UPSC CDS II 2024 GK Paper

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Question : 15 of 120

Marks: +1, -0

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

prevent fast evaporation, until hydration has proceeded well
protect the concrete structure from contamination by dust particles
prevent development of any fungus on the surface
give smoother and cleaner surface over cement structure

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