Electrode structure and device for concrete electric flux test

Abstract

The utility model discloses an electrode structure and device for a concrete electric flux test. The electrode structure comprises an electrode body made of silver-nickel alloy; the electrode body is of a sheet-shaped structure, and a plurality of holes are distributed in the electrode body and are distributed along a radial path of the sheet-shaped structure; the radial path is formed by arranging a plurality of concentric circle paths with the radiuses sequentially increased by taking the center of the sheet structure as the circle center, and the holes are formed along the concentric circle paths. The device comprises at least two electrode structures for the concrete electric flux test. The electrode body made of the silver-nickel alloy has good conductivity and corrosion resistance, the hardness of the electrode body is higher than that of a copper material used in the prior art, a base plate does not need to be arranged when the electrode body is used for a concrete electric flux test, and the device is simplified on the basis of ensuring the test accuracy; and the electrode structure is also suitable for a concrete electric flux test.

Description

Technical Field

[0001] This application belongs to the field of concrete durability performance testing technology, specifically relating to an electrode structure and device for concrete electrical flux testing. Background Technology

[0002] The electrical flux of concrete is a crucial indicator for evaluating its resistance to chloride ion penetration. In electrical flux testing, the electrode-based testing apparatus directly impacts the accuracy and reliability of the results. Traditional electrode materials used for concrete electrical flux testing, such as stainless steel and copper, suffer from problems such as low conductivity, insufficient corrosion resistance, or the softness and susceptibility to deformation of copper, leading to errors in test results and short electrode lifespan. Figure 1 As shown, this is a test apparatus used in the prior art for testing the long-term performance and durability of concrete. It uses a copper mesh 3 as an electrode and a copper pad 9 as a reinforcing component.

[0003] Therefore, there is an urgent need to propose an electrode structure and device for concrete electrical flux testing, which can improve the durability of the electrode and extend the service life of the testing device while ensuring the accuracy of the test results. Utility Model Content

[0004] In view of the shortcomings or deficiencies of the prior art, the technical problem to be solved by this application is to provide an electrode structure and device for concrete electrical flux testing.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0006] This application proposes an electrode structure for testing the electrical flux of concrete, comprising: an electrode body made of silver-nickel alloy; the electrode body is a sheet-like structure with multiple holes distributed thereon, the holes being arranged along a radial path of the sheet-like structure; the radial path is a series of concentric circular paths with increasing radii centered on the center of the sheet-like structure, the holes being arranged along the concentric circular paths.

[0007] Optionally, in the above-described electrode structure, the holes on the concentric circular paths are equidistantly arranged.

[0008] Optionally, in the above-described electrode structure, the radii of the plurality of concentric circular paths increase at equal intervals.

[0009] Optionally, in the above-described electrode structure, the center of the sheet-like structure is also provided with the hole.

[0010] Optionally, in the above-described electrode structure, the thickness of the electrode body is 1.5 mm ± 0.1 mm.

[0011] Optionally, in the above-described electrode structure, the electrode body is a circular structure.

[0012] Optionally, in the above-described electrode structure, the surface of the electrode body is provided with an oxide film layer structure.

[0013] This application also proposes an apparatus for testing the electrical flux of concrete, comprising at least two electrode structures for testing the electrical flux of concrete as described above.

[0014] Optionally, the above-described device further includes: a power supply, a test chamber, a resistor, and a voltmeter. The positive and negative terminals of the power supply are respectively connected to the two electrode structures. The two electrode structures are located in the test chamber and are respectively disposed on opposite sides of the test piece. The resistor is disposed between the power supply and the electrodes, and the voltmeter is connected in parallel with the resistor.

[0015] Optionally, in the above-described device, a receiving cavity for holding the test reagent is formed between the two electrodes and the test tank.

