Dual-function material C-FRCM prefabricated slab system easy for circuit and structure lap joint

Abstract

The utility model discloses a dual-function material C-FRCM prefabricated slab system easy for circuit and structure lap joint. The C-FRCM prefabricated slab system comprises at least two prefabricated lap joint units, a plurality of prefabricated connecting units and a plurality of prefabricated connecting units, each prefabricated lap joint unit comprises a prefabricated conductive cement base, a flexible conductive fiber grid and rigid conductive grids at the two ends. A first part of the rigid conductive grid is embedded into the prefabricated conductive cement base and is in circuit connection with the flexible conductive fiber grid, and a second part of the rigid conductive grid is located outside the prefabricated conductive cement base; the second parts of the rigid conductive grids of every two adjacent prefabricated lap joint units are in lap joint with each other, circuit and structure connection is completed, and the second parts are wrapped by the cast-in-place conductive cement base. The size of the prefabricated lap joint units can be adjusted according to needs, the prefabricated lap joint units can be in lap joint with one another, circuit lap joint and structure lap joint can be achieved through the rigid conductive grids, and reliability is high; the prefabricated lap joint units are convenient to transport and use, construction is convenient and fast, and the advantages of the ICCP-SS technology can be brought into full play.

Description

Technical Field

[0001] This utility model relates to the field of concrete reinforcement technology, and in particular to a C-FRCM precast panel system, a dual-functional material that is easy to connect in terms of circuitry and structure. Background Technology

[0002] In some coastal areas, the durability of reinforced concrete structures is often lower than that in inland areas. This is mainly because many reinforced concrete structures in these areas are subject to long-term corrosion from chloride ions in seawater, and the improper mixing of sea sand into some structural materials further exacerbates the corrosion. Studies show that seawater contains high concentrations of chloride ions. If these chloride ions penetrate into reinforced concrete structures, the steel bars will suffer severe corrosion, leading to various forms of structural damage, reducing the structure's durability, and making it difficult to use safely and continuously.

[0003] Furthermore, river sand used in traditional construction has become increasingly scarce after decades of over-exploitation. Therefore, the development of the vast reserves of sea sand is an inevitable trend. However, sea sand contains chloride ions and other harmful substances. If used directly without treatment, these harmful substances will cause electrochemical corrosion on the steel reinforcement in coastal structures, leading to structural damage and significantly reducing the structure's durability.

[0004] Therefore, in practical engineering, the ICCP-SS (Impressed Current Cathodic Protection–Structural Strengthening) system is proposed to strengthen deteriorated coastal reinforced concrete structures. This involves bonding precast carbon-reinforced cementitious matrix (C-FRCM) panels to the concrete surface, then connecting the carbon fiber mesh material within the C-FRCM to the positive terminal of a DC power supply, and connecting the internal steel reinforcement to the negative terminal of the DC power supply to form a circuit. This technology can both improve the already compromised structural performance of the components and prevent further corrosion of the internal steel reinforcement, representing a comprehensive strengthening system that addresses both the symptoms and the root cause.

[0005] In the existing technology, the thickness of C-FRCM precast slabs is generally 10 to 25 mm. Due to their susceptibility to breakage, they cannot be precast to be too long. When reinforcing reinforced concrete beam members, the electrical and structural connections of C-FRCM precast slabs have low reliability issues.

[0006] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a dual-functional material C-FRCM prefabricated panel system that is easy to connect circuits and structures, in order to solve the problem of low reliability of circuit and structural connections in existing C-FRCM prefabricated panels.

[0008] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0009] A dual-functional material C-FRCM prefabricated panel system that facilitates circuit and structural bonding, comprising: at least two prefabricated bonding units; said prefabricated bonding unit comprising:

[0010] Precast conductive cement-based;

[0011] Flexible conductive fiber mesh, embedded in the prefabricated conductive cement base;

[0012] Two rigid conductive meshes are located at both ends of the precast conductive cement base; the first part of the rigid conductive mesh is embedded in the precast conductive cement base and is electrically connected to the flexible conductive fiber mesh, and the second part of the rigid conductive mesh is located outside the precast conductive cement base;

[0013] In this process, the second part of the rigid conductive mesh of two adjacent prefabricated overlapping units overlaps with each other to complete the circuit and structural connection, and is wrapped by cast-in-place conductive cement base.

