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Steel Slag Roads: Techno-economic and environmental benefits

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.
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