Which option describes an acceptable curing method for tilt-up panels?

• A. Dry curing with forced air.
• B. Soak the panels in water indefinitely.
• C. Applying a liquid membrane compatible with the bond breaker, with attention to time, temperature, and moisture.
• D. Coating with paint to seal the surface.

Answer: (C)

Maintaining moisture during curing is essential for tilt-up concrete to develop the required strength and minimize cracking. The best approach is applying a liquid membrane that forms a moisture-retaining film and is compatible with the bond breaker, while also taking into account time, temperature, and humidity. This method provides a controlled cure without interfering with bond-breaker removal or surface finishing. Dry curing with forced air can dry the surface too quickly and may not ensure adequate moisture; soaking panels in water indefinitely is impractical and can cause issues with the bond breaker and surface; coating with paint to seal the surface does not supply proper curing moisture and can trap moisture, leading to poor cure and surface defects.