Force-holding concrete deterioration test device under water pressure-ion erosion coupling effect

Abstract

The invention relates to the technical field of concrete durability test, and relates to a bearing concrete deterioration test device under water pressure-ion erosion coupling effect, the device comprises a water tank, a stress clamping device, a storage box and a connecting pipe; the stress clamping device is arranged in the water tank and is used for applying stress in different directions to concrete; a corrosion solution is arranged in the storage box; the connecting pipe is arranged between the water tank and the storage tank, and the water tank is communicated with the storage tank through the connecting pipe. The concrete test block is in a coupled state of a water pressure effect, a corrosive ion solution erosion effect and different stress state effects, so that the concrete performance degradation rule under the combined action of the three factors can be more accurately explored, and the device has important research and exploration significance and engineering practical value.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete durability tests, and more specifically, to a deterioration test device for bearing concrete under the coupling action of water pressure and ion erosion. Background Art

[0002] Concrete is one of the most widely used building materials in construction engineering, and its durability is crucial for the safety and service life of structures. The development of concrete durability test technology aims to improve the long-term service performance and reliability of concrete structures under different environmental conditions, providing a scientific basis and technical support for engineering design and construction.

[0003] The influence of various corrosive ions, such as chloride ions, sulfate ions, carbonate ions, etc. on the durability of concrete is a complex process involving multiple chemical and physical factors. In actual situations, the erosion effect of ions on concrete not only exists alone but is also jointly affected by water pressure and the stress state of concrete. Therefore, studying the deterioration of bearing concrete under the coupling action of water pressure and ion erosion has important theoretical and engineering value. Summary of the Invention

[0004] The purpose of the present invention is to provide a deterioration test device for bearing concrete under the coupling action of water pressure and ion erosion to improve the above problems. To achieve the above purpose, the technical solutions adopted by the present invention are as follows:

[0005] The present application provides a deterioration test device for bearing concrete under the coupling action of water pressure and ion erosion. The device includes a water tank, a stress clamping device, a storage tank, and a connecting pipe; the stress clamping device is arranged inside the water tank and is used to apply stresses in different directions to the concrete; a corrosion solution is arranged in the storage tank; the connecting pipe is arranged between the water tank and the storage tank, and the connecting pipe connects the water tank and the storage tank.

[0006] Optionally, a pressure sensor is arranged on the water tank.

[0007] Optionally, a booster pump is arranged on the connecting pipe. The inlet of the booster pump is connected to the outlet of the storage tank, and the outlet of the booster pump is connected to the inlet of the water tank.

[0008] Optionally, the input end of the booster pump is electrically connected to the output end of the controller, and the input end of the controller is electrically connected to the output end of the pressure sensor.

[0009] Optionally, the stress clamping device includes a bending stress clamping device.

[0010] Optionally, the bending stress clamping device includes a first stress adjustment device, a first concrete block, a second concrete block, a steel bar, a first fixing component, a second fixing component, and a first screw. The first stress adjustment device is arranged on the top of the first fixing component. The first concrete block and the second concrete block are arranged between the first fixing component and the second fixing component. The steel bar is arranged between the first concrete block and the second concrete block. The first screw fixedly connects the first stress adjustment device, the first fixing component, and the second fixing component.

[0011] Optionally, the first stress adjustment device includes a first fixing plate, a second fixing plate, a spring, and a first nut. A spring is arranged between the first fixing plate and the second fixing plate. The first screw passes through the center of the spring. The first nut is sleeved on the top of the first screw.

[0012] Optionally, the first fixing component includes a first sub-fixing device and a second sub-fixing device. The first sub-fixing device and the second sub-fixing device are arranged at the same height. The first sub-fixing device and the second sub-fixing device are arranged at intervals in the horizontal direction.

[0013] Optionally, the stress clamping device includes an axial stress clamping device.

