CN106836227B - A kind of reinforced concrete structure and its method of construction of included cathodic protection function - Google Patents

Abstract

The invention discloses a reinforced concrete structure with a cathodic protection function and a construction method thereof. The reinforced concrete structure comprises: a formwork structure composed of formwork without dismantling, concrete poured in the formwork structure, and a formwork embedded in the concrete. A plurality of steel bars, and an external power supply for applying a constant current to the steel bars; the non-dismantling formwork is composed of multiple layers of fiber material layers arranged at intervals and a gel material layer with conductive functions; wherein, at least one layer of the fiber material layer It is composed of carbon fiber reinforced composite materials; the upper and lower ends of the non-demolition formwork are cementitious material layers, and each fiber material layer is wrapped between two adjacent cementitious material layers. The reinforced concrete structure with its own cathodic protection function is directly poured into a whole during the construction stage. It has a cathodic protection function and can be applied to the situation where the interior of the concrete material is rich in corrosive media or the external environment is harsh, reducing the impact on construction raw materials. Decontamination requirements and material costs.

Description

A reinforced concrete structure with cathodic protection function and its construction method

technical field

The invention relates to the field of reinforced concrete structures, in particular to a reinforced concrete structure with a cathodic protection function and a construction method thereof.

Background technique

In the past ten years, my country's major infrastructure has developed at an unprecedented scale. However, many areas are facing the problem of lack of basic resources, and the shortage of natural river sand resources cannot meet the requirements of construction sand for the expansion of construction scale in our country. As a relatively abundant resource in my country, sea sand should be rationally and scientifically considered for resource utilization of sea water and sea sand. Since the mid-to-late 1990s, it has appeared in large numbers. With the rapid development of the coastal economy and the continuous advancement of urbanization, the amount of sea sand used for construction has increased sharply. However, sea sand contains a high concentration of chloride ions, which will lead to a series of problems such as corrosion of steel bars and structural deterioration, which will affect the development of infrastructure construction and the safety of people's personal and property, and become one of the hot social issues in coastal areas.

Since cathodic protection can reduce the concentration of chloride ions on the surface of steel bars, timely introduction of cathodic protection in the structural system can not only ensure structural mechanics and durability, but also consider relaxing the requirements for the content of chloride ions in concrete raw materials. Obviously, this method has unique advantages for concrete structures with high concentration of chloride ions inside (such as sea sand concrete), which not only improves the safety and durability of concrete structures, but also reduces the cost of purification treatment of building raw materials (sea sand) requirements and material costs.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a reinforced concrete structure with a cathodic protection function and a construction method thereof. The reinforced concrete structure with a cathodic protection function has a cathodic protection function. The safety and durability of concrete structures, while reducing the requirements and material costs for decontamination of building raw materials.

Technical scheme of the present invention is as follows:

A reinforced concrete structure with its own cathodic protection function, including: a formwork structure composed of formwork without demolition, concrete poured in the formwork structure, multiple steel bars embedded in the concrete, and steel bars of constant size external power supply of current;

The disassembly-free formwork is composed of multiple layers of fiber material layers arranged at intervals and a gel material layer with conductive function; wherein, at least one layer of the fiber material layer is composed of carbon fiber reinforced composite materials; the upper and lower sides of the disassembly-free formwork The end is the gelling material layer, and each layer of the fiber material layer is wrapped between two adjacent layers of the gelling material layer;

The plurality of steel bars are electrically connected; the steel bars, concrete, non-demolition formwork, and external power supply are electrically connected in sequence.

The reinforced concrete structure with cathodic protection function, wherein the cementitious material layer is composed of cementitious material, and the cementitious material comprises the following components in parts by weight: 1 part of cement, 0.3-0.7 parts of water 0.1-0.3 parts of silicon powder, 0.1-0.5 parts of high molecular polymer, 0.004-0.01 parts of plasticizer, 0.002-0.030 parts of water reducing agent and 0.005-0.03 parts of carbon fiber.

In the reinforced concrete structure with cathodic protection function, the fiber material layer is one of fiber cloth, fiber mesh cloth or fiber board.

