Research Progress and Hotspots of Steel Slag Application in Road Construction: A Bibliometric Perspective

The accumulation of steel slag has become a significant obstacle for the steel industry in achieving ultra-low emission targets. Given its composition is similar to that of road construction materials, steel slag holds substantial potential for application in sustainable road construction. This study investigated the current status and future trends of steel slag applications in road construction through a bibliometric analysis. The findings reveal that steel slag applications primarily focus on steel slag concrete, asphalt, steel slag aggregates, and steel slag processing technologies. The activation of its reactivity and stability emerged as a key research direction, with carbonated steel slag demonstrating exceptional performance in road construction. This study provides a scientific foundation for the high-value utilization of steel slag. It suggests optimizing its reactivity, stability, and carbonation, which will be crucial for expanding its use in road construction.

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