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Steel slag road

Date: 05 April 2022 Tags: Miscellaneous


A road has been built in Surat using processed steel slag (industrial waste), becoming first city in the country to get such a road.



  • The unique project is a part of initiative of the Waste to Wealth and Clean India Campaign.

  • The steel slag road is just a kilometre long stretch of the six-lane public road in Hazira industries. The construction started by converting mounds of steel waste into steel slag aggregate. 

  • The road will be used by heavy-duty vehicles of multinationals located in the industrial estate on the outskirts of Surat.



  • Council of Scientific and Industrial Research (CSIR)

  • Central Road Research Institute (CRRI)

  • Union Ministry of Steel

  • NITI Ayog

  • ArcelorMtttal-Nippon Steel (AM/NS



  • The construction cost of the processed steel slag road is 30 per cent cheaper than existing methods.

  • The thickness of road is 30 percent less than normal ones but its durability is way longer than the conventional roads.


Process of construction

  • The slag is an impurity generated from a steel furnace in the form of molten flux material. It is then poured into slag pits for cooling.

  • It is then developed into steel slag aggregates and used instead of natural aggregates generally used in road construction.


Choosing the location

  • The Hazira road is located close to AM/NS steel plant for procuring steel slag. It also has continuous heavy traffic for studying vehicle load.

  • The stretch was in bad condition due to heavy loaded traffic of trucks moving towards and back from the port. The area is also vulnerable to heavy monsoons.



  • Steel slag roads ensure sustainable use of waste. It will reduce GHG emissions and carbon footprint in road construction activity.

  • The pollution caused by steel slag waste can be reduced by using them in construction of roads. Destruction of forests for mining natural aggregates can be avoided.

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