[0014] The aforementioned C-FRCM precast panel system, a dual-functional material that facilitates circuit and structural connections, wherein both the precast conductive cement-based material and the cast-in-place conductive cement-based material comprise:

[0015] Cement-based;

[0016] Conductive material, dispersed in the cementitious base.

[0017] The aforementioned dual-functional material C-FRCM prefabricated panel system, which facilitates circuit and structural bonding, wherein the conductor is selected from at least one of carbon fiber, corrosion-resistant metal fiber, carbon nanotube, and graphene, and the prefabricated conductive cement base and the cast-in-place conductive cement base further include: toughening fiber, wherein the toughening fiber is selected from at least one of PP fiber, PVA fiber, PE fiber, glass fiber, basalt fiber, and aramid fiber.

[0018] The aforementioned dual-functional material C-FRCM prefabricated panel system, which facilitates circuit and structural integration, wherein the rigid conductive mesh is made of titanium mesh; and the flexible conductive fiber mesh is made of carbon fiber mesh.

[0019] The aforementioned dual-functional material C-FRCM prefabricated panel system, which facilitates circuit and structural connections, wherein the first portion of the carbon fiber mesh and the titanium mesh are connected by conductive epoxy resin.

[0020] The aforementioned dual-functional material C-FRCM prefabricated panel system, which facilitates circuit and structural connections, wherein the second part of the rigid conductive mesh of two adjacent prefabricated overlapping units uses conductive epoxy resin and cable ties to achieve circuit and structural connections.

[0021] The aforementioned dual-functional material C-FRCM prefabricated panel system, which facilitates circuit and structural overlap, wherein, in the length direction of the prefabricated overlap unit, the length of the prefabricated conductive cement base is 1500–2000 mm, the length of the second part of the rigid conductive mesh is 180–220 mm, and the length of the second part of the rigid conductive mesh is 120–180 mm.

[0022] The aforementioned C-FRCM prefabricated panel system, a dual-functional material that facilitates circuit and structural connections, wherein the outermost rigid conductive mesh in the C-FRCM prefabricated panel system serves as a power supply connection point.

[0023] Beneficial effects: The prefabricated overlapping units of this application can be adjusted in size and overlap each other as needed. The rigid conductive mesh can realize circuit overlapping and structural overlapping, with high reliability. The prefabricated overlapping units are convenient to transport and use, and easy to construct, which can give full play to the advantages of ICCP-SS technology. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the prefabricated overlapping unit in an embodiment of this utility model.

[0025] Figure 2 This is an exploded view of the prefabricated overlapping unit in an embodiment of this utility model.

[0026] Figure 3 This is a schematic diagram of the structure of the flexible conductive fiber mesh and the rigid conductive mesh in the embodiments of this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of two adjacent prefabricated overlapping units in an embodiment of this utility model.

[0028] Figure 5 This is a schematic diagram of the structure in which the prefabricated overlapping unit is pasted onto the reinforced concrete to be reinforced in this embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the C-FRCM precast panel system being bonded to the reinforced concrete in an embodiment of this utility model.

[0030] Figure 7 This is a schematic diagram of the power supply and C-FRCM precast slab system in an embodiment of the present invention to protect the reinforced concrete.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Precast overlapping unit; 11. Precast conductive cement base; 12. Flexible conductive fiber mesh; 13. Rigid conductive mesh; 131. First part; 132. Second part; 14. Cable tie; 20. Cast-in-place conductive cement base; 30. Power supply; 40. Reinforced concrete to be reinforced. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] Please also refer to Figures 1 to 7 This utility model provides some embodiments of a dual-functional material C-FRCM prefabricated panel system that is easy to connect in terms of circuitry and structure.

