ArcelorMittal Nippon Steel India (AM/NS India) has partnered with CSIR-CRRI to advance sustainable infrastructure development by promoting steel slag road technology, replacing natural aggregates with processed steel slag aggregates for road construction. AM/NS India is the first in India to secure a license for this technology, allowing them to produce processed steel slag aggregates at their Hazira plant in Gujarat. The company’s ‘AM/NS Aaker’ brand of slag meets strict quality standards and has proven to be more durable and cost-effective than natural aggregates.
This technology, developed by CSIR-CRRI, is a game-changer for India’s road infrastructure, improving durability and reducing maintenance needs. CSIR-CRRI was awarded a national project by the Ministry of Steel to research steel slag uses, leading to the collaboration with AM/NS India for the ‘all steel slag road’ in Hazira. The steel slag roads are more cost-effective and last longer than traditional bitumen roads, suitable for various environments. India’s first coastal steel slag road was inaugurated at Hazira, with another steel slag road in Surat using ‘AM/NS Aaker’. Steel slag generation is expected to increase, with the Steel Ministry pushing for the adoption of steel slag.
Road technology to support the circular economy and create jobs. The Ministry of Science & Technology and Ministry of Road Transport & Highways are actively involved in promoting the large-scale use of steel slag in road construction for a more sustainable future. Questions: 1. What partnership has ArcelorMittal Nippon Steel India (AM/NS India) formed to promote sustainable infrastructure development? 2. What technology has AM/NS India secured a coveted license for from CSIR – CRRI? 3. How do the processed steel slag aggregates produced by AM/NS India compare to natural aggregates in terms of durability and cost-effectiveness? 4. What advantages do steel slag roads offer over traditional construction materials? 5. How does the steel slag road technology align with Hon’ble Prime Minister Narendra Modi mission of ‘Waste to Wealth’?
In a landmark development for green construction in India, ArcelorMittal Nippon Steel (AM/NS India) has become the first company to receive a technology license from the Council of Scientific and Industrial Research – Central Road Research Institute (CSIR-CRRI) for the use of Steel Slag Aggregates in road construction. This breakthrough aligns with India’s growing push toward sustainable infrastructure development and circular economy practices. The technology enables the reuse of steel slag—a waste by-product from steel manufacturing—as a viable material in building durable roads...(ACI).
About the CSIR-CRRI Steel Slag Aggregates Technology
CSIR-CRRI has developed this innovative technology after years of research on converting industrial by-products into value-added construction materials. The steel slag, after undergoing specific processing, becomes suitable for replacing natural aggregates in road layers such as base, sub-base, and bituminous layers. The technology not only offers a sustainable alternative but also enhances the structural strength and longevity of roads.
Benefits of Steel Slag Use in Roads
The use of steel slag aggregates significantly reduces the demand for natural stones, helping in the conservation of natural resources and lowering the carbon footprint of road projects. In addition, steel slag offers superior mechanical properties such as high angularity, resistance to abrasion, and better interlocking capacity, which leads to longer-lasting roads. This approach also contributes to better management of industrial waste and reduces the burden on landfills.
AM/NS India’s Leadership in Industrial Innovation
As part of its commitment to green steel and sustainable business practices, AM/NS India has been actively exploring innovations in waste management and energy efficiency. By securing the first license from CSIR-CRRI, the company has once again demonstrated leadership in adopting cutting-edge, eco-friendly technologies. This initiative supports the company’s broader ESG goals and aligns with India’s national climate action commitments. (AM/NS)
Implications for Road Construction and Infrastructure Policy
This collaboration marks a turning point in India’s road construction sector. With the National Highways Authority of India (NHAI) and other agencies looking for green alternatives, the adoption of steel slag could soon become a nationwide practice. Roads built using this material have already been tested in pilot projects and shown superior performance. The Ministry of Road Transport and Highways (MoRTH) is also encouraging the use of such waste-derived materials through policy updates.
Q1. What is the new technology licensed to AM/NS India?
CSIR-CRRI’s steel slag aggregates technology for road construction.
Q2. Why is this technology important?
It recycles steel slag into strong, eco-friendly road material.
Q3. Who developed the technology?
The Council of Scientific and Industrial Research – CRRI.
Q4. How does it help the environment?
Reduces use of natural aggregates and manages steel waste.
Q5. Is this technology used in India before?
It was tested in pilots; AM/NS India is the first to license it commercially.
