Steel Symphony: Paving India's Highways with Innovation

Slag Road
Slag RoadImage Source: PIB


India marks a milestone with the inauguration of its first Steel Slag Road section on NH-66 Mumbai-Goa National Highway. Developed by CSIR-Central Road Research Institute, the revolutionary Steel Slag Road Technology transforms steel industry waste into wealth. In collaboration with JSW Steel, the 1 km four-lane road showcases the superior qualities of processed steel slag aggregates, promising stronger and more eco-friendly national highways.



In a groundbreaking achievement, India has unveiled its inaugural Steel Slag Road section on the NH-66 Mumbai-Goa National Highway, ushering in a new era of sustainable highway construction. The visionary Steel Slag Road Technology, a creation of CSIR-Central Road Research Institute (CSIR-CRRI), is turning the byproducts of steel industries into valuable resources, facilitating the National Highways Authority of India (NHAI) in the construction of robust and environmentally conscious national highways.

The inauguration ceremony, graced by Dr. V.K. Saraswat, Member (S&T), NITI AAYOG, highlights the transformative potential of this innovative technology. Dr. Saraswat commended the CSIR-CRRI's Steel Slag Road Technology for converting steel industry waste into wealth and contributing to the development of stronger and eco-friendly national highways across the country.

Under the expert guidance of CSIR-CRRI, JSW Steel has successfully constructed a 1 km long, four-lane steel slag road section on the Indapur-Panvel Section of NH-66 Mumbai-Goa. This project, utilizing approximately 80,000 metric tons of CONARC Steel slag processed into steel slag aggregates at the JSW Steel Dolvi, Raigad plant, showcases the superior mechanical properties of processed steel slag aggregates compared to natural aggregates. These processed aggregates are utilized in all layers of the road, replacing traditional natural aggregates. Remarkably, the road features both bituminous and cement concrete steel slag sections on the right-hand side (RHS) and left-hand side (LHS) carriageways.

Shri G S Rathore, Chief Operating Officer, JSW Steel Ltd, expressed appreciation for the collaborative efforts of CSIR-CRRI, highlighting the support received from NHAI in the successful execution of the project.

Dr. Manoranjan Parida, Director, CSIR-CRRI, shared insights into the institute's ongoing efforts, mentioning the development of national guidelines for the utilization of processed steel slag in road construction. He underscored successful collaborations with steel industries in Gujarat, Jharkhand, and Arunachal Pradesh.

NHAI Regional Officer, Mumbai, and Chief General Manager, Shri Anshumali Srivastava, lauded the novel technological features and exceptional performance of the steel slag road section. Shri Satish Pandey, Principal Scientist CSIR-CRRI and Project Leader of the Steel Slag Road project, highlighted the cost-effectiveness of the project, with a 28% reduction in thickness compared to conventional bituminous roads, ensuring better durability and substantial economic benefits.


India's foray into the realm of Steel Slag Road Technology marks a significant stride towards sustainable infrastructure development. The successful implementation of this innovative approach not only repurposes industrial waste but also promises enhanced durability and cost-effectiveness. As the nation continues to build a network of eco-conscious highways, the Steel Slag Road stands as a testament to the potential of merging technology and environmental responsibility.

Related Stories

No stories found.
SteelGuru Business News