[0035] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, the dual-functional material C-FRCM prefabricated panel system of this utility model, which facilitates circuit and structural bonding, includes: at least two prefabricated bonding units 10; the prefabricated bonding unit 10 includes:

[0036] Precast conductive cement-based 11;

[0037] Flexible conductive fiber mesh 12 is embedded in the prefabricated conductive cement base 11;

[0038] Two rigid conductive meshes 13 are located on the side of the precast conductive cement base 11; the first part 131 of the rigid conductive mesh 13 is embedded in the precast conductive cement base 11 and is electrically connected to the flexible conductive fiber mesh 12, and the second part 132 of the rigid conductive mesh 13 is located outside the precast conductive cement base 11.

[0039] In this process, the second part 132 of the rigid conductive mesh 13 of two adjacent prefabricated overlapping units 10 overlaps with each other to complete the circuit connection and structural connection, and is wrapped by the cast-in-place conductive cement base 20.

[0040] Specifically, the C-FRCM precast slab system in this application has at least two precast overlapping units 10. By overlapping at least two precast overlapping units 10, a larger C-FRCM precast slab system is formed, which then reinforces the reinforced concrete 40 to be strengthened. The precast overlapping units 10 are pre-prepared. When reinforcing the reinforced concrete 40, the precast overlapping units 10 are adhered to the surface of the reinforced concrete 40, with adjacent precast overlapping units 10 overlapping each other. Figure 5 and Figure 6 As shown, when pasting and overlapping the prefabricated overlapping units 10, cast-in-place conductive cement-based material 20 is required to form a cast-in-place conductive cement-based material 20 between two adjacent prefabricated conductive cement-based materials 11, thus wrapping the second part 132 of the exposed rigid conductive mesh 13. The cast-in-place conductive cement-based material 20 is cast on-site and prepared on-site. The conductive cement-based material used for the prefabricated conductive cement-based materials 11 and the cast-in-place conductive cement-based materials 20 can be the same material. The preparation times of the prefabricated conductive cement-based materials 11 and the cast-in-place conductive cement-based materials 20 are different, with the prefabricated conductive cement-based materials 11 being prepared before the cast-in-place conductive cement-based materials 20.

[0041] During the overlapping process, since the precast conductive cement base 11 has already been prepared, the entire precast overlapping unit 10 exhibits rigidity, making it easier to handle. The overlapping area of ​​two adjacent precast overlapping units 10 corresponds to the second part 132 of the rigid conductive mesh 13. The rigid conductive mesh 13 exhibits rigidity, making it easier to overlap and providing higher reliability. This not only facilitates structural reinforcement and support but also ensures smooth circuit operation. Thus, the power supply 30 connects the reinforcing steel of the reinforced concrete 40 to be reinforced and the rigid conductive mesh 13, forming an ICCP-SS system (e.g., Figure 7 As shown, cathodic protection and structural reinforcement are performed on the reinforced concrete 40 to be strengthened. The flexible conductive fiber mesh 12 is flexible, which facilitates full contact with the precast conductive cement base 11 and the formation of multiple conductive paths. It is also beneficial for preparing precast conductive cement bases 11 of different shapes. The precast overlapping units 10 of this application can be adjusted in size and overlap with each other as needed. The rigid conductive mesh 13 can realize circuit overlap and structural overlap, with high reliability. The precast overlapping units 10 are convenient to transport and use, and easy to construct, which can give full play to the advantages of ICCP-SS technology.

[0042] The precast conductive cement-based 11, flexible conductive fiber mesh 12, and rigid conductive mesh 13 are all conductive. After the power source 30 connects the reinforcing steel bars of the reinforced concrete 40 to be reinforced and the rigid conductive mesh 13, a pathway is formed in the reinforced concrete 40 to be reinforced, so that harmful media such as chloride ions in the reinforced concrete 40 are kept away from the reinforcing steel bars to avoid corrosion. It also helps to prevent harmful media such as chloride ions from entering the reinforced concrete 40.

