Rheological and Chemical Characteristics of Asphalt Binders Recycled using Recycling Agents and Nanoparticles

Abstract

The reuse and recycling of materials, especially materials derived from nature, is necessary for a sustainable environment and world. Asphalt mixture is a combination of asphalt binder and aggregates, both of which originated from nature. The reuse and recycling of aged asphalt materials (RAP) is widespread. However, a large portion of these materials is wasted. One primary reason for the reluctance to use a high percentage of RAP in recycled asphalt is uncertainty in the long-term performance of recycled asphalt pavement. To improve the long-term performance of recycled asphalt, new additives and Recycling Agents (RA) are used to modify the binder’s properties. However, different RAs will change the recycled binder’s properties differently, resulting in different long-term recycled binder properties. Therefore, this study was conducted to correlate the chemical indices and rheological properties of the recycled binder using different recycling agents.