A method for constructing a reinforced concrete structure with a self-contained cathodic protection function as described above, comprising the steps of:

A, prepare the formwork that does not need to be disassembled;

B. To avoid dismantling the formwork to form a formwork structure;

C. Tie steel bars in the formwork structure, electrically connect the steel bars, and then pour concrete;

D. Connecting to an external power supply, so that steel bars, concrete, non-demolition formwork, and external power supply are electrically connected in sequence to obtain the reinforced concrete structure with its own cathodic protection function.

The construction method of the reinforced concrete structure with self-contained cathodic protection function, wherein, the step A specifically includes:

A1, preparation of gelling material with conductive function;

A2. Pour cementitious material at the bottom of the mold of the cleaned free template to form the first cementitious material layer; lay fiber material on the first cementitious material layer to form the first fiber material layer; Pour cementitious material on one layer of fiber material to form the second layer of cementitious material; lay fiber material on the second layer of cementitious material to form the second layer of fiber material; and so on, in the last layer of fiber material pouring cementitious material on top of each other to form the final cementitious material layer, and then scrape it flat along the mold to form a slab; wherein at least one layer of the fiber material layer is made of carbon fiber reinforced composite material;

A3. Cover the mold top plate on the slab blank, perform pre-press molding to form a plate; perform curing and maintenance on the plate, so that the plate is solidified into a template;

A4. Demoulding, taking out the formwork, and then continuing to maintain it at room temperature for a period of time to obtain a non-demolition formwork.

The method for constructing a reinforced concrete structure with a self-contained cathodic protection function, wherein, in the step A1, the cementitious material layer is composed of a cementitious material, and the cementitious material includes the following components in parts by weight : 1 part of cement, 0.3~0.7 part of water, 0.1~0.3 part of silicon powder, 0.1~0.5 part of high molecular polymer, 0.004~0.01 part of plasticizer, 0.002~0.030 part of water reducing agent and 0.005~0.03 part of carbon fiber.

The method for constructing a reinforced concrete structure with cathodic protection function, wherein, in the step A3, the pre-pressing pressure for pre-pressing is 4-10KN, and the pre-pressing time is 1-3 hours.

The method for constructing a reinforced concrete structure with cathodic protection function, wherein, in the step A3, the curing temperature for the plate is 20-25° C., and the curing time is 46-50 hours.

The method for constructing a reinforced concrete structure with cathodic protection function, wherein, in the step A4, the normal temperature curing time is 5 to 10 days.

The construction method of the reinforced concrete structure with cathodic protection function, wherein, the step C also includes: before pouring the concrete, detecting and ensuring that the electrical connection of the steel bars in the formwork structure is good; after pouring the concrete, after pouring concrete for curing.

Beneficial effects: the invention provides a reinforced concrete structure with cathodic protection function and its construction method. The reinforced concrete structure with cathodic protection function is directly poured into a whole at the construction stage, and has cathodic protection function itself , which saves the labor of installing the cathodic protection system, improves the safety and durability of the concrete structure, can be applied to the situation where the interior of the concrete material is rich in corrosive media or the external environment is harsh, and reduces the requirements for the purification of building raw materials and materials cost.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the fiber composite multi-functional non-disassembly formwork of the present invention.

Fig. 2 is a schematic diagram of a reinforced concrete structure with cathodic protection function according to the present invention.

Fig. 3 is a flow chart of the construction method of the reinforced concrete structure with cathodic protection function according to the present invention.

Fig. 4 is a flow chart of the preparation method of the fiber composite multifunctional non-detachable formwork of the present invention.

Detailed ways

The present invention provides a reinforced concrete structure with cathodic protection function and its construction method. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The present invention provides a multifunctional non-dismantling formwork of fiber composite materials, wherein the multifunctional non-dismantling formwork of fiber composite materials is composed of multiple layers of fiber material layers arranged at intervals and gelling material layers with conductive functions; wherein at least one The fiber material layer is composed of carbon fiber reinforced composite material; the upper and lower ends of the fiber composite material multifunctional non-disassembly formwork are the cementitious material layer, and the fiber material layer of each layer is wrapped in two adjacent layers between the gelling material layers.

