CN221038579U

CN221038579U - Test device for testing chloride ion migration coefficient

Info

Publication number: CN221038579U
Application number: CN202322463487.4U
Authority: CN
Inventors: 罗启灵; 汤高翔; 杨文亚; 刘正祥; 方涛; 龙武剑; 冯甘霖
Original assignee: Shenzhen University; Poly Changda Engineering Co Ltd
Current assignee: Shenzhen University; Poly Changda Engineering Co Ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-05-28
Anticipated expiration: 2033-09-11

Abstract

The application is suitable for the field of building material detection, and provides a test device for testing chloride ion migration coefficient, which comprises a cathode test carrier, a cathode plate and an anode plate, wherein the cathode test carrier is used for containing cathode solution, the cathode test carrier is internally provided with the cathode plate which is electrically connected with the cathode of a power supply, and the anode plate is oppositely arranged with the cathode plate and is electrically connected with the anode of the power supply; the bracket is arranged in the cathode test carrier; the lifting device is arranged in the cathode test carrier and is used for supporting the bracket so as to realize the lifting or descending of the bracket; the sleeve piece is arranged on the bracket, and two opposite ends of the sleeve piece are open and are used for sleeving a concrete test piece; wherein, the negative plate is located between concrete test piece and the support, and the inner wall of sleeve pipe spare encloses with the outer wall of concrete test piece and closes the cavity that forms and hold the positive pole solution, and the positive plate is located in the positive pole solution. According to the test device provided by the application, the liquid level height is adjusted through the lifting device, so that the efficiency of RCM test is improved.

Description

Test device for testing chloride ion migration coefficient

Technical Field

The application belongs to the field of building material detection, and particularly relates to a test device for testing chloride ion migration coefficients.

Background

Concrete is used as a multifunctional civil engineering material and is widely applied to the fields of construction, infrastructure construction, engineering structures and the like. The durability of concrete gradually decreases with the increase of the service time, and chloride ion permeation is a main cause for causing the decrease of the durability of concrete. In order to evaluate the resistance of concrete to penetration of chloride ions, it is necessary to perform a test for resistance to penetration of chloride ions on concrete, and a rapid chloride migration coefficient method (test method for rapid chloride ions migration coefficient, RCM) is one of the methods for resistance to penetration of chloride ions of concrete. When the RCM is used for the anti-chloride ion permeation test of concrete, the liquid level of the cathode solution and the liquid level of the anode solution need to be kept level.

In the related art, a manual titration mode is generally adopted, and the liquid level of the cathode solution and the liquid level of the anode solution are adjusted so that the liquid levels of the cathode solution and the anode solution are level. This way of adjusting the liquid level by manual titration often requires repeated adjustments of the solution amounts of the cathodic and anodic solutions, resulting in lower efficiency of the RCM test.

Disclosure of utility model

The embodiment of the application aims to provide a test device for testing chloride ion migration coefficient, which is used for solving the technical problems that in the prior art, the solution amounts of a cathode solution and an anode solution need to be adjusted repeatedly in a mode of manually titrating and adjusting the liquid level, and the RCM test efficiency is low.

In order to achieve the above purpose, the application adopts the following technical scheme: provided is a test device for testing chloride ion mobility coefficient, comprising:

The cathode test carrier is used for containing a cathode solution, and is internally provided with a cathode plate which is electrically connected with the negative electrode of the power supply and an anode plate which is oppositely arranged with the cathode plate and is electrically connected with the positive electrode of the power supply;

The bracket is arranged in the cathode test carrier;

The lifting device is arranged in the cathode test carrier and is used for supporting the bracket so as to realize the lifting or descending of the bracket;

the sleeve piece is arranged on the bracket, and two opposite ends of the sleeve piece are open and are used for sleeving a concrete test piece;

Wherein, the negative plate is located between concrete test piece and the support, and the inner wall of sleeve pipe spare encloses with the outer wall of concrete test piece and closes the cavity that forms and hold the positive pole solution, and the positive plate is located in the positive pole solution.

