Image: Reinforced concrete sandwich wall - bauwion
The three-shell reinforced concrete sandwich walls are completely prefabricated in the precast plant and delivered to the construction site in elements. The two reinforced concrete panels are connected to each other via stainless steel anchors. To reduce constraints in the system, lanyards such as composite needles (deformable) are used in combination with the support anchors. Due to the high weight of the elements, the production is often made of structure-tight lightweight concrete, in which lighter aggregates are used with otherwise the same recipe. The wall panels can be arranged floor by floor via brackets between, in front of or behind the supporting structure of a building, or placed directly on top of each other as load-bearing components. The inner shell is usually the load-bearing layer. The facing shell should not be less than 7 cm thick, the base course 12 cm thick. The core insulation ranges between 6 and 24 cm, depending on the requirements and the choice of insulation material. In perforated façades, recesses for doors and windows are also already taken into account in the formwork. As exposed concrete surfaces, the surfaces offer a wide range of design options for the external appearance of the façades or for the interior effect of the rooms.
Source: bauwion