The fiber material layer in the present invention is composed of fiber materials, and the fiber materials include carbon fiber materials and glass fiber materials. For example, it may be a fiber reinforced composite material (FRP, Fiber Reinforced Polymer/Plastic) or a carbon fiber reinforced composite material (CFRP, Carbon Fiber Reinforced Polymer/Plastic).

The type of fiber material in the present invention is fiber cloth, fiber mesh cloth or fiber board. That is to say, the fiber material layer in the present invention is one of fiber cloth, fiber mesh cloth or fiber board. Such as FRP cloth, FRP grid cloth or FRP board. The specific form of the carbon fiber reinforced composite material in the present invention can also be carbon fiber cloth (CFRP cloth), carbon fiber mesh cloth (CFRP mesh cloth) or carbon fiber plate (CFRP plate).

The fiber composite material multifunctional non-dismantling formwork of the present invention is a multifunctional composite non-dismantling formwork using CFRP material as the main body and conductive gel material as the carrier. It can be used as an auxiliary anode and a structural reinforcement plate in the cathodic protection system at the same time, and at the same time meet the two functions of preventing steel corrosion and structural reinforcement. As a permanent demolition-free formwork for reinforced concrete buildings, it can provide long-term cathodic protection for the structure. Active intervention in rebar corrosion.

The fiber composite material multifunctional dismantling-free formwork of the preferred embodiment of the present invention, as shown in Figure 1, the gelling material layer with conductive function is provided with 3 layers, respectively the first layer of gelling material layer 11, the second layer of gelling material layer Layer cementitious material layer 13, the third layer cementitious material layer 15, described fibrous material layer is provided with 2 layers, is respectively the first layer of fibrous material layer 12, the second layer of fibrous material layer 14; the first layer of cementitious material Layer 11 and the third layer of cementitious material layer 15 are arranged on the upper and lower ends of the fiber composite multifunctional non-demolition formwork, and the first layer of fiber material layer 12 is wrapped in its adjacent first layer of cementitious material layer 11 and the second Between the layers of cementitious material layer 13, the second layer of fiber material layer 14 is wrapped between its adjacent second layer of cementitious material layer 13 and the third layer of cementitious material layer 15; wherein, the first layer of fiber material layer 12 and the second layer of fiber material layer 14 are both made of carbon fiber reinforced composite material, for example, both are CFRP cloth.

Further, the cementitious material layer is composed of cementitious material, and the cementitious material is cement-based inorganic cementitious material, and the cementitious material includes the following components in parts by weight: 1 part of cement, 0.3~ 0.7 parts, silicon powder 0.1~0.3 parts, polymer 0.1~0.5 parts, plasticizer 0.004~0.01 parts, water reducing agent 0.002~0.030 parts and carbon fiber filaments 0.005~0.03 parts.

Preferably, the thickness of the gelling material layer is 0.5 mm to 10 mm, more preferably 2 mm to 4 mm, for example, the thickness is 3 mm.

The fiber composite material multifunctional non-demolition formwork (demolition-free formwork) of the present invention is used as a formwork in the construction process of reinforced concrete structures, free from disassembly, and can constitute a cathodic protection system to protect the steel bars embedded in the concrete, which is A permanent non-demolition formwork combined with dual functions of cathodic protection and structural reinforcement, which can not only solve the problem of steel corrosion in construction projects, but also can be used instead of wooden temporary formwork, saving resources for the society, protecting the environment, and reducing formwork cost and speed up construction.

It should be noted that the cathodic protection mentioned above is also the impressed current cathodic protection technology, which is proposed based on the principle of PH-potential diagram. By applying cathodic current to the steel bar, the steel bar potential falls in the corrosion-free area, thereby achieving protection. purpose of reinforcement. Auxiliary anodes are an important part of impressed current cathodic protection systems. The principle of cathodic protection is common knowledge and will not be repeated here.

The multifunctional non-demolition formwork of the fiber composite material of the present invention can replace the traditional wooden or steel formwork when building a reinforced concrete structure, and does not need to be disassembled. A new type of fiber composite material with cathodic protection function does not need to disassemble the formwork-reinforcement-concrete composite structure system. Since the structure system can be fed with cathodic protection current from the beginning, it can actively intervene in the corrosion of steel bars in the structure, making the steel bars extremely It oxidizes and drives away harmful corrosive media, such as chloride ions, from the surface of the concrete reinforcement, so as to achieve the purpose of protecting the reinforcement.

