LEAVE-IN-PLACE FORM Russian patent published in 2014 - IPC E04B2/86 E04C1/00 

FIELD: construction.

SUBSTANCE: leave-in-place form comprises two oppositely arranged slabs, an external one from heat insulation material and an internal one from concrete, attached to each other and forming a space between each other for filling with a fluid material, capable of hardening. The internal slab of concrete is made as reinforced and comprises reinforcing elements of two types, at the same time reinforcing elements of the first type are made as V-shaped in the cross section from bent mesh and are installed in parallel and at the identical distance from each other and provide for placement of reinforcing elements of the second type at the identical distance from each other and fixation parallel to them, and the reinforcing elements of the second type represent spatial reinforcing elements made of three longitudinal rods and two rods bent with a V-shaped zigzag. Bent rods are simultaneously connected by tops to one longitudinal rod, and by other tops - to two other rods with formation of reinforced frames of prismatic shape. Reinforcing elements of the first type are made as protruding from the concrete slab and providing for connection and fixation of the external slab to it, being made of heat insulation material and pierced by glass plastic rods with fixators providing for connection and fixation of a mesh to the rear surface of the slab from heat insulation material, and the mesh is made as capable of connection of reinforcing elements of the first type to it.

EFFECT: simplified usage of this device in performance of construction works, provided by absence of complicated operations in performance of assembly or facing works, no transfer of temperature effects inside a concrete structure, exclusion of local freezing and formation of dew point on steel reinforcement inside concrete.

3 cl, 5 dwg