According to the test device for testing the migration coefficient of the chloride ions, provided by the embodiment of the application, the cathode solution can be contained through the cathode test carrier, the anode solution is contained through the cavity formed by enclosing the inner wall of the sleeve part and the outer wall of the concrete test piece sleeved in the sleeve part, and the sleeve part and the concrete test piece are supported through the support. When carrying out RCM test to the concrete sample, realize rising or decline of support through elevating gear, can adjust the liquid level of the positive pole solution in the cavity, realize the liquid level of positive pole solution and the liquid level parallel and level of negative pole solution, the condition that need repeatedly adjust solution volume when can avoiding artifical titration to adjust liquid level, help improving the efficiency of RCM test.

In some embodiments, the lifting device comprises a fixing portion, a lifting portion opposite to the fixing portion, and a supporting portion with two ends respectively connected to the fixing portion and the lifting portion, and the bracket is disposed on the lifting portion.

Through adopting above-mentioned technical scheme, elevating gear guarantees holistic stability through fixed part, drives the support on elevating part and the elevating part through supporting part and rises or descend, helps realizing the accurate control of support height.

In some embodiments, the support includes a telescoping cylinder.

Through adopting above-mentioned technical scheme, flexible control of lifting height can be realized to flexible cylinder, and flexible cylinder's reaction rate is fast, helps further improving experimental efficiency.

In some embodiments, the supporting portion includes a bearing and a rotating shaft having one end connected with an inner ring of the bearing and the other end screwed with the fixing portion, and the lifting portion has a cavity for accommodating the bearing and is fixedly connected with an outer ring of the bearing.

Through adopting above-mentioned technical scheme, with the inner circle of bearing be connected and with fixed part threaded connection's pivot rotation, can drive the lifting unit who is connected with the outer lane of bearing and rise or descend to realize rising or descending of the support on the lifting unit.

In some embodiments, the test device further comprises a hoop sleeved on the outer wall of the sleeve member and used for realizing sealing connection between the outer wall of the concrete test piece and the inner wall of the sleeve member.

Through adopting above-mentioned technical scheme, the outer wall of sleeve spare is located to the hoop cover, can realize that the outer wall of concrete test piece and the inner wall of sleeve spare are sealing connection mutually, prevent that the negative pole solution from flowing into the positive pole solution, perhaps the positive pole solution flows into the negative pole solution.

In some embodiments, the number of hoops includes at least two, and the concrete sample has oppositely disposed first and second ends, with one hoop being flush with the first end and the other hoop being flush with the second end.

Through adopting above-mentioned technical scheme, set up the hoop in the position looks parallel and level with the both ends of concrete test piece, can effectively prevent that cathode solution and anode solution from mixing.

In some embodiments, the bracket includes a main body portion and an extension portion disposed on the main body portion, the extension portion being for abutting against a concrete specimen, the cathode plate being disposed between the main body portion and the concrete specimen.

Through adopting above-mentioned technical scheme, locate the extension on the main part of support and support the concrete test piece, provide the supporting role for the concrete test piece.

In some embodiments, the main body portion has a first inclined surface and a second inclined surface disposed at an angle to the first inclined surface, the protruding portion is disposed on the first inclined surface, and the sleeve member abuts against the second inclined surface.

Through adopting above-mentioned technical scheme, the first inclined plane and the extension of main part are when supporting sleeve spare and concrete test piece, can make sleeve spare and concrete test piece present incline condition, reach test condition and can provide stable support for sleeve spare and concrete test piece simultaneously.

In some embodiments, the test device further comprises a suction cup, the sleeve member being connected to the second inclined surface by the suction cup.

Through adopting above-mentioned technical scheme, the sleeve member adsorbs on the second inclined plane through the sucking disc, can realize the firm connection between sleeve member and the support to improve the holistic stability of test device.

In some embodiments, the main body portion includes a base, a support plate with one end hinged to the base, and a support rod with one end hinged to the support plate and the other end abutting against the base, and a plurality of clamping groove structures for limiting the support rod are arranged on the base, and the support plate has a first inclined surface.

Through adopting above-mentioned technical scheme, the bracing piece card can adjust the contained angle between second inclined plane and the base in different draw-in groove structures, can realize adjusting the contained angle to experimental requirement within range. In addition, after the test is finished, the inclination angle of the sleeve piece can be adjusted by adjusting the included angle between the first inclined surface and the base, so that the sleeve piece is horizontal, and the sleeve piece is convenient to take out.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of an apparatus for testing chloride ion mobility according to an embodiment of the present application;

Fig. 2 is a cross-sectional view of a lifting device of a test apparatus for testing a chloride ion mobility coefficient according to an embodiment of the present application.

