3D glass fiber net, concrete prefabricated part comprising 3D glass fiber net and manufacturing method of concrete prefabricated part

Abstract

The invention discloses a 3D glass fiber net, a concrete prefabricated component comprising the 3D glass fiber net and a manufacturing method of the 3D glass fiber net, and belongs to the field of decorative concrete components, the 3D glass fiber net comprises an upper glass fiber grid, a lower glass fiber grid and a glass fiber framework, the upper glass fiber grid and the lower glass fiber grid are symmetrically arranged and connected through the glass fiber framework, and the upper glass fiber grid and the lower glass fiber grid are connected through the glass fiber framework. The upper glass fiber grid, the lower glass fiber grid and the glass fiber framework are all made of glass fiber stranded wires, and each glass fiber stranded wire is formed by weaving three glass fiber bundles with the thickness of 0.5 mm. According to the 3D glass fiber mesh, the three glass fiber bundles with the thickness of 0.5 mm are woven into the glass fiber stranded wires, and the upper glass fiber mesh, the lower glass fiber mesh and the glass fiber framework which are made of the glass fiber stranded wires form the novel 3D glass fiber mesh, so that compared with an existing common 3D glass fiber mesh, the overall mechanical property is improved, and the service life of the 3D glass fiber mesh is prolonged. And the tensile and anti-cracking capabilities of the concrete prefabricated component are further improved.

Description

Technical Field

[0001] The present invention belongs to the field of decorative concrete components, and in particular relates to a 3D glass fiber mesh, a prefabricated concrete component containing the 3D glass fiber mesh, and a manufacturing method thereof. Background Art

[0002] In order to pursue thinness and beauty, and to reduce the deadweight of the main building, decorative concrete components are usually about 3 cm thick and 2-4 meters long. In order to make ultra-thin concrete components have sufficient toughness to resist the risk of cracking, ultra-high performance concrete with steel fibers added is usually used to make components. However, the cost of ultra-high performance concrete is 15-25 times that of ordinary concrete, and steel fibers are easy to leak and rust, affecting the beauty of the overall concrete components. For this reason, in recent years, 3D glass fiber mesh has been used to replace steel fibers to prepare decorative concrete components, which not only improves the tensile and crack resistance of concrete components, but also ensures the beauty of concrete components. However, ordinary 3D glass fiber mesh has a smooth fiber surface, and most of the mechanical tests are fiber slippage in the matrix, and the overall mechanical properties of its components need to be further improved. Therefore, how to provide a 3D glass fiber mesh with high overall mechanical properties, a prefabricated concrete component containing the 3D glass fiber mesh, and a method for making the same are technical problems that technicians in the field need to solve urgently. Summary of the invention

[0003] The purpose of the present invention is to provide a 3D glass fiber mesh, a precast concrete component containing the 3D glass fiber mesh and a manufacturing method thereof, so as to improve the utilization efficiency of the fiber, and by special-shaped processing and pretreatment of the fiber, increase the bonding force between the fiber and the cement slurry, and give full play to the tensile strength of the glass fiber.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is:

[0005] A 3D glass fiber mesh comprises an upper glass fiber grid, a lower glass fiber grid and a glass fiber skeleton, wherein the upper glass fiber grid and the lower glass fiber grid are symmetrically arranged and connected via the glass fiber skeleton, and the upper glass fiber grid, the lower glass fiber grid and the glass fiber skeleton are all made of glass fiber twisted wires.

[0006] Furthermore, the upper glass fiber grid and the lower glass fiber grid have the same structure and are both in a tic-tac-toe shape, and the distance between two parallel adjacent glass fiber strands is 10 mm.

[0007] Furthermore, the thickness of the 3D glass fiber mesh is 25 mm.

[0008] Furthermore, the glass fiber strand is woven from three 0.5 mm thick glass fiber bundles.

[0009] Furthermore, the glass fiber skeleton is wavy.

[0010] Furthermore, the surface of the 3D glass fiber mesh is sprayed with epoxy resin.

[0011] A prefabricated concrete component, embedded with any of the above-mentioned 3D glass fiber meshes.

[0012] A method for manufacturing a precast concrete component, used for manufacturing the above-mentioned precast concrete component, comprises the following steps:

[0013] S1: Assembling a mold, wherein the mold is a steel mold or a wooden mold;

[0014] S2: Pour 1cm thick non-shrinkage grouting material with strength above C60 in the mold, and add 2‰ weight of 6mm glass fiber to the non-shrinkage grouting material to prevent plastic cracking;

[0015] S3: Press the 3D glass fiber mesh sprayed with epoxy resin into the non-shrinkage grouting material so that it is close to the mold bottom plate;

[0016] S4: pouring non-shrinkage grouting material on top of the 3D fiberglass mesh to fill the mold;

[0017] S5: Component maintenance and demoulding.