[0043] Both the rigid conductive mesh 13 and the flexible conductive fiber mesh 12 are rectangular or parallelogram meshes. Both include several parallel first extensions and several parallel second extensions. A rectangular mesh is formed when the first and second extensions are perpendicular to each other, and a parallelogram mesh is formed when the first and second extensions form an acute angle. In the flexible conductive fiber mesh 12, both the first and second extensions are made of fiber bundles, while in the rigid conductive mesh 13, both the first and second extensions are made of corrosion-resistant filaments with a certain rigidity.

[0044] The rigid conductive mesh 13 and the flexible conductive fiber mesh 12 have the same mesh size. When they overlap, the mesh of the rigid conductive mesh 13 corresponds to the mesh of the flexible conductive fiber mesh 12, and they are bonded together using a conductive adhesive material, which facilitates good connectivity and conductivity. The rigid conductive mesh 13 of two adjacent prefabricated overlapping units 10 also has the same mesh size. For example, the mesh size of the rigid conductive mesh 13 is 50×50mm, and the mesh size of the flexible conductive fiber mesh 12 is 50×50mm.

[0045] In a preferred embodiment of this utility model, both the precast conductive cement-based 11 and the cast-in-place conductive cement-based 20 include:

[0046] Cement-based;

[0047] Conductive material, dispersed in the cementitious base.

[0048] Specifically, the cementitious base is formed from cement-based materials, such as cement, and may also include materials like sand and polymers. A conductor makes the conductive cementitious base conductive. The precast conductive cementitious base 11 and the cast-in-place conductive cementitious base 20 utilize existing conductive cementitious bases.

[0049] In a preferred embodiment of this utility model, the conductor is selected from at least one of carbon fiber, corrosion-resistant metal fiber, carbon nanotube, and graphene.

[0050] Specifically, the conductor can be short-cut conductive fibers such as carbon fiber and corrosion-resistant metal fiber, or other conductive materials such as carbon nanotubes and graphene.

[0051] In a preferred embodiment of this utility model, the precast conductive cement base 11 and the cast-in-place conductive cement base 20 further include: toughening fibers, wherein the toughening fibers are selected from at least one of PP (Polypropylene) fibers, PVA (Polyvinyl Alcohol) fibers, PE (Polyethylene) fibers, glass fibers, basalt fibers, and aramid fibers.

[0052] Specifically, in order to further improve the strength of conductive cement, toughening fibers are added to the conductive cement base.

[0053] In a preferred embodiment of this utility model, such as Figures 2-4 As shown, the rigid conductive mesh 13 is made of titanium; the flexible conductive fiber mesh 12 is made of carbon fiber.

[0054] Specifically, the rigid conductive mesh 13 can be made of metal, such as titanium. Titanium has high stability, is not easily corroded, and does not react with oxygen, halogens, or water at room temperature, which helps ensure the structural stability of the overlap between two adjacent prefabricated overlapping units 10 and the smooth flow of the circuit. The flexible conductive fiber mesh 12 can be made of carbon fiber, which is usually woven from continuous carbon fibers, such as 12k fiber filaments.

[0055] In a preferred embodiment of this utility model, such as Figures 2-3 As shown, the first part 131 of the carbon fiber mesh and the titanium mesh are connected by conductive epoxy resin.

[0056] Specifically, the first portion 131 of the rigid conductive mesh 13 is located within the precast conductive cement base 11, and the flexible conductive fiber mesh 12 and the first portion 131 of the rigid conductive mesh 13 are connected by conductive epoxy resin. During the fabrication of the precast overlapping unit 10, conductive epoxy resin is first used to connect the first portion 131 of the rigid conductive mesh 13 and the flexible conductive fiber mesh 12. The conductive epoxy resin not only has conductivity but also adhesive properties, ensuring unobstructed circuitry between the first portion 131 of the rigid conductive mesh 13 and the flexible conductive fiber mesh 12. The conductive epoxy resin also protects the flexible conductive fiber mesh 12 and the first portion 131 of the rigid conductive mesh 13, preventing corrosion.