[0014] Optionally, the axial stress clamping device includes a second stress adjustment device, a third concrete block, a third fixing plate, and a second screw. The second stress adjustment device is arranged on the top of the third concrete block. The third fixing plate is arranged at the bottom of the third concrete block. The second screw fixedly connects the second stress adjustment device and the third fixing plate.

[0015] The beneficial effects of the present invention are as follows:

[0016] Through the clamping of the stress clamping device and the control of the pressure of the concentrated corrosive solution, the concrete test block is in a state of coupling the action of water pressure, the erosion of corrosive ion solution, and different stress states, so that the law of concrete performance deterioration under the combined action of these three factors can be explored more accurately, which has important research and exploration significance and engineering practical value.

[0017] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will become apparent from the specification, or will be understood by implementing the embodiments of the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written specification, claims, and drawings. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the bearing concrete deterioration test device under the coupling action of water pressure - ion erosion described in the embodiments of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the bending stress clamping device described in the embodiments of the present invention.

[0021] Figure 3 It is a schematic structural diagram of the axial stress clamping device described in the embodiments of the present invention.

[0022] Reference numerals in the figure: 1. Water tank; 2. Storage tank; 3. Connecting pipe; 4. Pressure sensor; 5. Booster pump; 6. Controller; 7. First fixing plate; 8. Second fixing plate; 9. Spring; 10. First nut; 11. First concrete block; 12. Second concrete block; 13. Steel rod; 14. First screw; 15. First sub - fixing device; 16. Second sub - fixing device; 17. Second screw; 18. Third concrete block; 19. Third fixing plate. Specific embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] It should be noted that: Similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present invention, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0025] Such as Figure 1As shown in the figure, this embodiment provides a test device for the deterioration of bearing concrete under the coupling action of water pressure and ion erosion. The device includes: a water tank 1, a stress clamping device, a storage tank 2, and a connecting pipe 3. The stress clamping device is arranged inside the water tank 1 and is used to apply stresses in different directions to the concrete. The storage tank 2 is provided with a corrosion solution. The connecting pipe 3 is arranged between the water tank 1 and the storage tank 2, and the connecting pipe 3 connects the water tank 1 and the storage tank 2. Through the clamping of the stress clamping device and the control of the pressure of the designed concentration corrosion solution in the present invention, the concrete specimen is in a state of coupling of water pressure action, corrosive ion solution erosion action, and different stress state actions, so that the deterioration law of the concrete performance under the combined action of these three factors can be explored more accurately, which has important research and exploration significance and engineering practical value.

[0026] In a specific embodiment of the present disclosure, a pressure sensor 4 is arranged on the water tank 1, and a booster pump 5 is arranged on the connecting pipe 3. The inlet of the booster pump 5 is connected to the outlet of the storage tank 2, and the outlet of the booster pump 5 is connected to the inlet of the water tank 1. The input end of the booster pump 5 is electrically connected to the output end of the controller 6, and the input end of the controller 6 is electrically connected to the output end of the pressure sensor 4. The pressure sensor 4 is used to detect the pressure of the corrosion solution in the storage tank 2, and the booster pump 5 is used to pump the designed concentration corrosion solution in the storage tank 2 into the water tank 1 under the control of the controller 6. When the pressure of the corrosion solution is lower than the designed water pressure, the controller 6 controls the booster pump 5 to start and injects the corrosion solution in the storage tank 2 into the water tank 1 until the pressure of the corrosion solution is equal to the designed water pressure, and then the booster pump 5 is turned off to realize the automatic control of the corrosion solution pressure and continuously inject the corrosion solution into the water tank 1.

[0027] As Figure 2 As shown in the figure, in a specific embodiment of the present disclosure, the stress clamping device includes a bending stress clamping device. The bending stress clamping device includes a first stress adjustment device, a first concrete block 11, a second concrete block 12, a steel bar 13, a first fixing component, a second fixing component, and a first screw rod 14. The first stress adjustment device is arranged on the top of the first fixing component. The first concrete block 11 and the second concrete block 12 are arranged between the first fixing component and the second fixing component. The steel bar 13 is arranged between the first concrete block 11 and the second concrete block 12. The first screw rod 14 fixedly connects the first stress adjustment device, the first fixing component, and the second fixing component. By arranging the steel bar 13 between the first concrete block 11 and the second concrete block 12, bending stress is provided for the first concrete block 11 and the second concrete block 12.