The embodiment of the present invention also provides a reinforced concrete structure with cathodic protection function, that is, a new type of fiber composite material multi-functional dismantling-free formwork-steel bar-concrete composite structure with cathodic protection function, as shown in Figure 2, the self-contained The reinforced concrete structure with cathodic protection function includes: a formwork structure consisting of no-demolition formwork 1, concrete 2 poured in the formwork structure, multiple steel bars 3 embedded in the concrete 2, and a constant current for applying a constant magnitude to the steel bars 3 The external power supply 4. Wherein, the plurality of steel bars 3 are electrically connected; the steel bars 3, the concrete 2, the non-demolition formwork 1, and the external power source 4 are electrically connected in sequence.

In order to achieve the purpose of cathodic protection, the steel bar 3-concrete 2-demolition-free formwork 1 structural system of the present invention should form a complete electrical path to smoothly transmit the cathodic protection current. Therefore, in the embodiment of the present invention, the external power supply 4 is connected between the steel bar 3 and the fiber material layer in the formwork 1, so that the steel bar 3, the external power supply 4, and the fiber material layer form a loop to form a cathodic protection system. Among them, the fiber material layer made of CFRP material is the anode of the cathodic protection system, and the steel bar is the cathode of the cathodic protection system. The multifunctional non-dismantling formwork of fiber composite material, in the reinforced concrete structure with cathodic protection function of the present invention, plays the role of combined structural material and auxiliary anode, under the combined action of long-term load, environmental factors and protective current , has reliable mechanical properties, electrochemical properties and durability, etc., and can support new structural systems while exerting the functions of structural performance enhancement and cathodic protection.

Due to the utilization of the mechanical properties and electrochemical properties of the multifunctional non-demolition formwork of fiber composite materials, the multifunctional non-demolition formwork of fiber composite materials plays the dual role of combined structural materials and auxiliary anodes in the new structural system, so that the structural properties The two functions of reinforcement and cathodic protection are effectively integrated in one system. The system adds a cathodic protection system on the basis of the traditional composite structure, which not only inherits the advantages of the composite structure, but also obtains the cathodic protection of the structure.

Preferably, a control device and a detection device can also be added to the reinforced concrete structure with its own cathodic protection function shown in Figure 2, and the control device is connected in series in the loop formed above to control the current in the loop ; and the detection device is connected between the steel bar and the concrete, and is used to detect the corrosion condition of the steel bar.

In the reinforced concrete structure shown in Figure 2, the fiber composite material multifunctional non-demolition formwork, and the CFRP cloth inside it serves as the link connecting the two systems of structural reinforcement and cathodic protection, and serves as both a structural reinforcement material and an auxiliary anode. The role of the conductive cementitious material can transmit the protective current, so that the reinforced concrete main structure can be better protected from the beginning of construction.

The CFRP material of the present invention not only has good mechanical properties, but also has good conductivity as the main component of the CFRP material, and the electrode potential is close to the electrochemical properties of noble metals. In the present invention, on the one hand, the CFRP material is used as a reinforcing material and the structural engineering is jointly stressed to improve the mechanical properties of the structure; on the other hand, it is used as an auxiliary anode to apply external current cathodic protection to the structure to protect the structure.

The fiber composite material multifunctional dismantling-free formwork of the present invention can realize the organic combination of structural reinforcement and cathodic protection in one system, and achieve the effect of treating both symptoms and root causes. Compared with traditional wooden or steel formwork, this fiber composite board has high strength, corrosion resistance, good electrical conductivity and good durability. In the construction process, the demolition-free formwork of the invention is used, so that the main structure can be better protected from the beginning, and the high economic cost required for later restoration can be avoided.

In the fiber composite material multifunctional non-demolition formwork-reinforcement-concrete combined structure system of the present invention, the non-demolition formwork 1, reinforcement bars 2 and concrete 3 are simultaneously poured into a whole in the construction stage.

