Dual-function material C-FRCM prefabricated slab system capable of easily carrying out circuit and structure lap joint and reinforcing construction method of dual-function material C-FRCM prefabricated slab system

Abstract

The invention discloses a dual-function material C-FRCM prefabricated slab system easy for circuit and structure lap joint and a reinforcement construction method thereof. The C-FRCM prefabricated slab system comprises at least two prefabricated lap joint 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 rigid conductive grids are wrapped by cast-in-place conductive cement bases. 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] The invention relates to the technical field of concrete reinforcement, and in particular to a dual-functional material C-FRCM prefabricated board system which is easy to perform circuit and structure overlap and a reinforcement construction method thereof. Background Art

[0002] In some coastal areas, the durability of reinforced concrete structures is often lower than that of inland areas. This is mainly because many reinforced concrete structures in these areas are often corroded by chloride ions in seawater for a long time, and some structural materials are improperly mixed with sea sand, and the chloride ions in it further aggravate the corrosion of the structure. Studies have shown that seawater contains a high concentration of chloride ions. If these chloride ions penetrate into reinforced concrete structures with seawater, the steel bars will suffer severe corrosion, which will lead to various forms of structural damage, reduce the durability of the structure, and make it difficult to continue to use it safely.

[0003] In addition, river sand used in traditional construction has become increasingly scarce after decades of over-exploitation, so the development of huge reserves of sea sand is the general trend. However, sea sand contains chloride ions and other harmful media. If used directly without treatment, these harmful media will cause electrochemical corrosion on the steel bars in coastal structures, thereby damaging the structure and greatly reducing the durability of the structure.

[0004] Therefore, in actual engineering, it is proposed to use the ICCP-SS (Impressed Current Cathodic Protection-Structural Strengthening) system to strengthen the coastal reinforced concrete structure with deteriorated performance. The carbon fiber reinforced cementitious matrix (C-FRCM) prefabricated board is pasted on the surface of the concrete structure, and then the carbon fiber mesh material in the C-FRCM is connected to the positive electrode of the DC power supply, and the steel bars inside the concrete are connected to the negative electrode of the DC power supply to form a path. This technology can not only improve the structural performance of the components that have been lost, but also prevent the further corrosion of the steel bars inside the components. It is a reinforcement and enhancement system that treats both the symptoms and the root causes.

[0005] In the prior art, the thickness of C-FRCM prefabricated panels is generally 10 to 25 mm. Since they are prone to breakage, they cannot be prefabricated too long. When reinforcing reinforced concrete beam components, the circuit overlap and structural overlap of the C-FRCM prefabricated panels have low reliability problems.

[0006] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0007] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a dual-functional material C-FRCM prefabricated panel system and a reinforcement construction method thereof are provided, which is easy to perform circuit and structural overlap, aiming to solve the problem of low reliability of circuit connection and structural connection of C-FRCM prefabricated panels in the prior art.

[0008] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0009] A dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap, wherein the system comprises: at least two prefabricated overlap units; the prefabricated overlap units comprise:

[0010] Prefabricated conductive cementitious base;

[0011] A flexible conductive fiber mesh embedded in the prefabricated conductive cement matrix;

[0012] Two rigid conductive grids are located at both ends of the prefabricated conductive cement base; a first portion of the rigid conductive grid is embedded in the prefabricated conductive cement base and is circuit-connected with the flexible conductive fiber grid, and a second portion of the rigid conductive grid is located outside the prefabricated conductive cement base;

[0013] Among them, the second parts of the rigid conductive grids of two adjacent prefabricated overlapping units are overlapped with each other to complete the circuit connection and structural connection, and are wrapped by cast-in-place conductive cement base.

[0014] The dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap, wherein the prefabricated conductive cement base and the cast-in-place conductive cement base both include:

[0015] Cement-based;

[0016] An electrical conductor is dispersed in the cement base.

[0017] The dual-functional material C-FRCM prefabricated board system that is easy to overlap circuits and structures, 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 also include: toughening fiber, and 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 dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap, wherein the rigid conductive grid is a titanium grid; and the flexible conductive fiber grid is a carbon fiber grid.

