India's first road constructed from steel slag
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.
- 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.
- The use of steel slag in road construction will also address the shortage of natural aggregates in the country.
- The production of steel slag in India from different process routes is likely to increase by 2030.
- 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.
- 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).
- This is a breakthrough for the industry as far as utilisation of slag is concerned. Slag was being used only for only landfilling.