[0016] Compared with the prior art, this application has the following technical effects:

[0017] The electrode body made of silver-nickel alloy in this application has good conductivity and corrosion resistance, and its hardness is higher than that of copper material used in the prior art. When used for concrete electric flux testing, no pad is required. While ensuring the accuracy of the test, it simplifies the device and is more suitable as an electrode structure for concrete electric flux testing. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 : A schematic diagram of the existing technology;

[0020] Figure 2 : A schematic diagram of the electrode structure in Embodiment 1 of this application;

[0021] Figure 3 : A schematic diagram of the device in Embodiment 2 of this application;

[0022] In the diagram: 1. Power supply; 2. Test tank; 3. Copper mesh; 4. Detector; 5. Sodium chloride solution; 6. Sodium hydroxide solution; 7. Resistor; 8. Voltmeter; 9. Copper pad; 10. Electrode body; 11. Hole; 12. Receiving cavity. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Example 1

[0025] like Figure 2 As shown, one embodiment of this application proposes an electrode structure for concrete electrical flux testing, comprising: an electrode body 10 made of silver-nickel alloy; the electrode body 10 is a sheet-like structure with a plurality of holes 11 distributed thereon, the holes 11 being arranged along a radial path of the sheet-like structure; the radial path is a plurality of concentric circular paths with successively increasing radii centered on the center of the sheet-like structure, the holes 11 being arranged along the concentric circular paths.

[0026] In this embodiment, the electrode body 10, made of a silver-nickel alloy, possesses excellent conductivity and corrosion resistance, and its hardness is higher than that of copper materials used in the prior art. When used for concrete electrical flux testing, it eliminates the need for a backing plate, simplifying the apparatus while ensuring test accuracy and making it more suitable as an electrode structure for concrete electrical flux testing. Furthermore, the electrode body 10 in this embodiment has a sheet-like structure with multiple holes 11 arranged along a radial path to ensure sufficient contact between the detection element 4 and the reagent. Specifically, the radial path consists of four concentric circular paths with progressively increasing radii, centered on the center of the sheet-like structure. This arrangement ensures that the positions of the holes 11 corresponding to the two electrodes are as symmetrical as possible, reducing errors in the testing apparatus. Of course, those skilled in the art are motivated to adaptively adjust the number of concentric circular paths according to actual porosity requirements.

[0027] Optionally, the silver-nickel alloy contains 75% silver and 25% nickel, a ratio that gives the silver-nickel alloy good corrosion resistance, high strength, and electrical conductivity.

[0028] Specifically, the electrode body 10 has a circular structure. The circular structure of the electrode body 10 is more conducive to the symmetrical arrangement between the two electrodes when applied to the device. In addition, the detection element 4 is usually a cylindrical structure. The circular structure is also more economical. In this embodiment, the two electrode structures are respectively set on the two end faces of the detection element 4, with a diameter of 90mm and an area slightly larger than the end face area of ​​the detection element 4 to ensure the accuracy of the test.

[0029] Optionally, the thickness of the electrode body 10 is 1.5mm ± 0.1mm. Within this thickness range, the electrode body 10 can ensure its rigidity and prevent deformation during application. Excessive thickness will lead to increased costs.

[0030] Optionally, the holes 11 on the concentric circular paths are equidistant; the radii of the multiple concentric circular paths are increased equidistantly. The above two equidistant setting methods are adopted to further ensure the symmetry of the holes 11 of the two electrode structures in the device, and to provide a guarantee for the accuracy of detection.

[0031] Optionally, the sheet-like structure also has a hole 11 at its center, the hole 11 having a diameter of 6 mm, to further ensure that the detection element 4 is in full contact with the reagent.

[0032] Specifically, the surface of the electrode body 10 is provided with an oxide film structure to ensure the corrosion resistance of the electrode structure and improve its stability and service life. In this embodiment, the oxidation process parameters for forming the oxide film structure are: temperature of 250-300℃ and time of 10-20 min.

[0033] Example 2

[0034] like Figure 3 As shown, another embodiment of this application proposes an apparatus for testing the electrical flux of concrete, including the electrode structure for testing the electrical flux of concrete described above.

[0035] This embodiment uses an electrode body 10 made of silver-nickel alloy, which enables the device for concrete electrical flux testing to have good conductivity and corrosion resistance while ensuring testing accuracy. It is more suitable for the testing environment of concrete electrical flux testing, and its hardness is higher than that of copper material used in the prior art. When used for concrete electrical flux testing, there is no need to set a pad, which simplifies the device.

[0036] Specifically, the device for testing the electrical flux of concrete further includes: a power supply 1, a test tank 2, a resistor 7, and a voltmeter 8. The positive and negative terminals of the power supply 1 are respectively connected to the two electrode structures. The two electrode structures are located in the test tank 2 and are respectively arranged on opposite sides of the test piece 4. The resistor 7 is arranged between the power supply 1 and the electrode structures. The voltmeter 8 is connected in parallel with the resistor 7, thereby constructing a device for testing the electrical flux of concrete with the electrode structure described above, reducing the copper pad 9 in the prior art, and simplifying the device.