Wherein, each reference sign in the figure:

100. a test device; 10. a cathode test carrier; 11. a cathode solution; 12 anode plates; 13, a cathode plate; 14. an anode solution; 20. a bracket; 21. a main body portion; 211. a base; 212. a support plate; 2121. a first inclined surface; 2122. a second inclined surface; 213. a support rod; 22. an extension; 30. a lifting device; 31. a fixing part; 32. a lifting part; 33. a support part; 34. a rotating shaft; 35. a bearing; 40. a sleeve member; 41. a cavity; 50. a concrete test piece; 51. a first end; 52. a second end; 60. a power supply; 70. and (5) hooping.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, an embodiment of the present application provides an RCM test apparatus 100, which includes a cathode test carrier 10, a support 20, a lifting device 30, a sleeve member 40, a concrete test piece 50, a power source 60, an anode plate 12 and a cathode plate 13.

One end of the cathode test carrier 10 is in an opening shape, the cathode test carrier 10 can be realized as a tank body or a tank body with an opening, the cathode solution 11 required by the RCM is contained in the cathode test carrier 10, and the cathode plate 13 is electrically connected with the cathode of the power supply 60 and is arranged in the cathode solution 11. Specifically, the cathode plate 13 is provided between the concrete test piece 50 and the bracket 20.

A support 20 is provided within the cathode test carrier 10 for supporting the sleeve member 40. The bracket 20 is typically made of a material that is non-conductive and has some strength, such as plastic, rubber, ceramic, etc.

The lifting device 30 is arranged in the cathode test carrier 10 and is used for supporting the support 20, when the lifting device 30 ascends, the support 20 is driven to ascend, and when the lifting device 30 descends, the support 20 is driven to descend.

The sleeve member 40 is open at opposite ends for sleeving the concrete test piece 50, and the sleeve member 40 is generally made of a material having a certain elasticity, such as rubber, silicone rubber, polyurethane, etc. When the concrete test piece 50 is sleeved on the sleeve piece 40, the sleeve piece 40 deforms, so that the inner wall is tightly attached to the outer wall of the concrete test piece 50, and the anode solution and the cathode solution are prevented from being mixed in the test process. The inner wall of the sleeve member 40 encloses with the outer wall of the concrete sample 50 to form a cavity 41 for holding the anode solution 14, and the anode plate 12 is electrically connected with the positive electrode of the power supply 60 and is disposed in the anode solution 14. The sleeve member 40 is disposed on the support 20, the support 20 supports the sleeve member 40, and when the lifting device 30 drives the support 20 to lift or descend, the sleeve member 40 supported by the support 20 also lifts or descends along with the support 20 and the lifting device 30.

When the cathode test device is used, firstly, the concrete test piece 50 meeting test requirements is placed at the bottom of the sleeve piece 40, the sleeve piece 40 with the concrete test piece 50 is placed on the support 20 in the cathode test carrier 10, the sleeve piece 40 is obliquely placed in the cathode test carrier 10, the anode plate 12 is connected with the positive electrode lead of the power supply 60 and is installed in the cavity 41, and the cathode plate 13 is connected with the negative electrode lead of the power supply 60 and is installed between the concrete test piece 50 and the support 20. Then, the anode solution 14 is injected into the cavity 41, the surfaces of the anode plate 12 and the concrete test piece 50 are immersed, the cathode solution 11 is injected into the cathode test carrier 10, the liquid level of the anode solution 14 is adjusted by lifting or lowering the lifting device 30, and the liquid level of the anode solution 14 is adjusted to be level with the liquid level of the cathode solution 11. Thereafter, the power supply 60 is turned on to energize the anode plate 12 and the cathode plate 13, and the RCM test of the concrete test piece is started.

The test device 100 provided by the embodiment of the application can hold the cathode solution 11 through the cathode test carrier 10, hold the anode solution 14 through the cavity 41 formed by enclosing the inner wall of the sleeve member 40 and the outer wall of the concrete test piece 50 sleeved in the sleeve member, and support the sleeve member 40 and the concrete test piece 50 through the bracket 20. When the RCM test is carried out on the concrete test piece 50, the lifting device 30 is used for lifting or descending the support 20, the liquid level of the anode solution 14 between the sleeve piece 40 supported by the support 20 and the concrete test piece 50 can be adjusted, the liquid level of the anode solution 14 is flush with the liquid level of the cathode solution 11, the condition that the solution amount needs to be repeatedly adjusted when the liquid level is adjusted by manual titration can be avoided, and the RCM test efficiency is improved.

