Basalt fiber composite bar with high tensile strength

Abstract

The utility model discloses a basalt fiber composite bar with high tensile strength, which comprises an inner core made of a steel bar material, the outer wall of the inner core is wrapped with a plurality of bundles of first-layer basalt ropes, the first-layer basalt ropes are wrapped with a plurality of bundles of second-layer basalt ropes, and gaps between the first-layer basalt ropes and the second-layer basalt ropes are filled with structural adhesive. The outer wall of the second layer of basalt rope is coated with a corrosion-resistant layer, and the corrosion-resistant layer is bonded to the structural adhesive. The acid and alkali corrosion resistance of the basalt fiber composite bar is incomparable to that of any other fiber material products, the thermal expansion coefficient of the basalt fiber composite bar is similar to that of concrete, and the basalt fiber composite bar and the concrete cannot generate too large temperature stress when being used in the concrete.

Description

Technical Field

[0001] This utility model relates to the field of composite reinforcement technology, specifically a basalt fiber composite reinforcement with high tensile strength. Background Technology

[0002] The construction industry utilizes standardized design, industrialized design, and prefabricated construction methods to build, manage, and use buildings in order to improve the overall quality of buildings and reduce design costs and material consumption.

[0003] For example, in the reinforcement process, steel bars or composite bars are generally used to reinforce buildings. However, current composite bars generally have the following problems: (1) Current composite bars have high density and low tensile strength; (2) They have poor resistance to acid and alkali corrosion; (3) Their expansion coefficients are far different from those of concrete, and when used in concrete, the latter two will generate large temperature stresses. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a basalt fiber composite rebar with high tensile strength, thereby solving the problems mentioned in the background section.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A high tensile strength basalt fiber composite rebar includes a steel core, an outer wall of which is wrapped with multiple bundles of first-layer basalt ropes, and multiple bundles of second-layer basalt ropes wrapped around the first-layer basalt ropes. The gaps between the first-layer basalt ropes and the second-layer basalt ropes are filled with structural adhesive. The outer wall of the second-layer basalt ropes is covered with a corrosion-resistant layer, which is bonded to the structural adhesive.

[0007] Preferably, both the first and second layers of basalt rope consist of 10 bundles, and the basalt rope is woven from basalt fibers.

[0008] Preferably, the inner core has a diameter of 6 mm and the corrosion-resistant layer has an outer diameter of 12 mm.

[0009] Preferably, the outer wall of the corrosion-resistant layer is wrapped with a spiral reinforcing strip, and both the corrosion-resistant layer and the reinforcing strip are made of basalt fiber.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) Basalt fiber composite reinforcement has a tensile strength more than twice that of ordinary copper reinforcement and steel bars of the same specification, and its density is only about 1 / 4 of that of ordinary steel bars, approximately between 1.8-2.1 g / cm3. Its resistance to acid and alkali corrosion is unmatched by any other fiber material products. Its coefficient of thermal expansion is similar to that of concrete, and the use of basalt composite reinforcement in concrete will not generate too much temperature stress.

[0012] (2) Reinforcing steel has a good load-bearing capacity during construction, which can make up for the deficiencies of concrete in tensile, compressive, bending, shear and crack resistance. Reinforcing steel has corrosion resistance and can maintain the stability of the structure for a long time, ensuring the durability of the building. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] In the diagram: 1-Inner core, 2-First layer of basalt rope, 3-Second layer of basalt rope, 4-Structural adhesive, 5-Corrosion resistant layer, 6-Reinforcing strip. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1

[0018] Please see Figures 1-2 A high tensile strength basalt fiber composite reinforcement includes an inner core 1 made of HRB400 steel bar, the outer wall of the inner core 1 is wrapped with multiple bundles of first layer basalt rope 2, and the first layer basalt rope 2 is covered with multiple bundles of second layer basalt rope 3. Specifically, the first layer basalt rope 2 and the second layer basalt rope 3 are both 10 bundles and are all woven from basalt fiber.

[0019] The gap between the first layer of basalt rope 2 and the second layer of basalt rope 3 is filled with structural adhesive 4. The outer wall of the second layer of basalt rope 3 is covered with a corrosion-resistant layer 5, which is bonded to the structural adhesive 4. Preferably, the inner core 1 has a diameter of 6 mm, and the outer diameter of the corrosion-resistant layer 5 is 12 mm.

[0020] Structural adhesive 4 can be a neutral transparent silicone structural adhesive, which has excellent bonding performance, will not affect the surface of the substrate, will not age, and has very stable performance. After curing, it can withstand 25% of the expansion and contraction displacement of the interface, effectively relieving external vibration, compression, and tension, and providing a stronger bond to the substrate.

[0021] In summary, the basalt fiber composite reinforcement described in this embodiment has a tensile strength more than twice that of ordinary copper or steel reinforcement of the same specifications, while its density is only about one-quarter that of conventional steel reinforcement, approximately between 1.8 and 2.1 g / cm³. Its resistance to acid and alkali corrosion is unparalleled by any other fiber-reinforced material. Its coefficient of thermal expansion is similar to that of concrete, meaning that the use of basalt composite reinforcement in concrete will not generate significant temperature stress. The reinforcement exhibits excellent load-bearing capacity during construction, compensating for the deficiencies of concrete in tensile, compressive, bending, shear, and crack resistance. Furthermore, the reinforcement possesses corrosion resistance, maintaining structural stability over the long term and ensuring the durability of the building.

[0022] Example 2

[0023] Based on Example 1, the outer wall of the corrosion-resistant layer 5 is wrapped with a spiral reinforcing band 6. Both the corrosion-resistant layer 5 and the reinforcing band 6 are made of basalt fiber. Wrapping the reinforcing band 6 around the outer wall of the corrosion-resistant layer further tightens the corrosion-resistant layer, thereby making the overall structure of the composite reinforcement more compact, which improves strength and reduces diameter.

[0024] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A basalt fiber composite rebar with high tensile strength, characterized in that: The inner core (1) is made of steel bars. The outer wall of the inner core (1) is wrapped with multiple bundles of first-layer basalt rope (2). The first-layer basalt rope (2) is covered with multiple bundles of second-layer basalt rope (3). The gap between the first-layer basalt rope (2) and the second-layer basalt rope (3) is filled with structural adhesive (4). The outer wall of the second-layer basalt rope (3) is covered with a corrosion-resistant layer (5). The corrosion-resistant layer (5) is bonded to the structural adhesive (4).

2. The basalt fiber composite rebar with high tensile strength according to claim 1, characterized in that: The first layer of basalt rope (2) and the second layer of basalt rope (3) are both 10 bundles and are woven from basalt fibers.

3. The basalt fiber composite rebar with high tensile strength according to claim 1, characterized in that: The inner core (1) has a diameter of 6 mm, and the corrosion-resistant layer (5) has an outer diameter of 12 mm.

4. The basalt fiber composite rebar with high tensile strength according to claim 1, characterized in that: The outer wall of the corrosion-resistant layer (5) is wrapped with a spiral reinforcing band (6), and both the corrosion-resistant layer (5) and the reinforcing band (6) are made of basalt fiber.

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