[0019] In the dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structural overlap, the carbon fiber grid and the first part of the titanium grid are connected to the circuit using conductive epoxy resin.

[0020] The dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structural overlap, wherein the second part of the rigid conductive grid of two adjacent prefabricated overlap units uses conductive epoxy resin and cable ties to achieve circuit connection and structural connection.

[0021] The dual-functional material C-FRCM prefabricated panel system that is easy to perform 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 grid is 180-220 mm, and the length of the second part of the rigid conductive grid is 120-180 mm.

[0022] The dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures, wherein the outermost rigid conductive grid in the C-FRCM prefabricated panel system serves as a connection point for a power source.

[0023] A reinforcement construction method for a dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures as described in any one of the above, wherein the method comprises the steps of:

[0024] Pre-treat the surface of reinforced concrete to be reinforced;

[0025] The prefabricated overlap units are adhered to the surface of the reinforced concrete to be reinforced by using cast-in-place conductive cement-based materials; wherein the second parts of the rigid conductive grids of two adjacent prefabricated overlap units overlap each other;

[0026] Conducting circuit and structural connection on the second parts of the rigid conductive grids of two adjacent prefabricated bonding units;

[0027] using cast-in-place conductive cementitious material to wrap the second portion of the rigid conductive grid of two adjacent prefabricated overlap units;

[0028] The prefabricated overlapping units and the cast-in-place conductive cement-based materials are maintained.

[0029] The reinforcement construction method of the dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures, wherein the reinforcement construction method also includes the steps of:

[0030] After the curing is completed, a power source is connected to the steel bars of the reinforced concrete to be reinforced and the outermost rigid conductive grid to perform cathodic protection on the reinforced concrete to be reinforced.

[0031] Beneficial effects: The prefabricated overlapping units of the present application can be adjusted in size and overlapped with each other as needed, and the rigid conductive grid can achieve circuit overlap and structural overlap with high reliability; the prefabricated overlapping units are convenient for transportation and use, and the construction is convenient, which can give full play to the advantages of ICCP-SS technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a prefabricated overlapping unit in an embodiment of the present invention.

[0033] Figure 2 Detailed description of the invention The figure is an exploded view of a prefabricated overlapping unit in an embodiment of the present invention.

[0034] Figure 3 Schematic diagram of the structure of a flexible conductive fiber grid and a rigid conductive grid in an embodiment of the present invention.

[0035] Figure 4 It is a structural schematic diagram of the overlap of two adjacent prefabricated overlap units in an embodiment of the present invention.

[0036] Figure 5 It is a schematic diagram of the structure in which the prefabricated overlapping unit is pasted to the reinforced concrete to be reinforced in an embodiment of the present invention.

[0037] Figure 6 It is a structural schematic diagram of a C-FRCM prefabricated panel system pasted to reinforced concrete to be reinforced in an embodiment of the present invention.

[0038] Figure 7 It is a schematic diagram of the protection of reinforced concrete to be reinforced by the power supply and C-FRCM prefabricated panel system in an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 10. Prefabricated overlapping unit; 11. Prefabricated 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 DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] Please also see Figure 1 to Figure 7 The present invention provides some embodiments of a dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structural bonding.

[0043] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, the dual-functional material C-FRCM prefabricated panel system of the present invention, which is easy to perform circuit and structure overlap, comprises: at least two prefabricated overlap units 10; the prefabricated overlap unit 10 comprises:

[0044] Prefabricated conductive cement base 11;

[0045] A flexible conductive fiber mesh 12, embedded in the prefabricated conductive cement base 11;

[0046] Two rigid conductive grids 13 are located at both ends of the prefabricated conductive cement base 11; a first portion 131 of the rigid conductive grid 13 is embedded in the prefabricated conductive cement base 11 and is circuit-connected with the flexible conductive fiber grid 12, and a second portion 132 of the rigid conductive grid 13 is located outside the prefabricated conductive cement base 11;

[0047] The second parts 132 of the rigid conductive grids 13 of two adjacent prefabricated overlapping units 10 are overlapped with each other to complete the circuit connection and structural connection, and are wrapped by the cast-in-place conductive cement base 20 .