In some embodiments, before the cathode solution 11 is injected into the cathode test carrier 10, the lifting device 30 may be lifted to the highest position, and then the cathode solution 11 is injected into the cathode test carrier 10, so that the cathode solution 11 is prevented from splashing into the anode solution 14 to pollute the concrete test piece 50 when the cathode solution 11 is injected.

In some embodiments, the lifting device 30 includes a fixing portion 31, a lifting portion 32 disposed opposite to the fixing portion 31, and a supporting portion 33 having both ends connected to the fixing portion 31 and the lifting portion 32, respectively, and the bracket 20 is disposed on the lifting portion 32.

The fixing portion 31 is a relatively stationary structure in the lifting device 30, and for example, the fixing portion 31 may be a base structure such as a pedestal or a base, which is used to support the lifting portion 32 and the supporting portion 33. Specifically, in order to improve stability of the elevating device 30 and reduce shaking of the elevating device 30 during elevating, the fixing portion 31 is fixedly connected to the inside of the bottom of the cathode test carrier 10.

The lifting portion 32 is disposed opposite to the fixing portion 31, and is a structure that is movably lifted in the lifting device, for example, the lifting portion 32 may be a lifting structure such as a lifting platform, a lifting workbench, etc., and the lifting portion 32 is connected to the support 20, so as to drive the support 20 to lift relative to the fixing portion 31. Specifically, the lifting part 32 is fixedly connected with the support 20, so that stability between the lifting part 32 and the support 20 is improved, the lifting part 32 is prevented from moving relative to the support 20, stability of the anode solution is ensured, and shaking of the anode solution in the lifting process is reduced.

The supporting portion 33 is configured to support the lifting portion 32 in the lifting device 30, and one end of the supporting portion 33 is connected to the fixing portion 31, and the other end is connected to the lifting portion 32, so that lifting movement is achieved by the supporting portion 33.

Illustratively, the support 33 may include a telescopic hydraulic cylinder that enables the lifting motion by controlling the flow of hydraulic oil. The support 33 may also comprise an electric lifter, the lifting movement being achieved by controlling the rotation of the electric lifter.

So set up, elevating gear 30 guarantees holistic stability through fixed part 31, drives the support 20 on elevating part 32 and elevating part 32 through supporting part 33 and rises or descend, helps realizing the accurate control of support 20 height.

In one particular embodiment, the support 33 includes a telescoping cylinder.

Specifically, the rear end cover of the telescopic cylinder is fixedly connected to the top surface of the fixing portion 31, the piston rod of the telescopic cylinder is fixedly connected to the bottom surface of the lifting portion 32, and lifting movement of the supporting portion 33 is achieved by controlling the telescopic cylinder to stretch.

The telescopic cylinder provided by the embodiment of the application can realize flexible control of the lifting height, has high response speed, and is beneficial to further improving the test efficiency.

As shown in fig. 2, in some embodiments, the lifting device 30 further includes a rotating shaft 34 and a bearing 35, the bearing 35 is disposed on one end of the rotating shaft 34, the lifting portion 32 is provided with a mounting hole for accommodating the bearing 35, and the other end of the rotating shaft 34 is screwed to the fixing portion 31.

Specifically, the inner ring of the bearing 35 is fixedly disposed at one end of the rotating shaft 34 in a penetrating manner, the outer ring of the bearing 35 is fixedly connected in the mounting hole of the lifting portion 32, the other end of the rotating shaft 34 is provided with threads, and the fixing portion 31 is provided with a threaded hole matched with the threads of the rotating shaft 34.

When in use, the rotating shaft 34 is rotated, one end of the rotating shaft 34 with threads ascends or descends along the threaded hole of the fixing part 31, the other end of the rotating shaft 34 drives the inner ring of the bearing 35 to rotate, and meanwhile, the outer ring of the bearing 35 is driven to ascend or descend, so that the lifting part 32 fixedly connected with the outer ring of the bearing 35 is driven to ascend or descend.

In this way, the bearing 35 is driven to rise or fall by rotating the rotating shaft 34, and the lifting portion 32 connected to the bearing 35 is thereby raised or lowered.

