Composite material rib

Abstract

The utility model relates to the technical field of building materials, in particular to a composite material rib, which comprises a central layer, a peripheral layer and a sand-coated layer, the peripheral layer is wrapped on the periphery of the central layer, the sand-coated layer is wrapped on the periphery of the peripheral layer, the central layer is made of thermosetting resin, the peripheral layer comprises reinforced fibers and thermoplastic resin, and the sand-coated layer is wrapped on the periphery of the sand-coated layer. The volume of the central layer accounts for 60%-70% of the volume of the whole composite material rib, and the volume of the peripheral layer accounts for 30%-40% of the volume of the whole composite material rib. According to the composite material rib, the center layer serves as a main component for guaranteeing the mechanical property after being cured, the structural form of the peripheral layer can be changed, and the peripheral layer of the composite material rib needs to be secondarily machined again according to different conditions on site so that the composite material rib can be changed into the size needed and suitable for the site; after secondary machining is completed, the surface can be subjected to overall sand coating to form a sand coating layer, and the technical problem that in the prior art, the cost of secondary machining of the composite material rib on a construction site is high is solved.

Description

Technical Field

[0001] This utility model relates to the field of building materials technology, specifically to a composite material reinforcement. Background Technology

[0002] Traditional composite reinforcement bars are manufactured using thermosetting resins, produced and shaped in the factory, and then delivered to the site for binding. However, with the increasing complexity of construction project drawings and higher on-site requirements, many projects have requested adjustments to dimensions and structures based on actual conditions. Another option is to use thermoplastic resins. While thermoplastic resins offer reversibility and reprocessability, enabling on-site secondary processing, their high cost has limited their application in existing domestic projects. For clean energy, water conservancy, and other special projects with complex drawings and site conditions, achieving reprocessability of composite reinforcement bars while controlling costs is particularly important. Utility Model Content

[0003] The purpose of this utility model is to provide a composite material reinforcement to solve the problem of high cost of secondary processing of composite material reinforcement on construction site in the prior art. The specific technical solution is as follows:

[0004] This utility model provides a composite material rib, including a central layer, an outer layer, and a sand coating layer. The outer layer wraps around the outer periphery of the central layer, and the sand coating layer wraps around the outer periphery of the outer layer. The material of the central layer is thermosetting resin, and the material of the outer layer is thermoplastic resin.

[0005] A further improvement of this utility model of composite material reinforcement is that the volume of the central layer accounts for 60%-70% of the total volume of the composite material reinforcement.

[0006] A further improvement of this utility model of composite material reinforcement is that the volume of the central layer accounts for 65%-68% of the total volume of the composite material reinforcement.

[0007] A further improvement of this utility model of composite material reinforcement is that the volume of the outer layer accounts for 30%-40% of the total volume of the composite material reinforcement.

[0008] A further improvement of this utility model of composite material reinforcement is that the volume of the outer layer accounts for 32%-37% of the total volume of the composite material reinforcement.

[0009] A further improvement of this utility model of composite material reinforcement is that the thickness of the sand coating layer is 0.2mm-0.4mm.

[0010] A further improvement of this utility model of composite material reinforcement is that the thickness of the sand coating layer is 0.28mm-0.35mm.

[0011] A further improvement of this utility model of composite material reinforcement is that the thermoplastic resin is a material that can be processed at temperatures between 180℃ and 220℃.

[0012] The application of the technical solution of this utility model has the following beneficial effects:

[0013] This novel composite rebar uses a central layer that, after curing, serves as the primary component ensuring mechanical properties. The outer layer's structure can be modified. On-site, depending on the specific conditions, the outer layer of the composite rebar only needs secondary processing to achieve the required dimensions. After secondary processing, the surface can be coated with sand to form a sand layer, solving the high cost problem of secondary processing of composite rebars on construction sites in existing technologies. This invention retains the high performance and strength of traditional composite rebars while allowing for repeated processing on-site. By ensuring high performance and repeatability, it controls product costs, making it more feasible and operable.

[0014] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the composite material reinforcement of this utility model.