[0048] Specifically, in the present application, there are at least two prefabricated overlap units 10 in the C-FRCM prefabricated panel system. By overlapping at least two prefabricated overlap units 10, a larger C-FRCM prefabricated panel system is formed, and the reinforced concrete 40 to be reinforced is reinforced. The prefabricated overlap unit 10 is prepared in advance. When the reinforced concrete 40 to be reinforced is reinforced, the prefabricated overlap unit 10 is pasted on the surface of the reinforced concrete 40 to be reinforced, and two adjacent prefabricated overlap units 10 overlap each other. Figure 5 and Figure 6 As shown, when pasting and overlapping the prefabricated overlapping units 10, it is necessary to use a cast-in-place conductive cement base 20 material, and form a cast-in-place conductive cement base 20 between two adjacent prefabricated conductive cement bases 11 to wrap the second part 132 of the exposed rigid conductive grid 13. The cast-in-place conductive cement base 20 material is cast-in-place and ready to use, and the cast-in-place conductive cement base 20 is prepared on site. The conductive cement base material used in the prefabricated conductive cement base 11 and the cast-in-place conductive cement base 20 can be the same material, and the preparation time of the prefabricated conductive cement base 11 and the cast-in-place conductive cement base 20 is different, and the preparation time of the prefabricated conductive cement base 11 is earlier than the preparation time of the cast-in-place conductive cement base 20.

[0049] During the overlapping process, since the prefabricated conductive cement base 11 has been prepared, the entire prefabricated overlapping unit 10 is rigid and more convenient to take and place. The overlapping area of ​​two adjacent prefabricated overlapping units 10 is the corresponding position of the second part 132 of the rigid conductive grid 13. The rigid conductive grid 13 is rigid, easier to overlap, and has higher reliability, which is not only conducive to forming structural reinforcement and structural support, but also conducive to ensuring smooth circuits, so that the steel bars of the reinforced concrete 40 to be reinforced and the rigid conductive grid 13 are connected through the power supply 30 to form an ICCP-SS system (such as Figure 7 As shown), cathodic protection and structural reinforcement are performed on the reinforced concrete 40 to be reinforced. The flexible conductive fiber mesh 12 is flexible, and the flexible conductive fiber mesh 12 is conducive to fully contacting the prefabricated conductive cement base 11 and forming multiple conductive paths, and is also conducive to preparing prefabricated conductive cement bases 11 of different shapes. The prefabricated overlapping units 10 of the present application can be adjusted in size as needed and overlap each other, and the rigid conductive mesh 13 can achieve circuit overlap and structural overlap, with high reliability; the prefabricated overlapping units 10 are easy to transport and use, and are convenient to construct, and can give full play to the advantages of ICCP-SS technology.

[0050] The prefabricated conductive cement base 11, the flexible conductive fiber grid 12, and the rigid conductive grid 13 are all conductive. After the power supply 30 is connected to the steel bars of the reinforced concrete 40 to be reinforced and the rigid conductive grid 13, a passage is formed in the reinforced concrete 40 to be reinforced, so that harmful media such as chloride ions in the reinforced concrete 40 to be reinforced are kept away from the steel bars to avoid corrosion, and it is also beneficial to prevent harmful media such as chloride ions from the outside from entering the reinforced concrete 40 to be reinforced.

[0051] The rigid conductive mesh 13 and the flexible conductive fiber mesh 12 both use a rectangular mesh or a parallelogram mesh. The rigid conductive mesh 13 and the flexible conductive fiber mesh 12 both include: a plurality of mutually parallel first extensions and a plurality of mutually parallel second extensions. When the first extensions are perpendicular to the second extensions, a rectangular mesh is formed. When the first extensions and the second extensions are at an acute angle, a parallelogram mesh is formed. The first extensions and the second extensions in the flexible conductive fiber mesh 12 both use fiber bundles. The first extensions and the second extensions in the rigid conductive mesh 13 both use corrosion-resistant wires with a certain rigidity.

