What distinguishes wet curing from membrane curing?

• A. Membrane curing uses surface sealers or films to prevent moisture loss.
• B. Wet curing keeps moisture on the surface with water or mist.
• C. Wet curing uses chemical accelerators to cure faster.
• D. Membrane curing requires continuous water application.

Answer: (B)

The key idea is how curing methods manage moisture loss from the concrete as it hardens. Wet curing keeps the surface moist by applying water directly or maintaining a damp surface with mist, wet burlap, or similar methods, so hydration can continue actively. This approach focuses on providing ongoing moisture to the concrete, which helps strength gain and minimizes shrinkage early on.

Membrane curing, in contrast, uses surface sealers or films to seal in moisture, forming a barrier to evaporation rather than adding water. That’s why the statement about wet curing described as keeping moisture on the surface with water or mist is the best fit.

The other ideas mix in aspects of membrane curing or introduce concepts not specific to wet curing—films that prevent moisture loss, or the notion of continuous water application being tied to membrane curing, or mentioning chemical accelerators, which aren’t the curing method itself.