A Review of Sustainability Asphalt Mixtures

Abstract

Sustainability in asphalt mixtures refers to the use of environmentally friendly materials and practices in the construction and maintenance of roads and pavements. The purpose of this research is to review the waste materials that can be recycled and reused in the production of asphalt, as well as the technologies that have been created or underdeveloped to address environmental challenges related to asphalt mixtures. Warm Mix Asphalt (WMA) technology and reclaimed asphalt pavement (RAP) were evaluated with respect to their environmental and economic benefits and engineering performance as the main components of pavement sustainability. Rutting, moisture susceptibility, heat and fatigue cracking resistance were all examined as part of the performance evaluation. The study of the environmental impact of these technologies and materials was based on two major environmental effects: greenhouse gas emissions (GHGs) and energy consumption. Regardless, there are concerns over some aspects of warm-mix asphalt such as lower resistance to fatigue cracking, rutting and potential water-susceptibility problems, particularly with mixes prepared with water-based technologies.