[0052] The mesh size of the rigid conductive mesh 13 is the same as the mesh size of the flexible conductive fiber mesh 12. When the two overlap, the mesh of the rigid conductive mesh 13 corresponds to the mesh of the flexible conductive fiber mesh 12, and the rigid conductive mesh 13 and the flexible conductive fiber mesh 12 are bonded together using a conductive adhesive material, which is conducive to forming good connectivity and conductivity between the two. The mesh sizes of the rigid conductive meshes 13 of two adjacent prefabricated overlapping units 10 are also the same. For example, the mesh size of the rigid conductive mesh 13 is 50×50 mm, and the mesh size of the flexible conductive fiber mesh 12 is 50×50 mm.

[0053] In a preferred implementation of the embodiment of the present invention, the prefabricated conductive cement base 11 and the cast-in-place conductive cement base 20 both include:

[0054] Cement-based;

[0055] An electrical conductor is dispersed in the cement base.

[0056] Specifically, the cement base is formed by cement-based materials, for example, the cement-based materials include cement, and the cement-based materials may also include materials such as sand, polymers, etc. The conductor makes the conductive cement base conductive. The prefabricated conductive cement base 11 and the cast-in-place conductive cement base 20 use conductive cement base in the prior art.

[0057] In a preferred implementation manner of the embodiment of the present invention, the conductor is selected from at least one of carbon fiber, corrosion-resistant metal fiber, carbon nanotube, and graphene.

[0058] Specifically, the conductor may be chopped conductive fibers such as carbon fibers and corrosion-resistant metal fibers, or other conductive materials such as carbon nanotubes and graphene.

[0059] In a preferred implementation of an embodiment of the present invention, the prefabricated conductive cement base 11 and the cast-in-place conductive cement base 20 also include: toughening fibers, the chopped non-conductive fibers are selected from at least one of PP (Polypropylene, polypropylene) fibers, PVA (Polyvinyl Alcohol, polyvinyl alcohol) fibers, PE (Polyethylene, polyethylene) fibers, glass fibers, basalt fibers, and aramid fibers.

[0060] Specifically, in order to further improve the strength of the conductive cement base, toughening fibers are added to the conductive cement base.

[0061] In a preferred implementation of the embodiment of the present invention, Figure 2 to Figure 4 As shown, the rigid conductive mesh 13 is a titanium mesh; the flexible conductive fiber mesh 12 is a carbon fiber mesh.

[0062] Specifically, the rigid conductive mesh 13 may be a metal mesh, such as a titanium mesh. Titanium has high stability, is not easily corroded, and does not react with oxygen, halogens, and water at room temperature, which is conducive to ensuring the structural stability of the two adjacent prefabricated overlap units 10 and smooth circuits. The flexible conductive fiber mesh 12 may be a carbon fiber mesh, which is usually woven from continuous carbon fibers, such as 12k fiber yarns.

[0063] In a preferred implementation of the embodiment of the present invention, Figure 2-Figure 3 As shown, the carbon fiber grid and the first portion 131 of the titanium grid are connected to each other by a conductive epoxy resin.

[0064] Specifically, the first part 131 of the rigid conductive grid 13 is located in the prefabricated conductive cement base 11, and the flexible conductive fiber grid 12 and the first part 131 of the rigid conductive grid 13 are connected in circuit by conductive epoxy resin. When preparing the prefabricated lap joint unit 10, the first part 131 of the rigid conductive grid 13 and the flexible conductive fiber grid 12 are connected in circuit by conductive epoxy resin. The conductive epoxy resin is not only conductive but also adhesive, so that the first part 131 of the rigid conductive grid 13 and the flexible conductive fiber grid 12 are connected in circuit. The conductive epoxy resin can also protect the flexible conductive fiber grid 12 and the first part 131 of the rigid conductive grid 13, and prevent the flexible conductive fiber grid 12 and the first part 131 of the rigid conductive grid 13 from corrosion.

[0065] The first part 131 of the titanium grid is located in the prefabricated conductive cement base 11, and the carbon fiber grid and the first part 131 of the titanium grid are bonded together by conductive epoxy resin, so the connection is firm and conducive to current conduction.