Specifically, an embodiment of the present invention provides a method for constructing a reinforced concrete structure with cathodic protection function, as shown in Figure 3, including steps:

S100, preparing a formwork without dismantling;

S200. The non-demolition formwork (multifunctional non-demolition formwork of fiber composite material) forms a formwork structure;

S300. Fasten the steel bars in the formwork structure, electrically connect the steel bars, and then pour concrete;

S400. Connect an external power supply to electrically connect steel bars, concrete, non-dismantling formwork, and external power supply in sequence, and electrify the structure as a whole, so that a current loop is formed between the steel bars and the non-dismantling formwork, that is, the self-contained cathodic protection function is obtained. reinforced-concrete structure.

Further, the step S300 also includes: before pouring concrete, detecting and ensuring good electrical connection of steel bars in the formwork structure; after pouring concrete, curing the poured concrete.

The reinforced concrete structure with cathodic protection function in the present invention can be of various shapes, not only limited to beam structure, but also can be of various shapes of reinforced concrete structures requiring protection, such as circular members.

The present invention provides a fiber composite material multifunctional non-demolition formwork-rebar-concrete composite structure system with cathodic protection function, based on the excellent mechanical properties, electrochemical properties and designability of the fiber composite multifunctional non-demolition formwork , using the fiber composite multifunctional non-demolition formwork as the dual purpose of composite structural material and auxiliary anode, so as to integrate the two functions of structural performance enhancement and cathodic protection into a new composite structural system. This structural system not only inherits the advantages of fiber-reinforced composite material-concrete composite structure, but also can apply a small current to the steel bars inside the concrete through the CFRP material, achieving the purpose of cathodic protection of the structure. This structural system can be applied in the case where the interior of the concrete material is rich in corrosive media or the external environment is harsh, and the steel bars of the structure can still be adequately protected, such as the representative sea sand concrete. Moreover, the non-demolition formwork that plays a dual role in the composite structure is directly poured into a whole with the concrete during the construction stage, which saves the labor of installing the cathodic protection system.

The invention not only provides a novel concrete durability guarantee strategy for the field of construction engineering, but also provides a safe and economical sea sand concrete application technology, which has broad engineering application prospects and great social significance.

The embodiment of the present invention also provides a method for preparing the fiber composite multifunctional non-demolition formwork (demolition-free formwork) as described above, as shown in Figure 4, including the steps:

S110, preparing a gelling material with a conductive function. The gelling material is used for sticking and wrapping the CFRP material.

Wherein, in the step S110, the cementitious material layer is composed of cementitious material, and the cementitious material comprises the following components in parts by weight: 1 part of cement, 0.3-0.7 part of water, 0.1-0.3 part of silicon powder 0.1-0.5 parts of polymer, 0.004-0.01 parts of plasticizer, 0.002-0.030 parts of water reducing agent and 0.005-0.03 parts of carbon fiber. Wherein, the polymer can be redispersible powder or styrene-butadiene latex.

For example, preferably, the cementitious material includes the following components in parts by weight: 1 part of cement, 0.5 part of water, 0.1 part of silicon fume, 0.3 part of redispersible powder, 0.008 part of plasticizer, 0.005 part of water reducer parts and 0.015 parts of carbon fiber filaments, wherein the carbon fiber filaments are 2mm long carbon fiber filaments. After the above components are mixed by machine, the prepared cement-based inorganic gelling material has a compressive strength of 50MPa, a flexural strength of 8MPa, and a conductivity of less than 0.1S/m.

S120. Pour cementitious material at the bottom of the mold of the cleaned free formwork to form the first cementitious material layer; lay fiber material on the first cementitious material layer to form the first fiber material layer; Pour cementitious material on one layer of fiber material to form the second layer of cementitious material; lay fiber material on the second layer of cementitious material to form the second layer of fiber material; and so on, in the last layer of fiber material Pour cementitious material on top of each other to form the last cementitious material layer, and then scrape it flat along the mold to form a slab; wherein at least one layer of the fiber material is made of carbon fiber reinforced composite material.

