METHOD FOR PRODUCING A nonmetallic tendons with a periodic surface and tendons With periodic surfaces

摘要

FIELD: construction.;SUBSTANCE: method to manufacture a reinforcement element with periodic surface includes placement of cords made of lengthy mineral fibres with thickness of 5-50 mcm and/or threads from them, in the form of a tape with density in the cord section equal to 2-20 K tex, they are arranged in longitudinal direction and twisted into a rope by single or double twisting. The reinforcement element is made in the form of a rope of tape cords. Cords are made of fibres with thickness of 5-50 mcm and/or threads from them, in the form of a tape with density in the cord section equal to 2-20 K tex, and tensile strength of 0.6-2.0 GPa. The area of rope section is not more than 1.2 nA, where n - number of cords, A - area of section of one cord. The rope may be twisted from cords impregnated with a polymer binder, or the twisted rope is impregnated with a cement or polymer binder, at the same time the area of twisted rope section shall not exceed the total area of cords by more than 20%.;EFFECT: development of a high-technology flexible non-metal reinforcement element for non-stressed and pre-stressed concrete structures.;12 cl, 2 dwg