Corrosion testing apparatus for reinforced concrete members

Abstract

An embodiment of the present utility model provides a rust test device for reinforced concrete members, belonging to the field of test measurement. The rust test device includes: a box body containing an electrolyte solution; an isolation cover plate covering the box body, the isolation cover plate includes at least one limiting grid for accommodating the reinforced concrete member; and a power-on device including a power source and a negative connection wire and a positive connection wire connected to the power source. Among them, the positive connection wire is electrically connected to the longitudinal steel bar in the reinforced concrete member, and the negative connection wire is electrically connected to the electrolyte solution. Through the above technical solution, the present utility model can support multiple groups of rust tests on reinforced concrete members simultaneously; the test members are physically isolated by the isolation cover plate, reducing the test error caused by the倾倒 of the test members. It should be noted that the "倾倒" in the original text is not a standard Chinese word. If it is a misspelling, it should be corrected to the correct word according to the actual situation before translation to ensure the accuracy of the translation. Here, it is tentatively translated as "倾倒" for the purpose of completing the translation task based on the existing text.

Description

Technical Field

[0001] This utility model relates to the field of experimental measurement technology, and specifically to a corrosion testing device for reinforced concrete components. Background Technology

[0002] The durability of reinforced concrete members has been a long-standing issue, with steel corrosion being one of the main problems. To address this issue, numerous scholars both domestically and internationally have employed electrochemical methods. The basic principle involves using the reinforced concrete member under test and a cathode plate as a galvanic cell, and utilizing chloride ions in the electrolyte solution to induce electrochemical corrosion. Therefore, electrochemical corrosion testing has become an important approach for studying steel corrosion in reinforced concrete members.

[0003] In electrical corrosion tests on reinforced concrete beams and columns, the components often tilt or collapse due to contact or impact from external objects. This can increase test errors, or even disrupt the test's progress or cause it to fail altogether. Therefore, it is necessary to design an anti-tipping electrical corrosion testing device for reinforced concrete components. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a corrosion testing device for reinforced concrete components, which can effectively avoid the problem of test components tipping over due to external loads or other uncertain factors.

[0005] To achieve the above objectives, this utility model provides a corrosion testing device for reinforced concrete components. The corrosion testing device includes: a box containing an electrolyte solution; an isolation cover covering the box, the isolation cover including at least one limiting cell for accommodating the reinforced concrete component; and an electrical device including a power source and a negative and positive connecting wires connected to the power source, wherein the positive connecting wire is electrically connected to the longitudinal reinforcing bars in the reinforced concrete component, and the negative connecting wire is electrically connected to the electrolyte solution.

[0006] Optionally, the isolation cover includes multiple limiting compartments for accommodating multiple reinforced concrete components, wherein each limiting compartment is provided with a set of energizing devices and accommodates a reinforced concrete component.

[0007] Optionally, the isolation cover includes two limiting compartments, four limiting compartments, six limiting compartments, or eight limiting compartments.

[0008] Optionally, the power supply device further includes a conductive rod, which is inserted into the electrolyte solution and fixed in the tank, and the negative electrode connecting wire is electrically connected to the electrolyte solution through the conductive rod.

[0009] Optionally, the isolation cover includes a transverse structure and two longitudinal structures to form six identically sized limiting cells. The energizing device also includes six conductive rods, each of which passes through a limiting cell, is inserted into the electrolyte solution, and is fixed to the side wall of the tank.

[0010] Optionally, the outward extension length of the longitudinal reinforcing bars in the reinforced concrete member is greater than a set value.

[0011] Optionally, the enclosure is made of colorless and transparent material, and the isolation cover is made of colorless and transparent material.

[0012] Optionally, the housing may have graduations.

[0013] Optionally, the housing may further include an inlet valve and a drain valve, wherein the drain valve is located at the bottom of the housing.

[0014] Optionally, the inlet valve is a flow control valve used to control the inlet rate and flow rate of the electrolyte solution, and the drain valve includes a sealing structure.

[0015] Through the above technical solution, this utility model can support the simultaneous conduct of multiple sets of corrosion tests on reinforced concrete components; by physically isolating the test components with isolation cover plates, the test error caused by the tilting of the test components is reduced.

