An Overview on Utilization of Steel Slag as Road Construction Materials

The transportation and highway industries are starting to use sustainable, recycled materials in order to reduce their reliance on natural sources. One of these materials is steel-furnace slag, which is a by-product of steel manufacturing that is usually disposed of in the environment, causing pollution. Due to its high disposal cost and the positive features of steel slag, many countries have recognized it as a useful construction material rather than an industrial waste. Reusing steel slag can save natural resources and reduce the need for landfills for its disposal. It has been found to be a good material for road construction, as it outperforms natural aggregates in terms of skid resistance, rutting, moisture damage resistance, and fatigue. This paper examines the advantages of using steel slag in road construction, along with any potential detrimental effects. It also provides a comparison between different types of slag in terms of their suitability for road construction.