COMPOSITE REINFORCEMENT Russian patent published in 2013 - IPC E04C5/07 

FIELD: construction.

SUBSTANCE: invention relates to non-metal composite reinforcement, which is applied for reinforcement of monolithic and precast concrete structures, as joints between layers in multi-layer wall structures, for reinforcement of masonries from bricks and blocks, for reinforcement of concrete floors, for reinforcement and strengthening of soil beds for roads and highways. Composite reinforcement according to the version No. 1, comprises a polymer matrix and evenly arranged reinforcing longitudinal threads (bundles of threads) of low-module and high-module fibres. At the same time the ratio of polymer matrix area to area of thread bundles shall be at least 2. The polymer matrix is made of a thermoplastic structural polymer, which is dispersely reinforced with cut glass, basalt or carbon fibre with length of 0.5-5 mm with weight content of up to 30%. Reinforcing threads from low-module and high-module fibres are arranged evenly along cross section of reinforcement. Low-module fibres are threads or rovings from glass fibre and basalt fibre, and high-module ones are carbon and aramid threads. Application of thermoplastic structural polymers as binders makes it possible during local heating of the rod to make a bend at the necessary angle without reduction of composite strength in the area of the bend. For necessary adhesion with concrete on the rod surface there are ribs made by means of moulding in process of rod manufacturing. According to the version No. 2 the composite reinforcement of the clause No. 1 is additionally coated with a fire-resistant layer made of solid sodium glass, mixed with glass microspheres and/or thermally expanded graphite.

EFFECT: increased operational reliability.

5 dwg, 1 tbl