The surface of the concrete structure of a new construction is covered with straw/gunny bags by wetting. This is done to:

1. A. prevent fast evaporation, until hydration has proceeded well. ✓
2. B. protect the concrete structure from contamination by dust particles.
3. C. prevent development of any fungus on the surface.
4. D. give smoother and cleaner surface over cement structure.

Correct Answer: A. prevent fast evaporation, until hydration has proceeded well.

Practice more CDS General Knowledge questions