The utilization of steel slag in flexible pavement has recently gained attention due to its increasing availability. Steel slag is a by-product material generated during the production of steel and is typically produced in large quantities. It is a dense and hard material that makes it applicable for use as a coarse aggregate in stone mastic asphalt (SMA). Using steel slag as an aggregate in SMA can help to reduce the environmental impact of construction activities. Steel slag is an industrial waste material that is commonly disposed of in landfills, which can cause environmental pollution. By utilizing steel slag in SMA, it can be given a second life and contribute to the development of sustainable infrastructure. The study aims to determine the optimal replacement percentage of steel slag that achieves the desired mechanical properties and overall performance of SMA. Based on experimental results in this paper, Marshall stability of SMA mixtures increased with the increase in the percentage of steel slag. the results demonstrate that the use of steel slag as a partial replacement of natural aggregates in SMA can enhance the mechanical properties of the mixture and enhance pavement performance. Therefore, the use of steel slag as a sustainable alternative to natural aggregates can be an efficient way to reduce the environmental impact and promote sustainable construction practices.

PDF (Download Full text)

Download Citation (XML)