[0066] In a preferred implementation of the embodiment of the present invention, Figure 4-5 As shown, the second parts 132 of the rigid conductive grids 13 of two adjacent prefabricated splicing units 10 are connected in circuit and structure by using conductive epoxy resin and cable ties 14 .

[0067] Specifically, two adjacent prefabricated overlapping units 10 are connected in circuit and structure through the second parts 132 of the two rigid conductive grids 13. Specifically, the second parts 132 of the rigid conductive grids 13 of the two adjacent prefabricated overlapping units 10 are bound by cable ties 14 and bonded together with conductive epoxy resin. The cable ties 14 have strong corrosion resistance and connection strength, so that the overlapping of the two adjacent prefabricated overlapping units 10 has high stability and durability. The conductive epoxy resin can not only realize the smooth circuit of the second parts 132 of the two rigid conductive grids 13, but also protect the second parts 132 of the two rigid conductive grids 13 and prevent the second parts 132 of the rigid conductive grids 13 from being corroded.

[0068] In a preferred implementation of an embodiment of the present invention, 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 grid 13 is 180-220 mm, and the length of the second part 132 of the rigid conductive grid 13 is 120-180 mm.

[0069] Specifically, the size and shape of the prefabricated lap unit 10 can be adjusted according to the specific application scenario. For example, 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 direction of the beam structure. The width of the prefabricated lap unit 10 is roughly the same as the width of the beam structure. The length and number of the prefabricated lap units 10 are configured according to the length of the beam structure. For example, the length of the prefabricated conductive cement base 11 is 1770 mm, the length of the second part 132 of the rigid conductive grid 13 is 200 mm, and the length of the second part 132 of the rigid conductive grid 13 is 150 mm.

[0070] In a preferred implementation of the embodiment of the present invention, Figure 6-7 As shown, in the C-FRCM prefabricated panel system, the outermost rigid conductive grid 13 serves as a connection point for the power source 30 .

[0071] Specifically, the outermost prefabricated lap joint unit 10 has two rigid conductive grids 13, and the two rigid conductive grids 13 are respectively located at the two ends of the prefabricated conductive cement base 11; in order to connect the prefabricated lap joint unit 10 with the power source 30, the rigid conductive grid 13 on the outer side of the outermost prefabricated lap joint unit 10 is retained as the connection point of the power source 30. After the two electrodes of the power source 30 are respectively connected to the steel bars of the reinforced concrete 40 to be reinforced and the outermost rigid conductive grid 13 in the prefabricated lap joint unit 10, an ICCP-SS system is formed.

[0072] The present application can solve the limitation that the C-FRCM prefabricated panels in the prior art cannot be overlapped and are difficult to anchor, so that it can be widely used in most concrete structures. Compared with the on-site pasting of fiber mesh in the prior art, the construction process can be simplified, the construction period can be shortened, the project cost can be reduced, and resources can be saved and the environment can be protected. The C-FRCM prefabricated panel system and the concrete are subjected to force together, which increases the bearing capacity and rigidity of the structure. After applying the impressed current cathodic protection system, the service life of the reinforced concrete structure can also be greatly increased, and the maintenance cost of the structure during its entire life cycle can be reduced. In addition, the C-FRCM prefabricated panel system of the present application can also be used as a dense protective layer on the outside of the concrete to further increase the mechanical properties and durability of the concrete structure.

[0073] Based on the dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures as described in any of the above embodiments, the present invention also provides a preferred embodiment of a reinforcement construction method for the dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures:

[0074] The reinforcement construction method of the dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures according to the embodiment of the present invention comprises the following steps:

[0075] Step S100, pre-treating the surface of the reinforced concrete to be reinforced;

[0076] Step S200, using cast-in-place conductive cement-based materials to adhere the prefabricated overlapping units to the surface of the reinforced concrete to be reinforced; wherein the second parts of the rigid conductive grids of two adjacent prefabricated overlapping units overlap each other;

[0077] Step S300, circuit-connecting and structurally connecting the second parts of the rigid conductive grids of two adjacent prefabricated overlapping units;

[0078] Step S400, using cast-in-place conductive cement-based material to wrap the second part of the rigid conductive grid of two adjacent prefabricated overlapping units;

[0079] Step S500: curing the prefabricated overlapping units and the cast-in-place conductive cement-based materials.

