Tensile Strength Enhancement in Reinforcement Steel

Longitudinal steel bar for reinforcement in column applications with improved buckling resistance and higher load capacity compared to conventional round cross-section bars. The bar features a non-round core with square-shaped ribs and reduced rib volume compared to conventional round cross-section bars, achieving a higher proportion of steel in the core while maintaining sufficient rib volume to maintain bond strength. This design approach enables bars with equivalent load capacity to conventional round cross-section bars but with improved buckling resistance and higher ductility.

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Ultra-high strength reinforcing bar for seismic-resistant structures that achieves exceptional seismic performance through controlled alloying. The bar combines a high carbon content (0.10-0.45 wt%), with specific alloy composition including manganese (0.40-1.80 wt%), chromium (0.10-1.0 wt%), vanadium (0.01-0.2 wt%), and copper (0.015-0.4 wt%), while maintaining optimal silicon (0.5-1.0 wt%) levels. The bar's composition enables precise control over microstructural evolution during processing, particularly through the formation of a bainite core that enhances seismic resistance.

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High-pressure and high-crack-resistant cold-rolled ribbed steel welded mesh comprising an outer frame and a connecting block, with the inner wall of the outer frame fixed with an embedded block. The connecting block has horizontal steel bars connecting the vertical steel bars, and the outer walls of the horizontal steel bars are welded with vertical steel bars. The mesh features a fixed block at the junction of the first auxiliary force rod, and a limit tooth in the connecting block.

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Building steel bar with enhanced resistance to diagonal tension. The bar comprises a main steel core with arc-shaped grooves, secondary steel bars with diameters less than the main core diameter, and a steel cladding in a hollow circular ring shape. The secondary steel bars are sandwiched between the main core and cladding, with each secondary core clamped in one of the arc-shaped grooves and connected to the cladding. This configuration provides structural reinforcement while maintaining the hollow ring cladding structure.

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A composite bar that combines the high strength and corrosion resistance of steel with the elastic modulus and high elongation of fiber-reinforced polymers (FRP). The bar comprises a steel core wrapped with continuous fibers infiltrated with resin, and the fibers are reinforced with a specific fiber orientation and fiber length distribution. The fibers are strategically positioned to achieve optimal interfacial bonding between the steel core and the FRP matrix, while maintaining controlled fiber breakage and slip behavior during concrete interaction.

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A composite reinforcement material that enables bidirectional strengthening of structural members through controlled reinforcement. The material comprises a matrix phase and a reinforcement phase, where the reinforcement phase is designed to provide both tensile and compressive strength while maintaining flexibility. This dual-directional reinforcement enables the material to effectively reinforce structural members without compromising their structural integrity, particularly in applications where conventional reinforcement methods may compromise the material's fire resistance.

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Composite reinforcing bars for concrete structures that exhibit superior mechanical properties compared to conventional steel rebar. The innovative design features a hybrid glass fiber composition with a higher modulus glass content, achieved through pultrusion processes that incorporate optimized resin formulations. The resulting composite bars achieve exceptional tensile strength, compressive strength, and shear modulus, while maintaining a high bond strength with concrete. This composite material enables effective internal reinforcement in concrete structures, particularly in aggressive environments, through shared load transfer between the reinforcing bar and concrete.

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Prestressed concrete column with enhanced hydrogen embrittlement resistance in PC steel rods for tension reinforcement. The column achieves superior embrittlement resistance through optimized reinforcement bar design, particularly in PC steel rods used for tension reinforcement. The design incorporates a specific surface treatment that maintains a critical embrittlement threshold of 90% or less throughout the reinforcement bar, enabling reliable performance under high-stress conditions.

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A ribbed steel bar for concrete structures that enhances bonding and anchoring between the steel reinforcement and concrete through a novel rib configuration. The rib design combines the conventional longitudinal and transverse ribs with a unique crescent-shaped rib pattern, which significantly improves the mechanical occlusal force between the steel reinforcement and concrete. This design enables enhanced bonding and anchoring, particularly in high-rise structures where traditional rib configurations may not suffice. The crescent-shaped rib pattern creates a more efficient mechanical interface between the steel reinforcement and concrete, thereby enhancing the structural performance of reinforced concrete structures.

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Reinforcing steel for prestressed concrete structures with enhanced ductility, achieved through a novel metallurgical process that produces high-strength, high-ductility steel with improved cold-formability. The process involves a specific combination of thermomechanical processing and controlled rolling operations that enable the production of high-strength, high-ductility steel with a yield strength of over 600 N/mm², while maintaining excellent cold-formability.

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Steel fiber for ultra-high performance concrete that combines enhanced tensile strength, improved anchoring, and enhanced corrosion resistance. The steel fibers feature a unique rebar design with tapered ends, where the diameter increases by one to three times from the middle section to the ends, providing optimal reinforcement while maintaining structural integrity. The tapered design enables controlled fiber-matrix interaction during concrete deformation, while the corrosion-resistant surface treatment ensures durability. This innovative fiber design enables ultra-high performance concrete to achieve higher tensile strength while maintaining its bond with the reinforcing steel, with enhanced strain capacity and resistance to cracking.

