GS Paper - 2 (Infrastructure)

Steel Minister Ram Chandra Prasad Singh inaugurated a six-lane highway in Surat made of steel slag -- a first for the country. The road constructed using 100 per cent steel-processed slag is a real example of converting "waste into wealth" and improving sustainability of steel plants. Slag is a by-product of steel manufacturing.


  1. Use of such material in road construction shall not only increase its durability but also help in reducing the cost of construction as slag-based materials have better properties than natural aggregates.
  2. The use of steel slag in road construction will also address the shortage of natural aggregates in the country.
  3. The production of steel slag in India from different process routes is likely to increase by 2030.
  4. The road has been jointly made with the Central Road Research Institute (CRRI) -- a laboratory of the Council of Scientific and Industrial Research (CSIR), ArcelorMittal Nippon Steel (AMNS) India.
  5. Slag is a by-product which comes out during manufacturing of steel through three processes, namely basic oxygen furnace (BOF) route, electric arc furnace (EAF) and induction furnace (IF).
  6. This is a breakthrough for the industry as far as utilisation of slag is concerned. Slag was being used only for only landfilling.