moisture resistance of asphalt mixtures was also improved by adding fiber in the mixtures. The optimum amount of glass-Polyolefine fiber in asphalt mixtures was determined as 0.12%.