[0057] The first part 131 of the titanium mesh is located within the precast conductive cement base 11. The carbon fiber mesh and the first part 131 of the titanium mesh are bonded together by conductive epoxy resin, which provides a strong connection and facilitates current conduction.

[0058] In a preferred embodiment of this utility model, such as Figures 4-5 As shown, the second part 132 of the rigid conductive mesh 13 of two adjacent prefabricated overlapping units 10 is connected by conductive epoxy resin and cable ties 14 to achieve circuit connection and structural connection.

[0059] Specifically, adjacent prefabricated overlapping units 10 are connected in both circuitry and structurally via the second portions 132 of two rigid conductive meshes 13. This is achieved by binding the second portions 132 of the rigid conductive meshes 13 of the two adjacent prefabricated overlapping units 10 with cable ties 14 and bonding them together with conductive epoxy resin. The cable ties 14 possess strong corrosion resistance and connection strength, resulting in high stability and durability for the overlap between the two adjacent prefabricated overlapping units 10. The conductive epoxy resin not only ensures unobstructed circuitry in the second portions 132 of the two rigid conductive meshes 13 but also protects the second portions 132 of the two rigid conductive meshes 13 from corrosion.

[0060] In a preferred embodiment of this utility model, in the length direction of the prefabricated overlapping unit 10, the length of the prefabricated conductive cement base 11 is 1500-2000 mm, the length of the second part 132 of the rigid conductive mesh 13 is 180-220 mm, and the length of the second part 132 of the rigid conductive mesh 13 is 120-180 mm.

[0061] Specifically, the size and shape of the prefabricated lap unit 10 can be adjusted according to the specific application scenario. For example, if the reinforced concrete 40 to be reinforced is a beam structure, the prefabricated lap unit 10 is rectangular, and multiple prefabricated lap units 10 are arranged along the length of the beam structure. The width of the prefabricated lap unit 10 is approximately the same as the width of the beam structure. The length and number of prefabricated lap units 10 are configured according to the length of the beam structure. For example, the length of the prefabricated conductive cement-based 11 is 1770 mm, the length of the second part 132 of the rigid conductive mesh 13 is 200 mm, and the length of the second part 132 of the rigid conductive mesh 13 is 150 mm.

[0062] In a preferred embodiment of this utility model, such as Figures 6-7 As shown, in the C-FRCM precast panel system, the outermost rigid conductive mesh 13 serves as the connection point for the power supply 30.

[0063] Specifically, the outermost prefabricated overlapping unit 10 has two rigid conductive meshes 13, which are located at both ends of the prefabricated conductive cement base 11. To connect the prefabricated overlapping unit 10 to the power supply 30, the outermost rigid conductive mesh 13 of the prefabricated overlapping unit 10 is retained as the connection point for the power supply 30. The two electrodes of the power supply 30 are then connected to the reinforcing bars of the reinforced concrete 40 to be reinforced and the outermost rigid conductive mesh 13 of the prefabricated overlapping unit 10, respectively, forming an ICCP-SS system.

[0064] This application overcomes the limitations of existing C-FRCM precast slabs, such as the inability to overlap and the difficulty in anchoring, enabling its widespread application in most concrete structures. Compared to existing technologies that involve on-site bonding of fiber mesh, it simplifies construction procedures, shortens the construction period, reduces project costs, and conserves resources and protects the environment. The C-FRCM precast slab system shares the load with the concrete, increasing the structure's load-bearing capacity and stiffness. With the application of an impressed current cathodic protection system, the service life of reinforced concrete structures can be significantly increased, reducing maintenance costs throughout the structure's lifespan. Furthermore, the C-FRCM precast slab system of this application can also serve as a dense protective layer on the outside of the concrete, further enhancing the mechanical properties and durability of the concrete structure.

[0065] The C-FRCM precast panel system of this utility model, which is a dual-functional material that is easy to connect in terms of circuitry and structure, adopts the following steps to reinforce the reinforced concrete to be processed.

