MULTILAYER CONSTRUCTION MEMBER AND METHOD OF ITS MANUFACTURE Russian patent published in 1998 - IPC

FIELD: ground construction in erection of structures featuring a high strength and durability at a relative lightness, for instance, suspended walls of industrial, civic and dwelling buildings. SUBSTANCE: multilayer construction member uses an external concrete layer reinforced by fibre, internal heat-insulating layer and stiffening ribs of concrete reinforced by fibre. The external concrete layer and the stiffening ribs are made of concrete reinforced by steel fibre, having a length-to-diameter ratio equal to 50-100 at a fibre diameter of 0.1 to 0.5 mm. The external layer is additionally reinforced by a fibrous cage containing fibres, having a length-to-diameter ratio equal to 200-600 at a fibre diameter of 0.3 to 0.5 mm. The internal layer is made of foam concrete. EFFECT: enhanced strength and durability. 14 cl, 5 dwg