For example, when preparing the fiber composite multifunctional non-dismantling formwork as described in Figure 1, the cementitious material is poured at the bottom of the mold of the cleaned non-dismantling formwork to form the first layer of cementitious material layer 11; Lay carbon fiber cloth (CFRP cloth) on the cement material layer 11 to form the first layer of fiber material layer 12; pour cement material on the first layer of fiber material layer 12 to form the second layer of cement material layer 13; Spread carbon fiber cloth on the first layer of cementitious material layer 13 to form the second layer of fiber material layer 14; pour cementitious material on the second layer of fiber material layer 14 to form the third layer of cementitious material layer 15, and then scrape it flat along the mold, A slab is formed.

S130. Cover the mold top plate on the slab blank, perform pre-press molding to form a slab; perform curing and curing (film-locking curing) on the slab, so that the slab is cured into a formwork.

Wherein, the step S130 also includes the preparation of the mould: prepare the mould, which does not need to dismantle the formwork, and clean the mould, to ensure its cleanliness.

S140. Demoulding, taking out the formwork, and then continuing to maintain at room temperature for a period of time to obtain the multifunctional non-dismantling formwork of the fiber composite material.

Further, in the step S130, the pre-compression pressure for pre-compression molding is 4-10KN. The preferred preload pressure is 5KN.

Further, in the step S130, the pre-compression time for pre-compression molding is 1-3 hours. The preferred pre-pressing time is 2h.

Further, in the step S130, the temperature for curing and curing the plate is 20-25°C.

Further, in the step S130, the time for curing and curing the plate is 46-50 hours, for example, 48 hours.

Further, in the step S140, the curing time at room temperature is 5-10 days. The preferred normal temperature curing time is 7 days.

The multifunctional non-dismantling formwork of fiber composite material provided by the present invention adopts the CFRP material which can be used as auxiliary anode material and structural reinforcement as the main body, and selects the gelling material with good electrical conductivity as the adhesive. Cathodic protection can be carried out for reinforced concrete structures from the initial stage of construction, fundamentally avoiding structural deterioration caused by corrosion of steel bars.

In addition, under the premise of fully considering the combined structure design and cathodic protection requirements, CFRP profiles of different types and cross-section types can be selected according to the cross-section type of the component and the implementation position, working environment, construction operation and other factors, and the fiber composite material can be flexibly designed. The cross-section type of the functional non-demolition formwork, the number of layers of the conductive gel material layer and the fiber material layer, and the production of formwork with different thicknesses are suitable for use in different parts of different types of structures.

The fiber composite multifunctional non-dismantling formwork of the present invention is composed of multi-layer carbon fiber cloth and cement-based inorganic gelling material, which meets the requirements of building formwork. It has simple structure, simple process, stable quality, strong practicability, and It is convenient, has good prospects for popularization and application, and has remarkable economic and social benefits.

In summary, the present invention provides a reinforced concrete structure with cathodic protection function and its construction method. The reinforced concrete structure with cathodic protection function is directly poured into a whole during the construction stage, and it has a cathodic protection function. The protection function saves the labor of installing the cathodic protection system, improves the safety and durability of the concrete structure, and can be used in situations where the interior of the concrete material is rich in corrosive media or the external environment is harsh, reducing the requirements for the purification of building materials and material costs.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. a kind of reinforced concrete structure of included cathodic protection function characterized by comprising the mould being made of non-dismantling formwork Hardened structure, the concrete being cast in formwork structure, more reinforcing bars being embedded in concrete, and it is constant for applying to reinforcing bar The external power supply of the electric current of size；

The fibrous material layer that the non-dismantling formwork is arranged by Spaced and the cementitious material layer with conducting function are constituted；Its In, at least one layer of fibrous material layer is made of carbon fibre reinforced composite；The upper and lower ends of the non-dismantling formwork are institute Cementitious material layer is stated, every layer of fibrous material layer is wrapped between the cementitious material layer of adjacent two layers；

It is electrically connected between the more reinforcing bars；The reinforcing bar, concrete, non-dismantling formwork, external power supply are successively electrically connected；

The non-dismantling formwork, for from disassembly, and yin can be constituted as the template in reinforced concrete structure building course System is protected in pole, protects the reinforcing bar being embedded in concrete, not only solves the problems, such as steel bar corrosion, but also can replace wooden false form It uses；