[0066] Step S100: Pre-treat the surface of the reinforced concrete to be reinforced;

[0067] Step S200: The prefabricated overlapping units are pasted onto the surface of the reinforced concrete to be reinforced using cast-in-place conductive cement-based material; wherein the second part of the rigid conductive mesh of two adjacent prefabricated overlapping units overlaps each other.

[0068] Step S300: Connect the second part of the rigid conductive mesh of two adjacent prefabricated overlapping units in terms of circuitry and structure.

[0069] Step S400: Wrap the second part of the rigid conductive mesh of two adjacent prefabricated overlapping units with cast-in-place conductive cement-based material;

[0070] Step S500: Curing the prefabricated overlapping unit and the cast-in-place conductive cement-based material.

[0071] Specifically, before reinforcing the reinforced concrete, the surface of the reinforced concrete needs to be pretreated. The pretreatment includes roughening and pre-wetting to improve the adhesion of the surface of the reinforced concrete to be reinforced. The C-FRCM precast panel system is easier to stick to the surface of the reinforced concrete to be reinforced, which also helps to improve the reinforcement effect.

[0072] Precast overlapping units are adhered to the surface of the reinforced concrete to be reinforced. First, a cast-in-place conductive cementitious material is applied to the surface. Then, the precast overlapping units are adhered to the applied material. When two adjacent units are adhered, the second part of the rigid conductive mesh in each unit overlaps. The second parts of the overlapping meshes are then electrically and structurally connected, and the second part is completely encased in the cast-in-place conductive cementitious material, filling the space between adjacent units. After all precast units are adhered and the space between adjacent units is filled, the units and material are cured. During curing, temporary support structures can be used to fix the units and material to the reinforced concrete. Plastic film can also be used for covering and watering during curing.

[0073] A cast-in-place conductive cement-based material is used to form an integrated connection structure between the precast overlapping units and the reinforced concrete to be reinforced, as well as between two adjacent precast overlapping units. This integrated connection structure formed by the conductive cement-based material achieves effective connection between each precast overlapping unit and the reinforced concrete to be reinforced.

[0074] Step S300 specifically includes:

[0075] Step S310: Use cable ties to bind the second part of the overlapping rigid conductive mesh, and use conductive epoxy resin to bond the second part of the overlapping rigid conductive mesh.

[0076] Specifically, the second part of the two rigid conductive grids can be reliably connected by cable ties and conductive epoxy resin, resulting in a high connection strength, smooth circuit, and resistance to damage.

[0077] After step S500, the following steps can be used for further reinforcement construction.

[0078] Step S600: After curing is completed, connect the power supply to the reinforcing bars of the reinforced concrete to be reinforced and the outermost rigid conductive mesh to perform cathodic protection on the reinforced concrete to be reinforced.

[0079] Specifically, after curing, the outermost rigid conductive mesh of the precast lap unit can be connected to one electrode of the power supply, and the reinforcing bars in the reinforced concrete to be reinforced can be connected to the other electrode of the power supply. By energizing the reinforcing bars in the reinforced concrete to be reinforced and the outermost rigid conductive mesh of the precast lap unit, the reinforced concrete to be reinforced can be protected.

[0080] The dual-functional material C-FRCM prefabricated panel system of this invention, which is easy to connect in terms of circuitry and structure, is obtained through the following steps.

[0081] Step S10: Connect the flexible conductive fiber mesh and the rigid conductive mesh circuit;

[0082] Step S20: Apply a lower layer of conductive cement-based material to the mold, and lay the connected flexible conductive fiber mesh and rigid conductive mesh on the lower layer of conductive cement-based material, and then apply an upper layer of conductive cement-based material; wherein, the first part of the rigid conductive mesh and the flexible conductive fiber mesh are both located inside the lower layer of conductive cement-based material and the upper layer of conductive cement-based material, and the second part of the rigid conductive mesh is located outside the lower layer of conductive cement-based material and the upper layer of conductive cement-based material;

[0083] Step S30: After curing the conductive cement-based material, remove the mold to obtain the prefabricated overlapping unit.