As shown in FIG. 1, in some embodiments, the test device 100 further comprises a collar 70, wherein the collar 70 is sleeved on the outer wall of the sleeve member 40, and is used for realizing the sealing connection between the outer wall of the concrete test piece 50 and the inner wall of the sleeve member 40.

When the concrete test piece 50 is installed in the sleeve member 40, a gap may exist between the inner wall of the sleeve member 40 and the outer wall of the concrete test piece 50, and in order to avoid mixing of the anolyte solution 14 and the catholyte solution 11, a hoop 70 may be provided on the outer wall of the sleeve member 40, so that the outer wall of the concrete test piece 50 is in sealing connection with the inner wall of the sleeve member 40 by fastening the hoop 70. The number of hoops 70 may be one or plural, and when the number of hoops 70 is plural, the hoops 70 may be uniformly disposed on the outer wall of the sleeve member 40.

The outer wall of the concrete sample 50 is connected with the inner wall of the sleeve member 40 in a sealing manner by the hoop 70 sleeved on the outer wall of the sleeve member 40, so that the cathode solution 11 is prevented from flowing into the anode solution 14 or the anode solution 14 flows into the cathode solution 11.

In some embodiments, the number of hoops 70 includes at least two, and the concrete test piece 50 has oppositely disposed first and second ends 51, 52, with one hoop being flush with the first end 51 and the other hoop being flush with the second end 52.

It will be appreciated that the first end 51 is the end face of the concrete test piece 50 that is in contact with the anolyte solution 14 and the second end 52 is the end face of the concrete test piece 50 that is in contact with the catholyte solution 11.

Specifically, during installation, one ferrule is first installed flush with first end 51, the other ferrule is installed flush with second end 52, and then the bolts on the ferrules are tightened so that the ferrules are snugly against the outside of sleeve member 40.

So arranged, the hoop 70 is arranged at a position flush with both ends of the concrete sample 50, so that the cathode solution 11 and the anode solution 14 can be effectively prevented from being mixed.

In some embodiments, the bracket 20 includes a main body 21 and an extension 22 provided on the main body 21, the extension 22 being for abutting against the concrete piece 50, the cathode plate 13 being provided between the main body 21 and the concrete piece 50. There may be a plurality of the protrusions 22, and the concrete test piece 50 uniformly abuts on the plurality of the protrusions 22.

As will be appreciated, the body 21 is intended to be connected to the lifting device 30 and is the body of the stand 20, and the extension 22 extends outside the body 21 for supporting the concrete sample 50 against it. Specifically, the protruding portion 22 may be a support bar or a support column by which the concrete sample 50 is supported so that the catholyte solution 11 can flow into the end of the concrete sample 50.

In some embodiments, the main body 21 has a first inclined surface 2121 and a second inclined surface 2122 disposed at an angle to the first inclined surface 2121, and the protruding portion 22 is disposed on the first inclined surface 2121, and the sleeve member 40 abuts against the second inclined surface 2122.

The first inclined surface 2121 is a surface on the main body 21 for the protruding portion 22 to be disposed, where the surface forms an angle with a horizontal plane, and an angle between the second inclined surface 2122 and the first inclined surface 2121 may be 60 °, 75 °, 90 °, 120 °, etc., for the sleeve member 40 to abut against.

Specifically, the first inclined surface 2121 forms an angle with the horizontal plane within a range of 20 ° to 32 °, and the second inclined surface 2122 forms an angle with the first inclined surface 2121 of 90 °, so that the sleeve member 40 is in an inclined state to meet the RCM test requirement.

By adopting the solution provided in this embodiment, when the sleeve member 40 and the concrete test piece 50 are supported by the first inclined surface 2121 of the main body portion 21 and the extension portion 22, the sleeve member 40 and the concrete test piece 50 can be in an inclined state, so that the test condition is reached, and meanwhile, stable support can be provided for the sleeve member 40 and the concrete test piece 50.

In some embodiments, the test device further comprises a suction cup by which the cannula member 40 is attached to the second inclined surface 2122. Specifically, during installation, one end of the suction cup may be first attached to the outer wall of the sleeve member 40, and then the sleeve member 40 with the suction cup attached thereto is abutted against the second inclined surface 2122, so that the other end of the suction cup is attached to the second inclined surface 2122. Or one end of the suction cup is first sucked on the second inclined surface 2122 and then the sleeve member 40 is abutted against the other end of the suction cup.