The cementitious material layer is made of cementitious material, the cementitious material by weight, including following components: 1 part of cement, 0.3~0.7 part of water, 0.1~0.3 part of silicon powder, 0.1~0.5 part of high molecular polymer, 0.004~0.01 part of plasticiser, water-reducing agent 0.002~0.030 part and 0.005~0.03 part of carbon fiber wire；

The cementitious material layer with a thickness of 0.5mm~10mm；

The non-dismantling formwork is a kind of based on CFRP material, conductive cementitious material to be used compound to exempt from for the multi-functional of carrier Form removal；It can be simultaneously as the impressed current anode and structural strengthening plate in cathodic protection system, while satisfaction prevents reinforcing bar Corrosion and structural strengthening；

The carbon fibre reinforced composite is one of carbon cloth, carbon fiber board.

2. the reinforced concrete structure of included cathodic protection function according to claim 1, which is characterized in that the fiber Material layer is fiber cloth, the one of which in fiberboard.

3. the reinforced concrete structure of included cathodic protection function according to claim 2, which is characterized in that the carbon fiber Wei Bu is carbon fiber mesh fabric；The fiber cloth is fibrous mesh cloth.

4. a kind of method of construction of the reinforced concrete structure of included cathodic protection function as described in claim 1, feature It is, comprising steps of

A, non-dismantling formwork is prepared；

B, formwork structure is formed with non-dismantling formwork；

C, reinforcing bar is tied in formwork structure, will be electrically connected between reinforcing bar, then casting concrete；

D, external power supply is connected, reinforcing bar, concrete, non-dismantling formwork, external power supply is electrically connected successively, obtains the included yin The reinforced concrete structure of pole safeguard function.

5. the method for construction of the reinforced concrete structure of included cathodic protection function according to claim 4, feature exist In the step A is specifically included:

A1, the cementitious material with conducting function is prepared；

A2, non-dismantling formwork after the cleaning mold bottom pour cementitious material, form first layer cementitious material layer；In first layer It is laid with fibrous material on cementitious material layer, forms first layer fibrous material layer；Gelling is poured on first layer fibrous material layer Material forms second layer cementitious material layer；It is laid with fibrous material on second layer cementitious material layer, forms second layer fibrous material Layer；And so on, cementitious material is poured on the last layer fibrous material layer, forms the last layer cementitious material layer, then edge Mould strikes off, and forms plate embryo；Wherein, at least one layer of fibrous material layer is made of carbon fibre reinforced composite；

A3, in plate embryo upper cover upper mold top plate, carry out pre-molding, form plate；Curing conservation is carried out to plate, consolidates plate Turn to template；

A4, demoulding take out template, and after then proceeding to room temperature maintenance a period of time, non-dismantling formwork is made.

6. the method for construction of the reinforced concrete structure of included cathodic protection function according to claim 5, feature exist In in the step A2, the cementitious material layer is made of cementitious material, and the cementitious material is by weight, including following Component: 1 part of cement, 0.3~0.7 part of water, 0.1~0.3 part of silicon powder, 0.1~0.5 part of high molecular polymer, plasticiser 0.004~ 0.01 part, 0.002~0.030 part of water-reducing agent and 0.005~0.03 part of carbon fiber wire.

7. the method for construction of the reinforced concrete structure of included cathodic protection function according to claim 5, feature exist In in the step A3, the preload pressure for carrying out pre-molding is 4~10KN, and squeeze time is 1~3h.

8. the method for construction of the reinforced concrete structure of included cathodic protection function according to claim 5, feature exist In in the step A3, the temperature for carrying out curing conservation to plate is 20~25 DEG C, and curing time is 46~50h.

9. the method for construction of the reinforced concrete structure of included cathodic protection function according to claim 5, feature exist In in the step A4, the time of room temperature maintenance is 5~10 days.

10. the method for construction of the reinforced concrete structure of included cathodic protection function according to claim 4, feature exist In the step C further include: before casting concrete, detect and ensure that the electrical connection of reinforcing bar in formwork structure is good；It is pouring After building concrete, the concrete after pouring is conserved.