[0016] Other features and advantages of this utility model embodiment will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a top view of a corrosion testing device for reinforced concrete components according to the present invention.

[0019] Figure 2 This is a side view of a corrosion testing device for reinforced concrete components according to the present invention.

[0020] Key reference numerals:

[0021] 1-Box body; 2-Electrolyte solution; 3-Reinforced concrete component; 4-Copper rod; 5-External power supply; 6-Negative connection wire; 7-Positive connection wire; 8-Isolation cover; 9-Inlet valve; 10-Drain valve. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0023] Firstly, a corrosion testing device for reinforced concrete components is provided. The corrosion testing device may include: a box containing an electrolyte solution; an isolation cover covering the box, the isolation cover including at least one limiting cell for accommodating the reinforced concrete component; and an electrical device including a power source and a negative and positive connecting wires connected to the power source, wherein the positive connecting wire is electrically connected to the longitudinal reinforcing bars in the reinforced concrete component, and the negative connecting wire is electrically connected to the electrolyte solution.

[0024] Specifically, you can refer to, for example Figure 1 , Figure 2 The corrosion test apparatus shown consists of: 1, the chamber; 2, the electrolyte solution; 3, the reinforced concrete component; 4, the copper rod; 5, the external power supply; 6, the negative terminal connecting wire; 7, the positive terminal connecting wire; 8, the isolation cover plate; 9, the water inlet valve; and 10, the drain valve.

[0025] In one embodiment, the isolation cover 8 may include multiple limiting compartments for accommodating multiple reinforced concrete components 3. For example, the isolation cover 8 may include two, four, six, or eight limiting compartments, depending on actual needs. Figure 1 As shown, the isolation cover 8 may include one transverse structure and two longitudinal structures to form six identical (or slightly different, the same below) limiting cells. It is understood that, by analogy, if there is only one transverse structure or one longitudinal structure, two identical limiting cells can be formed; if there is one transverse structure and one longitudinal structure, four identical limiting cells can be formed; if there is one transverse structure and three longitudinal structures, eight identical limiting cells can be formed; and if there are two transverse structures and two longitudinal structures, nine identical limiting cells can be formed. This application does not limit this. Each limiting cell contains a set of energizing devices and accommodates a reinforced concrete component. Additionally, the isolation cover 8 should be equipped with a horizontal limiting device to constrain the horizontal displacement of the isolation cover.

[0026] In one embodiment, the energizing device may further include a conductive rod, such as a copper rod 4, which can be inserted into the electrolyte solution 2 and fixed inside the tank 1. The negative terminal connecting wire 6 is electrically connected to the electrolyte solution through the conductive rod. Preferably, to prevent the copper rod 4 from swinging freely under the impact of water flow, the copper rod 4 should be physically fixed to the tank 1 before water is supplied. For example, such as... Figure 1As shown, the energizing device may also include six conductive rods, each of which passes through a limiting grid and is inserted into the electrolyte solution 2 and fixed to the side wall of the box 1. This ensures that each reinforced concrete component 3 has a corresponding energizing device, avoiding experimental deviations caused by sharing conductive rods.

[0027] In one embodiment, when the reinforced concrete member 3 is prepared, the longitudinal reinforcing bars should be reserved with a sufficiently long overhang, that is, the overhang length of the longitudinal reinforcing bars in the reinforced concrete member 3 is greater than a set value, such as 2-5 cm, so as to facilitate connection with an external power source through a wire.

[0028] In one embodiment, the housing 1 can be made of a colorless and transparent material to facilitate observation of the test phenomena during the power-on process. Similarly, the isolation cover 8 can also be made of a colorless and transparent material, which can also facilitate observation of the test phenomena during the power-on process.

[0029] On the other hand, the applicant also discovered that if the component is directly removed from the solution and air-dried after the electro-corrosion test, the external load during the extraction process may have a local impact on the development of cracks in the component, thereby increasing the test error. Based on the above, it is necessary to design an anti-tipping electro-corrosion test device for reinforced concrete components and provide an air-drying environment for the component after the test to reduce the test error that may be caused by external disturbance.

