Steel slag can be the material for which of the following?
1. Construction of base road
2. Improvement of agricultural soil
3. Production of cement
Select the correct answer using the code given below:
Steel slag can be the material for which of the following?
1. Construction of base road
2. Improvement of agricultural soil
3. Production of cement
Select the correct answer using the code given below:
Answer:
(d)
Non-traditional
Steel slag, a by-product of steel making, is produced during the separation of the molten steel from impurities in steel-making furnaces. It is used in various activities such as in road construction, these are the preferred aggregates as they harden well, enabling a thinner layer of pavement than what can be achieved with crushed stone aggregates. So, statement 1 is correct. Benefits of using steel slag for crops: Slag application favors the increase of pH and the availability of nutrients such as Ca, Mg, and Si in the soil, which leads to the increase in the absorption of these elements by the plant, favoring the growth and yield of the crops. So, statement 2 is correct. Steel-slag can be used to produce energy-saving cement by co-grinding with OPC clinker and blast furnace slag. It can replace Portland cement in various applications and is especially suitable for projects where a low heat of hydration is required. So, statement 3 is correct. Therefore, the correct answer is (d).