India Paves Six Lane Steel Slag Road

India, leveraging steel slag waste from production, constructed its maiden six-lane road connecting NH-6 to Hazira Port in Surat.
Slag Road
Slag RoadImage Source: GOV

Synopsis

India, leveraging steel slag waste from production, constructed its maiden six-lane road connecting NH-6 to Hazira Port in Surat. Ministry of Steel funded a pioneering R&D project, collaborating with CSIR-CRRI and the steel industry, leading to guidelines for using processed steel slag in road construction. Once finalized, these guidelines promise a sustainable substitute for natural aggregates.

 

Article

India, propelled by its innovative prowess, has pioneered the construction of a groundbreaking six-lane road linking NH-6 to Hazira Port, utilizing steel slag, a byproduct of steel production. Steel slag, typically a solid waste generated during steelmaking, presents a substantial opportunity for sustainable reuse. Approximately 15 million metric tons of steel slag is generated annually from integrated steel plants, emphasizing the potential for recycling this waste into construction materials.

The Ministry of Steel, in collaboration with CSIR-CRRI and the steel industry, embarked on an ambitious R&D endeavor titled “Development of Design Guidelines and Specifications for utilization of steel slag in road construction.” The focal point was substituting natural aggregates with processed steel slag aggregates in the bituminous pavement layers. A pioneering move was witnessed in May 2022, with the construction of a one-kilometer test section, employing processed Electric Arc Furnace (EAF)/CONARC slag from Arcelor Mittal Nippon Steel (AMNS) plant at Hazira for the Surat Hazira road.

Draft guidelines have emerged from this groundbreaking project. These guidelines, developed by CSIR-CRRI, are now in the hands of the Indian Road Congress and the Ministry of Road Transport & Highways for consideration and refinement. Upon finalization, these guidelines promise a revolutionary leap in road construction practices, offering a sustainable alternative to traditional aggregates.

Conclusion

India’s innovative stride in constructing a six-lane road utilizing steel slag as a substitute for natural aggregates showcases its commitment to sustainable infrastructure development. The Ministry of Steel's funding for the R&D project, in collaboration with CSIR-CRRI and the steel industry, aims to revolutionize road construction practices. The draft guidelines created through this endeavor, once finalized, promise a transformative approach towards environmentally friendly and economically feasible road construction.

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