MULTI-LAYER STRUCTURAL ELEMENT Russian patent published in 2014 - IPC E04C1/40 E04C3/28 F16L9/16 

FIELD: construction.

SUBSTANCE: invention relates to multi-layer power structural elements in the form of columns, towers, beams, grooves, etc., used in construction. A multi-layer power structural element comprises inner and outer layers, made by winding of reinforcing threads or rovings onto a mandrel, impregnated with a polymer binder with specified protective properties to form a solid layer, and a structural layer placed between them and stiffly connected to them, made of previously prepared volume elements, providing for adhesion of inner and outer layers. The previously prepared volume elements are made in the form of meshed longitudinal power elements with transverse links formed from reinforcing threads or rovings impregnated by a polymer binder, and the formed cavity between the external and internal layers connected by the structural layer serves to introduce a filler. Also a version of a multi-layer element is described.

EFFECT: increased reliability of an item due to provision of higher adhesion of layers with simultaneous provision of non-combustibility of protective layers, higher strength and heat resistance, increased speed of manufacturing of a finished item.

19 cl, 1 tbl, 6 dwg