Basalt fiber bar

Abstract

The utility model discloses a basalt fiber bar and relates to the field of building materials, the fiber bar comprises a middle core layer composed of a plurality of core rods, a basalt fiber layer located outside the middle core layer and wrapping the middle core layer and a metal net layer clamped in the basalt fiber layer, and the middle core layer comprises a plurality of high polymer material core rods and a plurality of steel core rods; the basalt fiber layer is formed by mixing epoxy resin with short basalt fibers; a plurality of V-shaped ribs are convexly arranged on the outer surface of the basalt fiber layer. A plurality of mandrels and a metal net layer are introduced into the center of the fiber bar, and basalt fibers and epoxy resin are combined and cured to form a main body structure. By means of the design, the overall structural strength of the rib is improved, meanwhile, good mechanical performance and corrosion resistance are kept, meanwhile, the use amount of basalt fibers is reduced, the complexity of the production technology is reduced, and therefore the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of building materials, and in particular to a basalt fiber reinforcement. Background Art

[0002] In existing buildings and infrastructure, traditional steel bars are widely used as the primary reinforcement material in concrete structures. Due to their excellent mechanical properties and good bonding with concrete, steel bars can significantly enhance the compressive and tensile strength of concrete. However, despite their high strength and low cost (market price is approximately 3,500 to 4,000 yuan per ton), steel bars have significant limitations in corrosion resistance. In particular, they are susceptible to corrosion in harsh environments such as those with high salinity and high humidity. This corrosion can lead to a decrease in the overall strength of concrete structures and, in severe cases, even affect the safety of buildings. Therefore, developing a reinforcement material with improved corrosion resistance has become an important research direction in the construction field.

[0003] To address the insufficient corrosion resistance of traditional steel bars, research on composite rebars has gained increasing attention in recent years. Basalt fiber rebar, due to its high strength, corrosion resistance, and lightweight properties, has become a highly sought-after alternative. Made by mixing and curing basalt fibers with epoxy resin, basalt fiber rebar exhibits excellent corrosion resistance and mechanical properties, particularly in humid and corrosive environments. However, the current production cost of basalt fiber rebar is high, with a 6mm basalt fiber rebar price of approximately 40,000 yuan per ton, significantly higher than that of traditional rebar. This high cost has hindered the practical application of basalt fiber rebar in practical engineering projects, particularly in large, cost-sensitive infrastructure projects.

[0004] The high cost of basalt fiber rebar is primarily due to the high material costs involved in its production. Therefore, reducing production costs while maintaining the excellent performance of basalt fiber rebar has become a key challenge in current research. Utility Model Content

[0005] This application aims to overcome at least one shortcoming of the existing technology by providing a basalt fiber rebar that incorporates multiple cores and a metal mesh layer at its center. The basalt fibers are then cured with epoxy resin to form the main structure. This design not only improves the overall structural strength of the rebar but also reduces the amount of basalt fiber used, while maintaining good mechanical properties and corrosion resistance, thereby reducing the complexity of the production process and thus lowering production costs.

[0006] To achieve the above-mentioned objectives, the present application discloses a basalt fiber rebar, which includes a core layer composed of multiple core rods, a basalt fiber layer located outside the core layer and covering the core layer, and a metal mesh layer sandwiched within the basalt fiber layer, wherein the core layer includes multiple polymer material core rods and multiple steel core rods; the basalt fiber layer is composed of short basalt fibers mixed with epoxy resin; and the outer surface of the basalt fiber layer is protruded with a plurality of V-shaped ribs.

[0007] In some embodiments, the metal mesh layer includes at least one coiled metal mesh.

[0008] In some embodiments, the polymer material thin rods in the core layer and a plurality of steel thin rods are twisted in a spiral shape.

[0009] In some embodiments, the ratio of the diameter of the core layer to the thickness of the basalt fiber layer is 1-3 times.

[0010] Compared with the prior art, this application has at least one of the following beneficial effects:

[0011] 1. Enhanced structural strength: By introducing the core layer and metal mesh layer, the overall strength of the fiber reinforcement is improved, and the compression and tensile resistance are enhanced.

[0012] 2. Improve corrosion resistance: The design of combining basalt fiber with epoxy resin ensures the corrosion resistance of the fiber reinforcement in harsh environments, and is particularly suitable for environments with high salt and high humidity.

[0013] 3. Reduce production costs: By using thin polymer material rods and thin steel rods in the structure, the use of basalt fiber is reduced, thereby effectively reducing production costs.

[0014] 4. Simplify the production process: The reasonable structural design reduces the material consumption and process complexity in the production process of basalt fiber reinforcement, and improves production efficiency.

[0015] 5. Improved bonding performance: V-shaped ribs are set on the surface to improve the bonding performance between fiber reinforcement and concrete, and enhance its application effect in the structure.

[0016] The above-listed beneficial effects are not exhaustive and other potential beneficial effects and detailed technical implementations will be further disclosed in the examples or other description sections of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand the various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the drawings and the like sometimes do not represent the actual positions, sizes, and ranges. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment disclosed in the present application, in which each layer is partially cut away. DETAILED DESCRIPTION

[0019] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide many additional embodiments.

[0020] It should be understood that like reference numerals refer to like elements throughout the drawings. In the drawings, the dimensions of some features may be distorted for clarity.

[0021] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered part of the authorization specification.

