Our customers asked us to produce an inner forming element for elevator shafts; they already had the external elements of a mould at their disposal.
The difficulty of the demoulding process for such reinforced concrete products is that without changing the size of the core you cannot pull it out of the mould with consolidated concrete without damaging the product. This is why hollow-core forming elements should be demountable.
In this picture, you can see a split forming inner core equipped with loops for grabbing and transportation. At the customer’s request, we can also equip it with a hydraulic drive, but in this case the inner core’s elements are moved mechanically with the help of a lifting beam and a crane. The crane lifts two diagonally arranged parts of the structure to a height of about 20 cm. This reduces the cross-section of the core, which then can be removed from the inside of the elevator shaft without damaging the concrete product, and then allows to freely move the finished concrete product.
Along the lower perimeter of the core there are holes for its tying with the outer sides of the metal mould.
We will try to show you the process of forming an elevator shaft using this technology.