Steel slag can be the material for which of the following?

Steel slag is a byproduct of steel making, created when molten steel is separated from impurities in steel-making furnaces.

Option 1 is correct: Steel slag is used as an ingredient in asphalt roads, acting as an aggregate (like iron, sand, gravel, or crushed rock) bound together by bitumen.

Option 2 is correct: In the agricultural sector, steel slags can correct soil acidity and provide nutrients to plants, acting as a silicate fertilizer (providing silicon).

Option 3 is correct: Steel slag can be used as a raw mix component (up to 10%) in the manufacture of cement clinker. It can also replace granulated blast furnace slag (up to 10%) in the manufacture of Portland Slag Cement. It has also been used to treat acidic water discharges from abandoned mines.

Therefore, all options are correct.

Sources:

• [Source: (Information compiled from various sources)]