[0018] The 3D glass fiber mesh, the prefabricated concrete component including the 3D glass fiber mesh and the manufacturing method thereof provided by the present invention have the following advantages compared with the prior art:

[0019] 1. By weaving three 0.5mm thick glass fiber bundles into glass fiber strands, and then forming an upper glass fiber grid, a lower glass fiber grid and a glass fiber skeleton made of the glass fiber strands, a new type of 3D glass fiber mesh is formed. Compared with the existing ordinary 3D glass fiber mesh, the overall mechanical properties are improved, and the tensile and crack resistance of the precast concrete components is further improved;

[0020] 2. Before pouring concrete components, the 3D glass fiber mesh is sprayed with epoxy resin. Compared with the components made of existing ordinary 3D glass fiber mesh, the bond strength between the fiber and the concrete slurry is improved, thereby improving the overall mechanical properties of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1It is a schematic diagram of the structure of the 3D glass fiber mesh of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the glass fiber skeleton of the present invention;

[0024] Figure 3 It is a top view of the 3D glass fiber mesh of the present invention.

[0025] In the figure: 1-upper glass fiber grid, 2-lower glass fiber grid, 3-glass fiber skeleton. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0027] Example 1

[0028] refer to Figure 1-3 As shown, the present invention provides a 3D glass fiber mesh, comprising: an upper glass fiber grid 1, a lower glass fiber grid 2 and a glass fiber skeleton 3, wherein the upper glass fiber grid 1 and the lower glass fiber grid 2 are symmetrically arranged, and are connected by a glass fiber skeleton 3, and the upper glass fiber grid 1, the lower glass fiber grid 2 and the glass fiber skeleton 3 are all made of glass fiber strands. The upper glass fiber grid 1 and the lower glass fiber grid 2 have the same structure and are both in a tic-tac-toe shape, and the distance between two parallel adjacent glass fiber strands is 10 mm. The thickness of the 3D glass fiber mesh is 25 mm. The glass fiber strand is woven from three 0.5 mm thick glass fiber bundles. By weaving three 0.5 mm thick glass fiber bundles into glass fiber strands, the upper glass fiber grid 1, the lower glass fiber grid 2 and the glass fiber skeleton 3 made of the glass fiber strands form a new type of 3D glass fiber mesh, which improves the overall mechanical properties compared to the existing ordinary 3D glass fiber mesh. The glass fiber skeleton 3 is wavy. The surface of the 3D glass fiber mesh is sprayed with epoxy resin. By spraying epoxy resin on the surface of the 3D glass fiber mesh, the bonding strength between the glass fiber and cement slurry is increased, further improving the overall mechanical properties.

[0029] Example 2

[0030] A precast concrete component is embedded with any of the above-mentioned 3D glass fiber meshes, thereby further improving the tensile and crack resistance of the precast concrete component.

[0031] Example 3

[0032] A method for manufacturing a precast concrete component, used for manufacturing the above-mentioned precast concrete component, comprises the following steps:

[0033] S1: Assemble the mold, which is made of steel or wood. Usually, the size of the decorative concrete prefabricated component is 2-4 meters in length, 0.5-1.5 meters in width, and 3 cm in thickness.

[0034] S2: Pour 1cm thick non-shrinkage grouting material with strength above C60 in the mold, and add 2‰ by weight of 6mm glass fiber to the non-shrinkage grouting material to prevent plastic cracking.

[0035] S3: Before using the 3D fiberglass mesh, first spray a thin layer of epoxy resin on its surface to increase the bond strength between the glass fiber and cement slurry. Then press the 3D fiberglass mesh into the non-shrinkage grouting material so that it is basically close to the mold bottom plate.

[0036] S4: pouring non-shrinkage grouting material on the 3D glass fiber mesh to fill the mold;

[0037] S5: Component maintenance and demoulding.

[0038] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0039] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0040] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A 3D glass fiber mesh, characterized in that: include: An upper glass fiber grid (1), a lower glass fiber grid (2) and a glass fiber skeleton (3), wherein the upper glass fiber grid (1) and the lower glass fiber grid (2) are symmetrically arranged and connected via the glass fiber skeleton (3), and the upper glass fiber grid (1), the lower glass fiber grid (2) and the glass fiber skeleton (3) are all made of glass fiber strands.

2. A 3D glass fiber mesh according to claim 1, characterized in that: The upper glass fiber grid (1) and the lower glass fiber grid (2) have the same structure and are both in a tic-tac-toe shape, and the distance between two parallel adjacent glass fiber strands is 10 mm.

3. A 3D glass fiber mesh according to claim 1, characterized in that: The thickness of the 3D glass fiber mesh is 25 mm.

4. The 3D glass fiber mesh according to claim 1, characterized in that: The glass fiber strand is woven from three 0.5 mm thick glass fiber bundles.

5. The 3D glass fiber mesh according to claim 1, characterized in that: The glass fiber skeleton (3) is wavy.

6. The 3D glass fiber mesh according to claim 1, characterized in that: The surface of the 3D glass fiber mesh is sprayed with epoxy resin.

7. A precast concrete component, characterized in that: The 3D glass fiber mesh according to any one of claims 1 to 6 is embedded therein.

8. A method for manufacturing a precast concrete component, characterized in that: The method for manufacturing the precast concrete component according to claim 7 comprises the following steps: S1: Assembling a mold, wherein the mold is a steel mold or a wooden mold; S2: Pour 1cm thick non-shrinkage grouting material with strength above C60 in the mold, and add 2‰ weight of 6mm glass fiber to the non-shrinkage grouting material to prevent plastic cracking; S3: Press the 3D glass fiber mesh sprayed with epoxy resin into the non-shrinkage grouting material so that it is close to the mold bottom plate; S4: pouring non-shrinkage grouting material on top of the 3D fiberglass mesh to fill the mold; S5: Component maintenance and demoulding.

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