[0017] The structure consists of: 1. Central layer; 2. Outer layer; 3. Sand covering layer. Detailed Implementation

[0018] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] See Figure 1As shown, a composite material reinforcement includes a central layer 1, an outer layer 2, and a sand-coating layer 3. The outer layer 2 wraps around the outer periphery of the central layer 1, and the sand-coating layer 3 wraps around the outer periphery of the outer layer 2. The central layer 1 is made of thermosetting resin, and the outer layer 2 is made of thermoplastic resin. The thermosetting resin accounts for 17.5%-21% of the total weight of the composite material reinforcement to ensure the bonding and shaping between the central layer 1 and the reinforcing fibers. The thermoplastic resin accounts for 7.5%-9% of the total weight of the composite material reinforcement to ensure the bonding and shaping between the outer layer 2 and the reinforcing fibers. Because this invention has a structure of a central layer 1 and an outer layer 2, the structure of the central layer 1 is fixed after curing, while the structure of the outer layer 2 can be changed. On-site, the outer layer 2 of the composite material reinforcement can be reprocessed to the required dimensions according to different conditions. In this case, after secondary processing on site, the surface can be covered with sand as a whole. The sand covering layer 3 covers more than 80% of the surface, which can increase the bond strength between the composite reinforcement and the concrete during construction and improve the overall performance of the concrete.

[0020] In this embodiment, the thermosetting resin can specifically be an unsaturated polyester resin, vinyl ester resin, or epoxy resin. The thermoplastic resin can specifically be PP-polypropylene or PA-polyamide. The sand used in the coating layer has a mesh size of 20-40 mesh and a particle size range of 400-800 micrometers.

[0021] Preferably, the volume of the central layer accounts for 60%-70% of the total volume of the composite material rib.

[0022] Preferably, the volume of the central layer accounts for 65%-68% of the total volume of the composite material rib.

[0023] Preferably, the volume of the outer layer accounts for 30%-40% of the total volume of the composite material rib.

[0024] Preferably, the volume of the outer layer accounts for 32%-37% of the total volume of the composite material rib.

[0025] Preferably, the thickness of the sand coating layer is 0.2mm-0.4mm.

[0026] Preferably, the thickness of the sand coating layer is 0.28mm-0.35mm.

[0027] Preferably, the thermoplastic resin is a material that can be further processed at temperatures between 180°C and 220°C.

[0028] If secondary processing is required on-site, the outer layer 2 is softened by high temperature, reshaped, and then the outer surface is covered with sand. After the sand is covered, it is cooled and cured.

[0029] This novel composite material reinforcement uses a central layer 1, which, after curing, serves as the primary component ensuring mechanical properties. The outer layer 2 can be structurally modified; on-site, depending on the specific conditions, the outer layer 2 only requires secondary processing to achieve the required dimensions. After secondary processing, a sand coating 3 can be applied to the surface, solving the high cost problem of on-site secondary processing of composite material reinforcement in existing technologies. This invention retains the high performance and strength of traditional composite reinforcement while allowing for repeated processing on-site. By ensuring high performance and repeatability, it controls product costs, making it more feasible and operable.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite rod, characterized by, It includes a central layer (1), an outer layer (2) and a sand coating layer (3). The outer layer (2) wraps around the outer periphery of the central layer (1), and the sand coating layer (3) wraps around the outer periphery of the outer layer (2). The material of the central layer (1) is thermosetting resin, and the material of the outer layer (2) is thermoplastic resin.

2. The composite rod of claim 1, wherein The volume of the central layer (1) accounts for 60%-70% of the total volume of the composite material rib.

3. The composite rod of claim 2, wherein, The volume of the central layer (1) accounts for 65%-68% of the total volume of the composite material rib.

4. The composite rod of claim 1, wherein The volume of the outer layer (2) accounts for 30%-40% of the total volume of the composite material rib.

5. The composite rod of claim 4, wherein, The volume of the outer layer (2) accounts for 32%-37% of the total volume of the composite material rib.

6. The composite rod of claim 1, wherein The thickness of the sand covering layer (3) is 0.2mm-0.4mm.

7. The composite rod of claim 1, wherein The thickness of the sand covering layer (3) is 0.28mm-0.35mm.

8. The composite rod of claim 1, wherein, The thermoplastic resin is a material that can be further processed at temperatures between 180°C and 220°C.

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