[0022] As used in this specification, the singular forms "a," "an," "said," and "the" include the plural forms unless otherwise expressly stated. The terms "include," "comprise," and "contain" as used in this specification indicate the presence of the claimed features, but do not exclude the presence of one or more additional features. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items. Example

[0023] like Figure 1 As shown in Figure 1, this embodiment details an exemplary structure of a basalt fiber rebar. The rebar consists of a core layer 1 composed of multiple core rods 101 and 102, a basalt fiber layer 2 covering the core layer 1, and a metal mesh layer 3 embedded within the basalt fiber layer 2. These components are physically aligned to enhance the overall strength and durability of the fiber rebar, making it suitable for reinforcing and stabilizing various concrete structures. In infrastructure construction, such as bridges, tunnels, and high-rise buildings, basalt fiber rebars can provide reliable structural support, ensuring the safety and long-term durability of the buildings.

[0024] The core layer 1 in this embodiment is composed of multiple polymer core rods 101 and steel core rods 102, which are twisted together to form a robust internal skeleton. The polymer core rods 101 possess high tensile strength and excellent flexibility, thereby enhancing the overall tensile strength of the basalt fiber rebar. The steel core rods 102 provide additional rigid support, ensuring minimal deformation of the rebar under high loads. This spiral twisting design enables the core layer 1 to maintain stable shape and mechanical properties even under complex stress conditions, reducing the risk of fracture or permanent deformation.

[0025] The core layer 1 is covered with a basalt fiber layer 2, which is made of a mixture of epoxy resin and short basalt fibers. Epoxy resin, as a matrix material, can firmly bond to the short basalt fibers to form a tough outer shell. The basalt fiber layer 2 not only has good compressive properties, but can also effectively resist corrosion factors in the environment, such as moisture and chemical erosion. A number of V-shaped ribs 201 are convexly provided on the outer surface of the basalt fiber layer 2. The presence of these ribs 201 enhances the friction between the fiber reinforcement and the concrete, thereby effectively improving its anchoring effect in the concrete. During the construction process, this design ensures the stable position of the basalt fiber reinforcement in the concrete, avoiding displacement due to external forces. In addition, the design of the ribs 201 can also effectively prevent slippage during the concrete curing process, ensuring the stability of the fiber reinforcement under various external stresses, thereby improving the safety of the overall structure.

[0026] To further enhance the overall strength of the basalt fiber rebar, a metal mesh layer 3 is sandwiched within the basalt fiber layer 2. This metal mesh layer 3 consists of at least one coil of metal mesh. This metal mesh layer 3, working together with the basalt fiber layer 2, further enhances the rebar's shear and impact resistance. In practical applications, such as reinforcing bridge columns or large building foundations, the metal mesh layer 3 effectively disperses externally applied localized stress, preventing damage to the rebar caused by excessive localized stress.

[0027] More specifically, in this embodiment, the ratio of the diameter of the core layer 1 to the thickness of the basalt fiber layer 2 is 1-3 times. This ratio has been repeatedly verified through experiments to ensure that the fiber reinforcement possesses sufficient compressive and tensile strength while maintaining its lightweight characteristics. In actual construction, this design not only ensures structural strength but also reduces material consumption, thereby lowering construction costs and improving economic benefits. Furthermore, this ratio ensures the flexibility of the fiber reinforcement, making it easier to operate and arrange under complex construction conditions. In particular, in scenarios requiring bending and adjustment, the fiber reinforcement can better adapt to engineering needs.

[0028] For example, in bridge beam reinforcement applications, basalt fiber rebar can effectively replace traditional steel bars. Its excellent corrosion resistance makes it very suitable for structural reinforcement in humid or corrosive environments, thereby extending the service life of the structure. At the same time, through the tight anchoring of the V-shaped ribs 201 with the concrete, the basalt fiber rebar can be better embedded in the concrete during the concrete curing process, significantly improving the rigidity and durability of the overall structure. In bridges and port structures in coastal areas, traditional steel bars are susceptible to corrosion due to salt spray and humid environments. However, basalt fiber rebar, due to its excellent corrosion resistance, can significantly extend the service life of these structures and reduce subsequent maintenance costs.

[0029] A detailed description of specific usage scenarios and beneficial effects demonstrates the excellent performance of this basalt fiber rebar in harsh environments over long periods of use. This is particularly true in engineering applications requiring lightweighting and high strength, such as high-rise building reinforcement, tunnel lining, and infrastructure repair. Basalt fiber rebar offers superior performance compared to traditional steel bars, significantly improving construction efficiency and structural safety.

[0030] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications may be made to the exemplary embodiments of the present disclosure without departing substantially from the spirit and scope of the present disclosure. Therefore, all such changes and modifications are intended to be within the scope of protection of the present disclosure as defined by the appended claims. The present disclosure is defined by the appended claims, and equivalents of these claims are intended to be included therein.

Claims

1. A basalt fiber reinforcement, characterized in that: The fiber reinforcement includes: a core layer composed of multiple core rods, a basalt fiber layer located outside the core layer and covering the core layer, and a metal mesh layer sandwiched within the basalt fiber layer. The core layer includes multiple polymer material core rods and multiple steel core rods; the basalt fiber layer is composed of short basalt fibers mixed with epoxy resin; and the outer surface of the basalt fiber layer is protruded with a number of V-shaped ribs.

2. The basalt fiber reinforcement according to claim 1, characterized in that: The metal mesh layer includes at least one coiled metal mesh.

3. The basalt fiber reinforcement according to claim 1, characterized in that: The polymer material thin rods in the core layer and a plurality of steel thin rods are twisted in a spiral shape.

4. The basalt fiber reinforcement according to claim 1, characterized in that: The ratio of the diameter of the core layer to the thickness of the basalt fiber layer is 1-3 times.

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