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Steel Slag Roads

Kumari Sonali

Steel Slag Roads:

India has developed the world’s latest Steel Road technology by using steel slag.

  • Steel slag is a byproduct of steelmaking, and is produced during the separation of molten steel from impurities in steel-making furnaces.
  • Steel slag roads are roads constructed using steel slag. Instead of discarding this waste material, it is processed and used as an aggregate in road construction.
  • The steel slag is mixed with other materials and technologies to create a durable and sustainable road surface.
  • The technology, pioneered by CSIR-Central Road Research Institute (CRRI), allows for the large-scale utilization of waste steel slag from steel plants in road construction.
  • It is part of the “Waste to Wealth” initiative and addresses environmental degradation caused by waste steel slag.
  • Steel slag roads are well-suited to India’s terrain, offering cost savings of 30% and three times the lifespan of traditional roads.
  • It is resistant to weather conditions.
  • The success of steel slag roads has been demonstrated in various projects, including in Surat, Arunachal Pradesh, and on National Highway NH-66.

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