The Adhesion between Concrete and Formwork

The bonding of concrete to formwork influences the quality of the concrete surface. The theory of bonding is investigated by scientists and is described. The bond strength of the hardened concrete to the surface of the formwork depends on many parameters, from which the most important are the material of the formwork and the parting agents, the roughness of the surface, the type and quality of the concrete, the way and time of compaction and the curing conditions. The bond strength was evaluated — besides many other parameters — for customary formwork materials and new plastic materials.