[0080] Specifically, before reinforcing the reinforced concrete, the surface of the reinforced concrete needs to be pretreated. The pretreatment includes: roughening treatment and prewetting treatment to improve the adhesion of the surface of the reinforced concrete. The C-FRCM prefabricated panel system is easier to adhere to the surface of the reinforced concrete, which is also conducive to improving the reinforcement effect.

[0081] The prefabricated overlap unit is pasted on the surface of the reinforced concrete to be reinforced, and the cast-in-place conductive cement-based material is first applied to the surface of the reinforced concrete to be reinforced, and then the prefabricated overlap unit is affixed to the applied cast-in-place conductive cement-based material. When two adjacent prefabricated overlap units are affixed to the applied cast-in-place conductive cement-based material, the second parts of the rigid conductive grids in the two adjacent prefabricated overlap units overlap each other, and then the second parts of the two overlapping rigid conductive grids are connected in circuit and structure, and the second part of the rigid conductive grid is wrapped with cast-in-place conductive cement-based material, that is, the position between the prefabricated conductive cement bases in the two adjacent prefabricated overlap units is filled. After the prefabricated splicing unit is pasted and the position between the prefabricated conductive cement bases in the two adjacent prefabricated overlap units is also filled with cast-in-place conductive cement-based material, the prefabricated overlap unit and the cast-in-place conductive cement-based material are cured. During the curing, a temporary support structure can be used to fix the prefabricated overlap unit and the cast-in-place conductive cement-based material on the reinforced concrete to be reinforced, and plastic film and water can also be covered during the curing period.

[0082] Cast-in-place conductive cement-based materials are used to form an integrated connection structure between the prefabricated overlap unit and the reinforced concrete to be reinforced and between two adjacent prefabricated overlap units. The integrated connection structure formed by the conductive cement-based material realizes the effective connection between each prefabricated overlap unit and the reinforced concrete to be reinforced.

[0083] Step S300 specifically includes:

[0084] Step S310: Use a cable tie to bind the second parts of the mutually overlapping rigid conductive grids, and use a conductive epoxy resin to bond the second parts of the mutually overlapping rigid conductive grids.

[0085] Specifically, the second parts of the two rigid conductive grids can be securely connected by the cable tie and the conductive epoxy resin, the connection strength is high, and the circuit is smooth and not easy to be damaged.

[0086] Reinforcement construction methods also include:

[0087] Step S600: After the maintenance is completed, a power source is connected to the steel bars of the reinforced concrete to be reinforced and the outermost rigid conductive grid to perform cathodic protection on the reinforced concrete to be reinforced.

[0088] Specifically, after maintenance, the rigid conductive grid on the outside of the outermost prefabricated overlap unit can be connected to one electrode of the power supply, and the steel bars in the reinforced concrete to be reinforced can be connected to the other electrode of the power supply. By energizing the steel bars in the reinforced concrete to be reinforced and the outermost rigid conductive grid in the prefabricated overlap unit, the reinforced concrete to be reinforced can be protected.

[0089] Before step S100, the reinforcement construction method further includes the following steps:

[0090] Step S10, connecting the flexible conductive fiber grid and the rigid conductive grid circuit;

[0091] Step S20, applying a lower layer of conductive cement-based material in the mold, laying the connected flexible conductive fiber mesh and the rigid conductive mesh on the lower layer of conductive cement-based material, and then applying 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;

[0092] Step S30: After curing the conductive cement-based material, the mold is removed to obtain a prefabricated overlapping unit.