[0030] In one embodiment, the tank 1 may further include an inlet valve 9 (or water supply valve) and a drain valve 10. The drain valve 10 is located at the bottom of the tank 1. In this case, the tank 1 should have graduations to facilitate quantifying the volume of electrolyte solution added, and also to serve as a reference for opening and closing the valves during water supply and drainage.

[0031] In one embodiment, the inlet valve 9 can be a flow control valve used to control the inlet rate and flow rate of the electrolyte solution. That is, the inlet valve 9 should be connected to the pre-prepared electrolyte solution and be able to effectively control the flow rate of the solution entering the tank 1. The drain valve 10 should have sufficient sealing function. That is, the drain valve 10 can include a sealing structure, and when the drain valve 10 is tightened, no air should enter the tank 1 through the drain outlet. Before the test begins, water can be supplied through the inlet valve, and after the test, water can be drained through the drain valve, thereby controlling the flow rate of water supply and drainage, reducing test errors caused by uneven flow rates, and allowing the electrolyte solution to air dry in place after it is completely drained, reducing test errors that may be caused by external disturbances.

[0032] In summary, the purpose of this invention is to design an anti-tipping electrostatic corrosion testing device for reinforced concrete components. The device may include a housing, an electrolyte solution, a reinforced concrete component, a copper rod, an external power supply, a negative terminal connecting wire, a positive terminal connecting wire, an isolation cover, a water inlet valve, and a drain valve. Therefore, this invention can effectively avoid the problem of test components tipping over due to external loads or other uncertain factors. Simultaneously, it reduces test errors that may be caused by external disturbances.

[0033] In addition, this application also provides a construction method for an electrical corrosion test device for anti-tipping reinforced concrete components, which can be referred to as follows: Figure 1 , Figure 2 The corrosion test apparatus shown consists of: 1, the chamber; 2, the electrolyte solution; 3, the reinforced concrete component; 4, the copper rod; 5, the external power supply; 6, the negative terminal connecting wire; 7, the positive terminal connecting wire; 8, the isolation cover plate; 9, the water inlet valve; and 10, the drain valve.

[0034] Specifically, the construction method of this application may include the following steps S1-S8:

[0035] Step S1: Connect the negative terminal connecting wire 6 to the copper rod 4, and fix the copper rod 4 to the housing 1.

[0036] Step S2: First, place the reinforced concrete component 3 at the designated position in the box 1;

[0037] Step S3: Place the isolation cover 8 to make the isolation cover 8 and the box 1 a whole;

[0038] Step S4: Slowly open the water inlet valve 9 to allow the electrolyte solution 2 to flow slowly and evenly into the tank 1. At the same time, observe the scale line of the tank 1 until the level of the electrolyte solution 2 reaches the preset value. It is worth noting that at this time, the drain valve 10 should be kept closed.

[0039] Step S5: Connect the negative terminal connecting wire 6 to the negative terminal of the external power supply 5 to form the cathode of the galvanic cell, and connect the positive terminal connecting wire 7 to the reinforced concrete component 3 and the positive terminal of the external power supply 5 to form the anode of the galvanic cell.

[0040] Step S6: Turn on the external power supply 5, adjust the current value to the preset value, conduct the corrosion test according to the preset power-on time, observe the test phenomena in the chamber 1 regularly, and make records.

[0041] Step S7: After the power is turned on, slowly open the drain valve 10 to allow the electrolyte solution 2 to flow out of the tank 1 slowly and evenly until the solution in the tank 1 is completely drained.

[0042] Step S8: After the reinforced concrete member 3 has completely dried, measure parameters such as the apparent crack width and steel corrosion rate of the reinforced concrete member 3.