[0037] Optionally, one side of the electrode body 10 is in contact with the detection element 4. To ensure good contact between the electrode body 10 and the detection element 4, the surface of the electrode body 10 is polished. The other side of the electrode body 10 is connected to a wire connection interface, which is a threaded connection or a plug-in connection. In this embodiment, a threaded connection is used to ensure the stability of the connection.

[0038] Specifically, each of the two electrodes forms a receiving cavity 12 for holding the test reagent between it and the test tank 2.

[0039] In this embodiment, the two cavities 12 respectively contain sodium chloride reagent and sodium hydroxide reagent for conducting concrete electrical flux tests.

[0040] The concrete specimen to be tested was vacuum-saturated with water and then installed in the device proposed in this embodiment. One chamber 12 contained a sodium chloride solution with a mass concentration of 3.0%, and its corresponding electrode structure was connected to the negative terminal of power supply 1. The other chamber 12 contained a sodium hydroxide solution with a molar concentration of 0.3 mol / L, and its corresponding electrode structure was connected to the positive terminal of power supply 1. A 60V DC power supply 1 was connected, and the current value was recorded and read at regular intervals for 6 hours. Finally, the electrical charge was calculated to obtain an electrical flux value of 809C.

[0041] Comparative Example 1

[0042] Compared with Example 2, this comparative example used the same batch of concrete specimens to be tested. After vacuum saturation with water, the specimens were installed in an existing electrical flux testing device. The copper mesh 3 electrode on one side of the test tank 2 containing a 3.0% sodium chloride solution was connected to the negative terminal of the power supply 1, and the copper mesh 3 electrode on one side of the test tank 2 containing a 0.3 mol / L sodium hydroxide solution was connected to the positive terminal of the power supply 1. A 60V DC power supply 1 was connected, and the current value was recorded and read at regular intervals for 6 hours. Finally, the electrical flux was calculated to be 821C.

[0043] It can be concluded that the test results of Example 2 and Comparative Example 1 differ by only 1.5%, indicating that the concrete electrical flux data obtained using the test device proposed in Example 2 is highly consistent with the prior art.

[0044] The electrode body 10 made of silver-nickel alloy in this application has good conductivity and corrosion resistance, which extends the service life of the electrode structure and reduces the test cost compared with the prior art. Moreover, its hardness is higher than that of the copper material used in the prior art. When used for concrete electric flux test, there is no need to set a pad. While ensuring the accuracy of the test, it simplifies the device and is more suitable as an electrode structure for concrete electric flux test.

[0045] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. The preferred embodiments have been described in detail. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the claims of this application.

Claims

1. An electrode structure for a concrete electrical flux test, characterized by, The electrode body is made of silver-nickel alloy; the electrode body is in sheet structure and is provided with a plurality of holes arranged along a radial path of the sheet structure; the radial path is a plurality of concentric circle paths with equal intervals of radii arranged with the center of the sheet structure as the center; the holes are arranged along the concentric circle paths with equal intervals; the silver-nickel alloy contains 75% of silver and 25% of nickel; and the surface of the electrode body is provided with an oxide film layer structure. The center of the sheet structure is also provided with the holes.

2. The electrode structure for concrete electric flux test according to claim 1, characterized by, The thickness of the electrode body is 1.5 mm±0.1 mm.

3. The electrode structure for concrete electric flux test according to claim 1, characterized by, The electrode body is in circular structure.

4. The electrode structure for concrete electric flux test according to claim 1, characterized by, The electrode structure for the concrete electric flux test comprises at least two electrode structures as claimed in any one of claims 1 to 4.

5. An apparatus for concrete electrical flux testing, characterized in that, Further comprising:

6. The apparatus for concrete electric flux test according to claim 5, characterized by a power supply, a test tank, a resistor and a voltmeter; the positive and negative poles of the power supply are connected with two electrode structures respectively; the two electrode structures are located in the test tank and are arranged on opposite sides of a piece to be detected respectively; the resistor is arranged between the power supply and the electrode; and the voltmeter is connected with the resistor in parallel. The two electrodes and the test tank form a containing cavity for containing a detection reagent respectively.

7. The apparatus for concrete electric flux test according to claim 6, characterized in that, ​

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