What is the primary purpose of form release in concrete construction?

The primary purpose of form release in concrete construction is to allow safe removal of the form from the casting. Form release agents are applied to the inner surface of forms used in pouring concrete; they create a barrier between the concrete and the formwork. This barrier minimizes adhesion, ensuring that the concrete does not stick to the form.

By using a form release agent, contractors can achieve a clean separation of the form when it is time to remove it, reducing the risk of damaging the concrete. It ensures that the concrete retains its shape and structural integrity while making the extraction process more efficient and safe. Without proper form release, the concrete could bind to the form, leading to complications during deconstruction, potential damage to the concrete surface, or even breakage.

The other options, while relevant to the broader context of concrete work, do not accurately represent the primary function of form release. Enhancing the finish, increasing curing time, or changing color are not primary purposes of form release, but may be associated with different aspects of the concrete finishing process.