Steel Slag Roads: Techno-economic and environmental benefits

21 Sep 2022 CW Team

A robust infrastructure network is a prerequisite to accelerating economic growth in any country. As India is poised to become an economic powerhouse, the Government of India has also embarked on a massive infrastructure development programme under the PM Gati Shakti Scheme, National Highway Development Programme and Bharatmala projects. India has the world’s second-largest road network in terms of length. Every year, for the maintenance and construction of this vast road network, around 1.2 billion tonne of natural aggregates are required. This huge demand is met through unsustainable quarrying and mining of stone aggregates in many areas, which is causing a serious ecological impact on natural topography, flora and fauna. Sustainable development requires reduced reliance on perishable natural resources.

India is the world’s second-largest steel-producing country and accounts for the world’s second-largest steel slag generation as solid waste. Most steel slag after metal recovery ends up in the waste dump or as landfill material. The utilisation of steel slag varies from 0 to 50 per cent on a plant-to-plant basis depending upon the course of action taken by steel plants for disposal and utilisation. Under a major research projectsponsored by the Ministry of Steel along with Arcelor Mittal Nippon Steel (AM/NS) India, CSIR-CRRI has developed steel slag valorisation technology for the conversion of steel slag as roadmaking aggregate. Processed steel slag aggregates developed at the AM/NS India steel plant in Hazira have been successfully utilised in the construction of a 1-km,six-lane bituminous steel slag road connecting NH-6 to Hazira Port in Surat, Gujarat.

To read the full interview, CLICK HERE.

Infrastructure Transport

16 Sep 2025

Metro Line 2B Phase 1 to Boost Realty in Mumbai’s Eastern Suburbs

Mumbai’s real estate sector is set for a major boost as Phase 1 of Metro Line 2B, between Mandale and Diamond Garden, nears completion. The Mumbai Metropolitan Region Development Authority (MMRDA) has confirmed that mandatory rectifications are done, and inspections by the Commissioner of Metro Railway Safety (CMRS) have been carried out. The 5.39-km stretch with five stations forms part of the larger DN Nagar–Mandale corridor, designed to ease congestion and improve east–west connectivity. Passenger operations are expected by December 2025, with the full line slated for 2027. ..

WattPower wins Best Inverter award at Global Solar Expo 2025

WattPower, a leading renewable energy solutions provider, has won the award for “Best Inverter in the Utility Segment” at the Global Solar Expo 2025. The recognition underscores the company’s commitment to delivering reliable, high-performance and future-ready solar solutions for large-scale projects. At the forefront of utility-scale solar, WattPower manufactures advanced string inverters that directly feed power into the Indian grid. With robust technology, high-quality components and comprehensive product lifecycle support, its solutions stand among the most sophisticated in the ..

Awfis delivers 67,000 sq. ft. innovation hub for eBay in Bengaluru

Awfis Space Solutions, India’s largest flexible workspace provider and the first publicly listed workspace solutions platform, has partnered with eBay to establish a 67,000 sq. ft. innovation hub at Embassy Tech Village, Bengaluru. The mandate covers design, build and management of the new office, which will act as a strategic hub supporting diverse functions and accelerating eBay’s AI-first commerce strategy. The centre will focus on artificial intelligence, engineering, product development and applied research, strengthening eBay’s growth in India. Embassy Tech Village, North Beng..