How are curing compounds typically applied?

• A. Spraying or brushing a film-forming coating
• B. Dipping the slab in a curing bath
• C. Sprinkling dry cement on the surface
• D. Applying water with a spray bottle only

Answer: (A)

Curing compounds work by forming a protective film on the surface that locks in moisture and slows evaporation, allowing the concrete to hydrate properly. The typical way to apply this type of curing is by spraying or brushing a film-forming coating onto the freshly finished surface. This method creates an even, sealed layer that controls moisture loss during the early curing period.

Dipping the slab in a curing bath isn’t practical for concrete slabs and isn’t how curing compounds are used. Sprinkling dry cement on the surface would alter the surface in ways that don’t provide a proper curing seal. Applying water with a spray bottle represents moisture curing, but it’s a different approach and generally less controlled than applying a film-forming coating, which is designed to stay in place and protect the surface.