What is used on concrete forms to facilitate removal after curing?

• A. Form releasing agent
• B. Release wax
• C. Parging coat
• D. Water

Answer: (A)

Formwork release is what lets concrete be stripped from its mold after it cures. A form releasing agent is applied to the inside of the form to create a slippery barrier that reduces adhesion and friction between the concrete and the form. This lets the form come away cleanly, protecting the surface of the concrete and extending the life of the form. Release wax is a specific type of releasing agent used on some forms, but the general term for what’s used on concrete forms is a form releasing agent. A parging coat is a finish for masonry surfaces and doesn’t aid in releasing the form, and water isn’t used to facilitate release.