On the Use of Recycled Waste Materials in Ballasted Railway Infrastructures: A Review

ABSTRACT: The use of waste materials in railway infrastructure is becoming increasingly important due to the need for more sustainable and cost-effective transportation systems. This paper reviews the application and performance of recycled materials in different parts of ballasted railway tracks, including sleepers, ballast, sub-ballast, and interface zones. The study confirms the feasibility of using recycled materials such as rubber, plastic, and glass to improve the performance and properties of railway infrastructure. The findings suggest that the use of waste materials can be cost-effective and efficient in improving the long-term performance and stability of the ballasted track. It is important to note that each type of waste material has a different effect on the performance of the different parts of the railway track. Overall, the study supports the development of more environmentally friendly and cost-effective ballasted tracks and expands the understanding of the performance of railway tracks maintained using waste materials.