Recently, the union Minister of State (Independent Charge) for Science and Technology advocated wider adoption of steel slag–based road construction and repair technology, particularly in hilly and Himalayan regions.
About Steel Slag:
Steel slag is an industrial byproduct obtained from the steel manufacturing
It is produced in large quantities during steel-making operations that use electric arc furnaces.
It can also be produced by smelting iron ore in a basic oxygen furnace.
Composition: Primarily, slag consists of calcium, magnesium, manganese and aluminium silicates and oxides in various combinations.
The cooling process of slag is responsible mainly for generating different types of slags required for various end-use consumers
Applications of Steel Slag:
Environmental Remediation: It has found use as a barrier materialremedy for waste sites where heavy metals tend to leach into the surrounding environment.
Steel slag forces the heavy metals to drop out of solution in water run off because of its high oxide mineral content.
It has been used successfully to treat acidic water discharges from abandoned mines.
It can replace coarse aggregate due to a higher impact and crushing strength, better anti-skid capacity.
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