PLASTIC ROD FOR REINFORCEMENT OF THE CONCRETE Russian patent published in 2006 - IPC C04B26/16 E04C5/07 

FIELD: construction materials industry; production of the plastic rods for reinforcement the concrete construction products.

SUBSTANCE: the invention is pertaining to the field of production of the construction materials, in particular, to manufacture of the plastic rods made out of the mineral fibers impregnated with the binding agent, which may be used as the reinforcement bars of the construction designation for reinforcement of the three-layered wall constructions, the monolithic concrete and precast structures, in the structural components of the buildings in the form of the separate rods, for reinforcement of the buildings and structures foundations grounds, etc. The technical result of the invention is the increased fire-resistance and heat resistance of the rod used for reinforcement of the concrete, simplification of the process of its manufacture at conservation of the rather high strength properties with the increased alkali resistance, reduction of the power inputs used for the binding agent due to the significant decrease of the temperature of the thermal treatment. The problem is being solved due to the fact that the rod made out of the fibrous roving impregnated with the binding agent. In capacity of the binding agent it has the hybrid binding agent containing polyisocyanate adhesive and sodium liquid glass with the modulus of 2-5. At that the curing is exercised by the step-by-step temperature mode: 1 stage: 65-80°C, 2 stage: 90-100°C, by pulling the fibrous roving impregnated with the binding agent through the chamber of the polymerization. At that the ratio of the fibrous roving and the binding agent is 65-85:15-35 mass % accordingly.

EFFECT: the invention ensures the increased fire-resistance and heat resistance of the rod used for reinforcement of the concrete, simplification of the process of the rod manufacture at conservation of the rather high strength properties with the increased alkali resistance; reduction of the power inputs used for the binding agent due to the significant decrease of the temperature of the thermal treatment.

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