[0093] Specifically, step S10 to step S30 are steps for preparing a prefabricated overlapping unit. The prefabricated overlapping unit can be prepared in advance, and then step S100 to step S600 are performed. When preparing the prefabricated overlapping unit, the flexible conductive fiber mesh and the rigid conductive mesh are first connected in circuit. Specifically, the flexible conductive fiber mesh can be glued to the rigid conductive mesh using a conductive epoxy resin. A layer of conductive cement-based material is laid in the mold as the lower conductive cement-based material, and then the circuit-connected flexible conductive fiber mesh and the rigid conductive mesh are laid on the lower conductive cement-based material and compacted evenly, and then a layer of conductive cement-based material is laid as the upper conductive cement-based material. The upper conductive cement-based material and the lower conductive cement-based material wrap up the first part of the flexible conductive fiber mesh and the rigid conductive mesh, and the second part of the rigid conductive mesh is exposed outside the upper conductive cement-based material and the lower conductive cement-based material. Finally, the conductive cement-based material is cured and demolded to obtain a prefabricated overlapping unit.

[0094] The thickness of the upper conductive cement-based material and the thickness of the lower conductive cement-based material can be adjusted as needed. The thickness of the upper conductive cement-based material is 5 to 15 mm, and the thickness of the lower conductive cement-based material is 5 to 15 mm.

[0095] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures, characterized in that: include: At least two prefabricated lap units; The prefabricated overlapping unit comprises: Prefabricated conductive cementitious base; A flexible conductive fiber mesh embedded in the prefabricated conductive cement matrix; Two rigid conductive grids are located at both ends of the prefabricated conductive cement base; a first portion of the rigid conductive grid is embedded in the prefabricated conductive cement base and is circuit-connected with the flexible conductive fiber grid, and a second portion of the rigid conductive grid is located outside the prefabricated conductive cement base; Among them, the second parts of the rigid conductive grids of two adjacent prefabricated overlapping units are overlapped with each other to complete the circuit connection and structural connection, and are wrapped by cast-in-place conductive cement base.

2. The dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap according to claim 1 is characterized in that: The prefabricated conductive cement base and the cast-in-place conductive cement base both include: Cement-based; An electrical conductor is dispersed in the cement base.

3. The dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap according to claim 2 is characterized in that: The conductor is selected from at least one of carbon fiber, corrosion-resistant metal fiber, carbon nanotube, and graphene. The prefabricated conductive cement base and the cast-in-place conductive cement base also include: toughening fiber, and the toughening fiber is selected from at least one of PP fiber, PVA fiber, PE fiber, glass fiber, basalt fiber, and aramid fiber.

4. The dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap according to claim 1 is characterized in that: The rigid conductive grid is a titanium grid; the flexible conductive fiber grid is a carbon fiber grid.

5. The dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap according to claim 4 is characterized in that: The carbon fiber grid and the first portion of the titanium grid are connected in circuit by using conductive epoxy resin.

6. The dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures according to any one of claims 1 to 5, characterized in that: The second part of the rigid conductive grid of two adjacent prefabricated overlapping units uses conductive epoxy resin and cable ties to achieve circuit connection and structural connection.

7. The dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures according to any one of claims 1 to 5, characterized in that: In the length direction of the prefabricated overlapping 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.

8. The dual-functional material C-FRCM prefabricated panel system that is easy to perform circuit and structure overlap according to any one of claims 1 to 5, characterized in that: In the C-FRCM prefabricated panel system, the outermost rigid conductive grid serves as the connection point for the power supply.

9. A reinforcement construction method for a dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures as described in any one of claims 1 to 8, characterized in that: Includes steps: Pre-treat the surface of reinforced concrete to be reinforced; The prefabricated overlap units are adhered to the surface of the reinforced concrete to be reinforced by using cast-in-place conductive cement-based materials; wherein the second parts of the rigid conductive grids of two adjacent prefabricated overlap units overlap each other; Conducting circuit and structural connection on the second parts of the rigid conductive grids of two adjacent prefabricated bonding units; using cast-in-place conductive cementitious material to wrap the second portion of the rigid conductive grid of two adjacent prefabricated overlap units; The prefabricated overlapping units and the cast-in-place conductive cement-based materials are maintained.

10. The reinforcement construction method of the dual-functional material C-FRCM prefabricated panel system that is easy to overlap circuits and structures according to claim 9 is characterized in that: The reinforcement construction method also includes the steps of: After the curing is completed, a power source is connected to the steel bars of the reinforced concrete to be reinforced and the outermost rigid conductive grid to perform cathodic protection on the reinforced concrete to be reinforced.

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