Enhanced Bond Reinforcing Steel Bars with Surface Texturing

Surface-modified steel fibers for ultra-high performance concrete that enhance bonding and mechanical properties. The fibers are modified through a silane coating process followed by a silica composite treatment, which improves fiber-matrix interface and mechanical performance. The modified fibers achieve improved flexural and compressive strength compared to conventional fibers, enabling enhanced durability and performance in high-performance concrete applications.

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A reinforced concrete structure comprising short fiber bars with enhanced bonding properties. The bars are made from continuous, parallel fibers embedded in a cured matrix, with an average length of 20 mm to 200 mm and an average diameter of 0.3 mm to 3 mm. Each bar features a helical wound configuration with indents extending circumferentially, providing improved bonding characteristics through controlled fiber alignment and surface texture. The bars can be used for repairing cracked concrete structures, where conventional steel reinforcement is insufficient due to cracking. The reinforced structure maintains its post-cracking strength compared to conventional reinforced concrete.

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Concrete-filled steel tube arch frame with enhanced structural integrity through multi-scale textured surface reinforcement. The frame features strategically positioned protruding members that integrate with the steel pipe arch and concrete, creating a multi-scale textured surface. The protruding members are specifically designed to provide enhanced bonding between the arch and concrete, while the steel pipe arch itself is reinforced with a surface roughened finish. The multi-scale textured surface configuration enables improved load transfer between the arch and concrete, significantly enhancing the structural integrity of the concrete-filled steel tube arch frame.

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Concrete reinforcement comprising a steel fiber with a surface featuring a streaked pattern. The streaks are arranged in a specific pattern along the fiber's longitudinal axis, with the longitudinal axis remaining unchanged. This unique surface treatment enhances the fiber's bond with the concrete matrix while maintaining the fiber's original longitudinal orientation.

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Concrete column with a unique surface grain pattern that enhances bonding between steel reinforcement and concrete. The column's surface features a convex grain structure that creates a more effective interface between the steel reinforcement and concrete, significantly improving the bond strength compared to conventional profiles. This unique surface pattern enables enhanced stress transfer between the steel and concrete, enabling improved structural performance in reinforced concrete columns.

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Discontinuous longitudinal ribbed steel bar with improved concrete bonding. The bar features intermittent longitudinal ribs and a unique longitudinal rib configuration that incorporates transverse ribs between the ribs. The transverse ribs are strategically positioned to enhance concrete adhesion while maintaining structural integrity. This design approach enables controlled reinforcement of reinforced concrete members through the use of discontinuous longitudinal ribs, reducing the risk of concrete damage during loading.

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Ribbed steel bar with staggered transverse ribs that improves the distribution of bonding force between the steel surface and concrete. The bar features transverse ribs that are staggered at an angle between the transverse ribs, creating a more uniform distribution of the bonding force. This design addresses the conventional problem of uneven bonding force distribution between the steel surface and concrete, particularly in reinforced concrete structures where the lateral ribs are unevenly distributed.

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Coated structural insert members for reinforced concrete that enhance bonding and durability through textured surface treatments. The coated members incorporate a textured powder coating composition with functionalized fillers, which provides improved adhesion to concrete while maintaining corrosion resistance. The textured surface creates a continuous interface between the rebar and concrete, preventing water penetration and promoting mechanical interlocking. The textured coating can be applied over a corrosion-resistant base layer, enabling the use of standard uncoated rebar in reinforced concrete applications where high tensile strength is not required.

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Reinforcing bar for concrete that enhances its mechanical properties through controlled expansion and surface treatment. The reinforcing bar incorporates a deformed geometry that creates a mechanical interface with the surrounding concrete, while the surface is processed with ribs to improve bonding. The bar's expansion characteristics are tailored to match the concrete's thermal expansion rate, ensuring minimal stress generation and preventing cracking. The reinforced concrete structure achieves improved durability through the protective passivation layer formed on the steel surface by the alkaline environment of the concrete.

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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 reinforced concrete structure with improved anchoring performance through a novel periodic profile design. The profile features a unique cross-sectional shape that optimizes the distribution of transverse reinforcement ribs while maintaining adequate support for the concrete. The profile's geometry ensures that the longitudinal ribs maintain their structural integrity even when the concrete reaches its ultimate strength, while the transverse ribs maintain their mechanical properties throughout the concrete's working stages. This design addresses the conventional limitations of periodic profiles by balancing the reinforcement's distribution across the concrete's cross-sections.

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Adhesion-enhanced release reinforcement for concrete structures that significantly improves bond strength throughout the length of the reinforcement. The reinforcement features a unique cross-sectional design with strategically angled nodes that distribute stress evenly across the reinforcement. The nodes are formed by ribs that divide the cross-section into upper and lower sections, with each section having a uniform cross-sectional area. This design ensures consistent bond strength across the reinforcement, particularly in areas where conventional reinforcement joints are prone to stress concentration. The nodes also feature a controlled angle of 15 degrees between the reinforcement shaft and the node, which helps to distribute stresses more evenly. The reinforcement maintains a constant cross-sectional area throughout its length, ensuring consistent bond strength across the entire length of the reinforcement.

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Reinforcing bar for concrete structures with improved adhesive strength through optimized profile design. The profile features alternating longitudinal ribs and transverse ribs that are specifically engineered to enhance the bonding between the reinforcing bar and concrete. This unique profile configuration addresses the conventional ratio-based design of conventional rebars, which can compromise the bond between the reinforcing bar and concrete. The profile's geometrical parameters are optimized to achieve a more effective bond, leading to improved concrete durability under axial tension.

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