COMPOSITE REINFORCEMENT Russian patent published in 2014 - IPC E04C5/07 

FIELD: construction.

SUBSTANCE: composite reinforcement has harnesses made of fibres, impregnated with resin, the harnesses are interconnected by twisting them around each other and fixation in this position by the cured resin, recesses are formed between the coils of the harnesses, fibres of each harness are stretched in the longitudinal direction of each coil, pressed against each other and stranded between each other around the longitudinal axis of the harness, so that they form a common spiral adjoining a layer from the cured resin and the fibres of two harnesses in the zone of their contact along the entire length of the reinforcement. In the cross section the reinforcement is formed by a pair of harnesses contacting each other via the adjoining layer of harnesses, each of which has an oval shape in the cross section, the area of the cross section of each harness is selected within 40-49 % from the total area of the cross section of the reinforcement, the area of the cross section of the adjoining layer is selected within 20-2.0 % from the total area of the cross section of the reinforcement.

EFFECT: increase of the reinforcement strength and strength of its connection to the concrete.

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