Curing compounds are used to

• A. Seal moisture to retain hydration
• B. Increase strength immediately
• C. Change color
• D. Eliminate the need for curing

Answer: (C)

Moisture retention during curing is the main purpose of applying curing compounds. They create a surface film that slows water loss from the concrete, allowing the cement to continue hydrating. This ongoing hydration is essential for achieving designed strength and minimizing shrinkage cracks. Curing compounds aren’t about gaining strength immediately, nor do they eliminate the need for curing. While some products may subtly affect surface appearance, changing color isn’t their primary function.