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Steel fiber for ultra-high performance concrete that combines enhanced tensile strength, improved anchoring properties, and enhanced corrosion resistance. The steel fiber features a unique curved structure with gradually increasing diameters from the ends to the center, with a surface treated with an anticorrosive layer. This design configuration enables the steel fiber to maintain its high tensile strength while simultaneously providing optimal anchoring to the cement matrix. The anticorrosive coating protects the fiber from environmental degradation. The fiber's curved shape and surface treatment enable controlled crack propagation while maintaining the fiber's tensile performance, enabling the formation of a stable composite material with superior tensile properties compared to conventional fibers.

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Steel reinforcing structure for concrete incorporates spiral tie elements integrated into the reinforcing bar configuration. The spiral ties are arranged in pairs, with each pair forming a continuous spiral around a common reinforcing bar. This spiral configuration enables the formation of a single, continuous reinforcement system with improved mechanical properties. The spiral ties can be connected to either the reinforcing bar or the common bar through welding, bending, crimping, or chemical bonding.

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A single-touch rebar coupler that eliminates the need for multiple assembly steps by providing a gripping mechanism that actively holds the rebar in place. The coupler features a hollow body with a guide screw that creates a precise clamping force on the rebar, eliminating the need for manual tensioning and minimizing rebar displacement. The gripping mechanism is integrated into the coupler body, with a specially designed inner surface that actively engages the rebar during connection. This single-touch solution enables rapid, efficient, and reliable rebar coupling, while maintaining high tensile strength and preventing rebar shear.

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Prefabricated steel mesh for concrete structures featuring a unique composite reinforcement system. The mesh comprises a frame body with interconnected reinforcing bars, including a primary mesh unit, secondary mesh unit, third mesh unit with parallel longitudinal members, and fourth mesh unit with a cable-stayed steel bar. The mesh incorporates transverse prestressing bars and longitudinal prestressing bars within the frame, providing enhanced seismic performance while maintaining structural integrity.

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A discontinuous longitudinal ribbed steel bar with intermittent longitudinal ribs that enhances the cohesive force between the steel and concrete. The bar features a conventional longitudinal rib configuration interrupted by intermittent longitudinal ribs, where the ribs are spaced at intervals that vary between 0.5 to 2.5 mm. This intermittent rib pattern creates a more uniform distribution of stress across the bar, particularly in areas where the concrete is most susceptible to damage. The intermittent ribs also provide a more controlled release of stress, reducing the likelihood of premature concrete cracking. The bar's unique rib pattern enables improved bond between the steel and concrete, resulting in enhanced durability and reduced maintenance requirements.

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A composite bar comprising a reinforcing bar and a wrapping layer, where the wrapping layer is made of a fiber-reinforced polymer. The composite bar provides exceptional strength, modulus, corrosion resistance, and elongation properties, making it a superior replacement for traditional steel and wire components in construction and bridge structures. The wrapping layer integrates the reinforcing bar and wrapping material into a single, continuous structure, eliminating the need for separate components. This design enables precise control over fiber orientation, wrapping configuration, and material properties, resulting in optimized performance and reduced material waste.

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A steel cage for wind turbine towers that enhances structural integrity through a reinforced cage design. The cage comprises a primary cage with transverse and longitudinal steel bars that are connected in a specific pattern to form a cage-like structure. The cage's primary cage is reinforced with high-strength steel bars, while the secondary cage is formed by connecting the primary cage's longitudinal bars. This cage design combines the structural strength of the primary cage with the improved fatigue resistance of the secondary cage, enabling wind turbines to operate at higher wind speeds while maintaining structural integrity.

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Hybrid fiber reinforced concrete steel wire reinforcement structure that combines the benefits of both fiber-reinforced concrete and steel wire reinforcement. The structure comprises a concrete beam with an external steel mesh reinforcement, where parallel steel wires are embedded within the mesh. The mesh is reinforced with U-shaped steel wires that connect to the mesh corners, forming a continuous reinforcement system. This hybrid approach integrates the mechanical properties of both fiber-reinforced concrete and steel wire reinforcement, enabling improved load-bearing capacity and stiffness while maintaining cost-effectiveness and environmental sustainability.

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Seismic reinforcement method for high-strength steel that enhances ductility and yield strength while maintaining cost-effectiveness. The method involves a multi-stage process of refining steel composition, heat treatment, and micro-alloying to achieve the desired properties. The refined steel undergoes a series of controlled cooling and quenching processes to optimize microstructure and mechanical properties. The final product is then tempered and quenched to achieve the desired strength and ductility characteristics for seismic reinforcement applications.

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