In the E-waste or Steel Slag utilization in road bases, the main environmental benefit is
- AIt makes the road surface glow in the dark.
- BIt reduces the depletion of natural stone resources and solves the problem of industrial waste disposal.Correct
- CIt eliminates the need for any rolling or compaction.
- DIt prevents any plant growth on the road shoulders.
Solution
Concept
Use of Waste Materials in Road Construction
Formula
N/A
Step-by-step solution
1. Review the question about using e-waste or steel slag in road bases. 2. Recall that recycling industrial waste conserves natural aggregate resources and reduces landfill waste. 3. Compare with the options and select Option (b) as the correct choice.
Explanation
Using e-waste or steel slag in road construction helps conserve natural resources like stone aggregates while effectively managing and recycling industrial waste, preventing it from clogging landfills.
Shortcut
To remember the main environmental benefit of using industrial waste in road bases, use the rule "Save Stone, Reuse Waste": - Save Stone: Conserves natural rock and stone aggregate resources from depletion. - Reuse Waste: Redirects industrial waste and slag away from landfills for productive use.
Common mistake
A common mistake is selecting Option C by assuming that using industrial waste like steel slag or e-waste eliminates basic construction procedures such as rolling and compaction. In reality, waste materials still require standard mechanical compaction to achieve the necessary density and structural load-bearing capacity. Another mistake is selecting Option A or D by confusing environmental benefits with unrealistic secondary effects.
Correct answer: B) It reduces the depletion of natural stone resources and solves the problem of industrial waste disposal.