Redução da viscosidade do asfalto-borracha modificado com óleos de cozinha e motor residuais: uma revisão sistemática

Asphalt pavement plays a crucial role in transportation infrastructure, directly influencing the durability and performance of roads. However, the high viscosity of rubber-modified asphalt presents a significant challenge, as it requires higher application temperatures, resulting in increased energy consumption and pollutant emissions. In search of sustainable and efficient solutions, the use of waste oils, such as used cooking oil and used engine oil, has emerged as a favorable approach, helping to reduce viscosity, improve the mechanical properties of rubberized asphalt, and promote waste recycling. Thus, this study explores the state of the art on the use of waste cooking and engine oils in rubber-modified asphalt for viscosity reduction through a Systematic Literature Review (SLR). Using the electronic databases Scopus, Web of Science, and ScienceDirect, 16 articles were selected after a filtering process based on inclusion and exclusion criteria and parameters. These articles were analyzed and discussed, focusing on the addition of waste cooking and engine oils to rubberized asphalt, with emphasis on the adopted procedures and their results. It can be concluded thatthe examined studies validated the use of waste oils as viscosity-reducing agents. Although there are few publications in the field of asphalt pavements modified with these characteristics, it was possible to identify research gaps for future studies.