PERIODIC PROFILE REINFORCING BAR Russian patent published in 2024 - IPC E04C5/03 

FIELD: construction.

SUBSTANCE: reinforcing bar of a periodic profile comprises a core of circular cross-section, on the surface of which there are two longitudinal projections and inclined ones: open crescent-shaped transverse projections and semi-crescent-shaped transverse projections located between them. The ratio of the height of the crescent-shaped transverse protrusion to the step between the crescent-shaped and semi-crescent transverse protrusions is 0.16-0.32 with the length of the arc of the crescent-shaped transverse protrusion outlined along the perimeter of the core in the projection plane perpendicular to the axis of the rod, amounting to 1.58-3.11 of the radius of the core rod. The height of the semi-crescent-shaped transverse protrusions is 65-130% of the height of the crescent-shaped transverse protrusions with the length of the curve obtained by the intersection of the arc of the crescent-shaped transverse protrusion with the arc of the semi-crescent transverse protrusion outlined along the perimeter of the core in the projection plane perpendicular to the axis of the rod constituting 14-50% of the length of the above-mentioned arcs of the crescent-shaped protrusion.

EFFECT: increase in the adhesion properties of the reinforcing rod with concrete and the possibility of using the rod for reinforcement in the construction of structures in seismic areas.

4 cl, 5 dwg