According to the sucker provided by the embodiment of the application, the sleeve piece 40 is adsorbed on the second inclined surface 2122, so that the sleeve piece 40 and the bracket 20 can be firmly connected, and the overall stability of the test device is improved.

In some embodiments, the main body 21 includes a base 211, a support plate 212 with one end hinged to the base 211, and a support rod 213 with one end hinged to the support plate 212 and the other end abutting against the base 211, wherein the base 211 is provided with a plurality of clamping groove structures for limiting the support rod 213, and the support plate 212 has a first inclined surface.

The base 211 may be hinged with the support plate 212 by a hinge, and the support plate 212 may be hinged with the support bar 213 by a hinge. The base 211 is provided with a plurality of clamping groove structures for limiting the supporting rods 213, and when the supporting rods 213 are clamped into different clamping groove structures, the included angles between the first inclined surfaces 2121 and the base 211 are different. In practical application, the supporting rod 213 can be clamped into different clamping groove structures, so as to realize that the included angle between the first inclined surface 2121 and the base 211 meets the practical use requirement.

So set up, bracing piece 213 card can adjust the contained angle between second inclined plane 2122 and the base 211 in different draw-in groove structures, can realize adjusting the contained angle to experimental requirement within range. In addition, after the test is finished, the inclination angle of the sleeve member 40 can be adjusted by adjusting the included angle between the first inclined surface 2121 and the base 211, so that the sleeve member 40 is horizontal, and the sleeve member 40 is convenient to take out.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A test device for testing chloride ion migration coefficient is characterized in that: the test device comprises:

the cathode test carrier is used for containing a cathode solution, and is internally provided with a cathode plate which is electrically connected with the negative electrode of the power supply and an anode plate which is arranged opposite to the cathode plate and is electrically connected with the positive electrode of the power supply;

A support disposed within the cathode test carrier;

The lifting device is arranged in the cathode test carrier and used for supporting the bracket so as to realize the lifting or descending of the bracket;

The two opposite ends of the sleeve piece are open and are used for sleeving a concrete test piece, and the sleeve piece is arranged on the bracket;

The cathode plate is arranged between the concrete test piece and the support, the inner wall of the sleeve piece and the outer wall of the concrete test piece enclose to form a cavity for containing anode solution, and the anode plate is arranged in the anode solution.

2. The apparatus according to claim 1, wherein the lifting device comprises a fixing portion, a lifting portion disposed opposite to the fixing portion, and a supporting portion having both ends connected to the fixing portion and the lifting portion, respectively, and the bracket is disposed on the lifting portion.

3. The test device for testing the migration coefficient of chloride ions according to claim 2, wherein the supporting portion comprises a telescopic cylinder.

4. The device for testing the migration coefficient of chloride ions according to claim 2, wherein the lifting device further comprises a rotating shaft and a bearing penetrating one end of the rotating shaft, the lifting portion is provided with a mounting hole for accommodating the bearing, and the other end of the rotating shaft is connected to the fixing portion in a threaded manner.

5. The test device for testing the migration coefficient of chloride ions according to claim 1, further comprising a hoop sleeved on the outer wall of the sleeve member and used for realizing the sealing connection between the outer wall of the concrete test piece and the inner wall of the sleeve member.

6. The apparatus of claim 5, wherein the number of hoops includes at least two, the concrete test piece having oppositely disposed first and second ends, one of the hoops being flush with the first end and the other hoop being flush with the second end.

7. The test device for testing the chloride ion mobility coefficient according to claim 1, wherein the bracket comprises a main body portion and an extension portion arranged on the main body portion, the extension portion is used for abutting against the concrete test piece, and the cathode plate is arranged between the main body portion and the concrete test piece.

8. The apparatus according to claim 7, wherein the main body has a first inclined surface and a second inclined surface disposed at an angle to the first inclined surface, the protruding portion is disposed on the first inclined surface, and the sleeve member abuts against the second inclined surface.

9. The apparatus according to claim 8, further comprising a suction cup, wherein the sleeve member is connected to the second inclined surface via the suction cup.

10. The apparatus according to claim 8, wherein the main body comprises a base, a support plate with one end hinged to the base, and a support rod with one end hinged to the support plate and the other end abutting against the base, and the base is provided with a plurality of clamping groove structures for limiting the support rod, and the support plate has the first inclined surface.