Formwork is a temporary structure used in construction to support and shape concrete until it hardens. It acts as a mold, allowing workers to pour concrete into specific shapes for walls, floors, and other structures. Formwork can be made from various materials, including wood, metal, or plastic, depending on the project requirements. Once the concrete sets and gains strength, the formwork is removed, leaving behind the finished structure. Properly designed and constructed formwork is essential for ensuring the quality and safety of the final product, as it helps maintain the desired dimensions and surface finish of the concrete.