[0084] Specifically, steps S10 to S30 are steps for preparing the prefabricated overlapping unit. The prefabricated overlapping unit can be prepared in advance before proceeding to steps S100 to S600. In preparing the prefabricated overlapping unit, the flexible conductive fiber mesh and the rigid conductive mesh are first connected to the circuit. Specifically, conductive epoxy resin can be used to adhere the flexible conductive fiber mesh to the rigid conductive mesh. A layer of conductive cement-based material is laid in the mold as the lower layer of conductive cement-based material. Then, the circuit-connected flexible conductive fiber mesh and the rigid conductive mesh are laid on the lower layer of conductive cement-based material and evenly compacted. Another layer of conductive cement-based material is then laid as the upper layer of conductive cement-based material. The upper and lower layers of conductive cement-based material enclose the first part of the flexible conductive fiber mesh and the rigid conductive mesh, while the second part of the rigid conductive mesh is exposed outside the upper and lower layers of conductive cement-based material. Finally, the conductive cement-based material is cured and demolded to obtain the prefabricated overlapping unit.

[0085] The thickness of the upper conductive cement-based material and the lower conductive cement-based material can be adjusted as needed. The thickness of the upper conductive cement-based material is 5-15mm, and the thickness of the lower conductive cement-based material is 5-15mm.

[0086] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A dual function material C-FRCM precast panel system for easy circuit and structural splicing, characterized by, The application relates to a prefabricated C-FRCM (carbon fiber reinforced cementitious matrix) joint unit. The prefabricated joint unit comprises: a prefabricated conductive cement base; a flexible conductive fiber grid embedded in the prefabricated conductive cement base; two rigid conductive grids located at two ends of the prefabricated conductive cement base; a first part of the rigid conductive grid is embedded in the prefabricated conductive cement base and is electrically connected with the flexible conductive fiber grid, and a second part of the rigid conductive grid is located outside the prefabricated conductive cement base; wherein the second parts of the rigid conductive grids of two adjacent prefabricated joint units are jointed with each other to realize electrical connection and structural connection and are wrapped by cast-in-place conductive cement bases. The prefabricated conductive cement base and the cast-in-place conductive cement base both comprise:

2. The dual function material C-FRCM precast panel system for easy circuit and structural splicing according to claim 1, characterized in that, a cement base; a conductive body dispersed in the cement base. The conductive body is selected from one of carbon fibers, corrosion-resistant metal fibers, carbon nanotubes and graphene; the prefabricated conductive cement base and the cast-in-place conductive cement base further comprise: toughening fibers selected from one of PP fibers, PVA fibers, PE fibers, glass fibers, basalt fibers and aramid fibers.

3. The dual function material C-FRCM precast panel system for easy circuit and structural splicing according to claim 2, characterized in that, The rigid conductive grid adopts a titanium grid; and the flexible conductive fiber grid adopts a carbon fiber grid.

4. The dual function material C-FRCM precast panel system for easy circuit and structural splicing of claim 1, wherein, The first parts of the carbon fiber grid and the titanium grid are electrically connected by using conductive epoxy resin.

5. The dual function material C-FRCM precast panel system for easy circuit and structural splicing of claim 4, wherein, The second parts of the rigid conductive grids of two adjacent prefabricated joint units are electrically connected and structurally connected by using conductive epoxy resin and a cable tie.

6. The C-FRCM preform panel system according to any one of claims 1-5, wherein, In the length direction of the prefabricated joint unit, the length of the prefabricated conductive cement base is 1500-2000 mm, the length of the second part of the rigid conductive grid is 180-220 mm, and the length of the second part of the rigid conductive grid is 120-180 mm.

7. The C-FRCM preform panel system according to any one of claims 1-5, wherein, In the C-FRCM prefabricated plate system, the outermost rigid conductive grid serves as a connection point of a power supply.

8. The C-FRCM preform panel system according to any one of claims 1-5, wherein, ​

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