What is the purpose of bond breaker in tilt-up construction?

• A. To prevent bonding between concrete surfaces
• B. To strengthen bonding
• C. To accelerate curing
• D. To add color

Answer: (A)

Bond breaker is used on surfaces that will contact fresh concrete so they don’t stick together. In tilt-up construction, panels are poured on the ground and then raised into place, often forming against other concrete surfaces or temporary forms. Applying a bond breaker between those surfaces prevents adhesion, allowing the forms to be removed cleanly and the panels to separate without damaging the concrete or leaving surface marks. It’s not about strengthening bonding, speeding up curing, or adding color—the purpose is to prevent bonding between concrete surfaces.