The secondary reinforced controlled crack joint formwork element for floor/ceiling slabs serves for targeted crack formation along the crack introducer.
Crack formation as a result of weakening of the concrete cross-sections takes place due to the integrated separation layer at 1/3 of the component thickness/cross-section thickness.
In the case of watertight joints, the formwork element comprises a Injection Hose, by means of which the joints can be specifically sealed by subsequent injection.
The reinforcement overlap between the first and second concreting section is ensured by the installation of the formwork element between the upper and lower reinforcement layer.