[0043] As can be seen, this utility model relates to an anti-tipping reinforced concrete component electrostatic corrosion test device and its construction method, specifically applicable to the measurement of the steel corrosion rate of reinforced concrete components. It mainly includes a box, an electrolyte solution, a reinforced concrete component, a copper rod, an external power supply, a negative electrode connecting wire, a positive electrode connecting wire, an isolation cover, a water inlet valve, and a drain valve. The copper rod is fixed to the box; the reinforced concrete component is placed in a designated position within the box; the isolation cover and the box form a single unit; the water inlet valve is opened to slowly and uniformly introduce the electrolyte solution; the negative electrode connecting wire is connected to the negative terminal of the external power supply, forming the cathode of a galvanic cell, and the positive electrode connecting wire is connected to the positive terminal of the external power supply, forming the anode of a galvanic cell; the external power supply is turned on, the current value is adjusted to a preset value, and the test phenomena are observed; after the energization is completed, the drain valve is slowly opened to drain the electrolyte solution completely; after the reinforced concrete component is completely air-dried, parameters such as the apparent crack width and the steel corrosion rate are measured.

[0044] Therefore, the device of this utility model can conduct multiple sets of corrosion tests on reinforced concrete components simultaneously; the test components are physically isolated by the isolation cover plate to reduce test errors caused by the tilting of the test components; in addition, the flow rate of water supply and drainage can be controlled by the valve to reduce test errors caused by uneven flow rate of water supply and drainage; after the test, a shaded drying environment is provided for the test to reduce test errors that may be caused by external disturbances.

[0045] In summary, the advantages of this utility model are as follows:

[0046] 1. A test device for testing the corrosion of anti-tipping reinforced concrete components under electrical current is provided;

[0047] 2. Multiple sets of corrosion tests on reinforced concrete components can be conducted simultaneously;

[0048] 3. Physically isolate the test components by using isolation covers to reduce test errors caused by the tipping of the test components;

[0049] 4. Control the flow rate of water supply and drainage through valves to reduce test errors caused by uneven flow rates;

[0050] 5. After the test, provide a shaded environment to reduce test errors that may be caused by external disturbances.

[0051] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0052] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A corrosion test device for a reinforced concrete member, characterized by, The corrosion testing apparatus includes: The tank contains an electrolyte solution; An isolation cover plate, covering the housing, the isolation cover plate including at least one limiting compartment for accommodating the reinforced concrete member; and An energizing device includes a power source and a negative terminal connecting wire and a positive terminal connecting wire connected to the power source, wherein the positive terminal connecting wire is electrically connected to the longitudinal steel bars in the reinforced concrete member, and the negative terminal connecting wire is electrically connected to the electrolyte solution.

2. The corrosion testing apparatus according to claim 1, characterized in that, The isolation cover includes multiple limiting compartments for accommodating multiple reinforced concrete components, wherein each limiting compartment is equipped with a set of power supply devices and accommodates a reinforced concrete component.

3. The corrosion testing apparatus according to claim 2, characterized in that, The isolation cover includes two limit compartments, four limit compartments, six limit compartments, or eight limit compartments.

4. The corrosion testing apparatus according to any one of claims 1-3, characterized in that, The power supply device also includes a conductive rod, which is inserted into the electrolyte solution and fixed in the tank. The negative electrode connecting wire is electrically connected to the electrolyte solution through the conductive rod.

5. The corrosion testing apparatus according to claim 4, characterized in that, The isolation cover includes a transverse structure and two longitudinal structures to form six identical limiting cells. The energizing device also includes six conductive rods, each of which passes through a limiting cell, is inserted into the electrolyte solution, and is fixed to the side wall of the tank.

6. The corrosion testing apparatus according to claim 1, characterized in that, The longitudinal reinforcement bars in the reinforced concrete member have an overhang length greater than a set value.

7. The corrosion testing apparatus according to claim 1, characterized in that, The enclosure is made of colorless and transparent material, and the isolation cover is made of colorless and transparent material.

8. The corrosion testing apparatus according to claim 7, characterized in that, The box is marked with graduations.

9. The corrosion testing apparatus according to claim 1, 7, or 8, characterized in that, The enclosure also includes an inlet valve and a drain valve, wherein the drain valve is located at the bottom of the enclosure.

10. The corrosion testing apparatus according to claim 9, characterized in that, The inlet valve is a flow control valve used to control the inlet rate and flow rate of the electrolyte solution, and the drain valve includes a sealing structure.

Images