Abstract: A cantilever plate connection element (1) for connecting a floor/ceiling plate.

Abstract: A column formwork for use in concrete construction is described, including a planar member 1 constituting the formwork, and at least one connecting section provided for form-fit connecting two opposing edges 3, 3? of the planar member (1) and thus for constituting a tube segment, wherein at least the connecting-section surface facing the planar member 1 exhibits a substantially constant curvature that substantially corresponds to the curvature of the tube segment.

Abstract: A cantilever plate connection element (1) for connecting a ceiling or floor plate (2) to a cantilever plate (3) has traction means, transverse force means, pressure means, a cube-shaped insulating body (4) and at least one articulation element (5) which extends through the cube-shaped insulating body (4). The articulation element (5) has a main body (6), an end section (7) on the side of the ceiling or floor plate and an end section (8) on the side of the cantilever plate. The main body (6) is substantially enclosed in the cube-shaped insulating body (4) while the end sections (7, 8) project in the built-in state into the cantilever plate (3) and into the ceiling or floor plate (2). The surface of each of the two end sections (8) of the articulation element (5) has a positive curvature in at least one direction and at least one end section (7, 8) is provided with sliding means.

Abstract: A column formwork for use in concrete construction is described, comprising a planar member 1 constituting the formwork, and at least one connecting section provided for form-fit connecting two opposing edges 3, 3? of the planar member (1) and thus for constituting a tube segment, wherein at least the connecting-section surface facing the planar member 1 exhibits a substantially constant curvature that substantially corresponds to the curvature of the tube segment.

Abstract: A concrete structure having at least one concrete insert element is disclosed. The insert element has a surface with a layer of aluminum or aluminum alloy and, upon setting of the concrete, the layer of aluminum or aluminum alloy reacts at least partially with the free lime and oxygen in the concrete to form calcium aluminate, thus providing a particularly intimate and firm bond between the insert element and the concrete.