[0028] In a specific embodiment of the present disclosure, the first stress adjustment device includes a first fixing plate 7, a second fixing plate 8, a spring 9, and a first nut 10. A spring 9 is disposed between the first fixing plate 7 and the second fixing plate 8. The first screw 14 passes through the center of the spring 9, and the first nut 10 is sleeved on the top of the first screw 14. By adjusting the position of the first nut 10, the telescopic amount of the spring 9 can be adjusted, thereby controlling the magnitude of the stress.

[0029] In a specific embodiment of the present disclosure, the first fixing assembly includes a first sub-fixing device 15 and a second sub-fixing device 16. The first sub-fixing device 15 and the second sub-fixing device 16 are set at the same height, and the first sub-fixing device 15 and the second sub-fixing device 16 are arranged at intervals in the horizontal direction. The second fixing assembly is arranged in the same manner as the first fixing assembly, so it will not be elaborated here.

[0030] As Figure 3 shown, in a specific embodiment of the present disclosure, the stress clamping device includes an axial stress clamping device. The axial stress clamping device includes a second stress adjustment device, a third concrete block 18, a third fixing plate 19, and a second screw 17. The second stress adjustment device is disposed on the top of the third concrete block 18, the third fixing plate 19 is disposed at the bottom of the third concrete block 18, and the second screw 17 fixedly connects the second stress adjustment device and the third fixing plate 19. The principle of the second stress adjustment device for adjusting the stress is the same as that of the first stress adjustment device. By adjusting the second nut on the second screw 17, the telescopic amount of the spring is adjusted, thereby applying different magnitudes of axial stress to the top of the third concrete block 18.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0034] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present invention, and all should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A bearing concrete deterioration test device under the coupling action of water pressure and ion erosion, characterized in that Comprising: Water tank (1); A stress clamping device disposed inside the water tank (1) for applying stresses to the concrete in different directions; Storage tank (2) with a corrosion solution disposed therein; Connecting pipe (3) disposed between the water tank (1) and the storage tank (2) to connect the water tank (1) and the storage tank (2) in communication.

2. The bearing concrete deterioration test device under the coupling action of water pressure-ion erosion according to claim 1, characterized in that: A pressure sensor (4) is provided on the water tank (1).

3. The deterioration test device for bearing concrete under the coupling action of water pressure-ion erosion according to claim 2, characterized in that: A booster pump (5) is provided on the connecting pipe (3). The inlet of the booster pump (5) is connected to the outlet of the storage tank (2), and the outlet of the booster pump (5) is connected to the inlet of the water tank (1).

4. The bearing concrete deterioration test device under the coupling action of water pressure - ion erosion according to claim 3, characterized in that: The input end of the booster pump (5) is electrically connected to the output end of the controller (6), and the input end of the controller (6) is electrically connected to the output end of the pressure sensor (4).

5. The deterioration test device for bearing concrete under the coupling action of water pressure-ion erosion according to claim 1, characterized in that: The stress clamping device includes a bending stress clamping device.

6. The bearing concrete deterioration test device under the coupling action of water pressure-ion erosion according to claim 5, characterized in that: The bending stress clamping device includes a first stress adjustment device, a first concrete block (11), a second concrete block (12), a steel bar (13), a first fixing component, a second fixing component, and a first screw (14). The first stress adjustment device is disposed on top of the first fixing component. The first concrete block (11) and the second concrete block (12) are disposed between the first fixing component and the second fixing component. The steel bar (13) is disposed between the first concrete block (11) and the second concrete block (12). The first screw (14) fixedly connects the first stress adjustment device, the first fixing component, and the second fixing component.

7. The bearing concrete deterioration test device under the coupling action of water pressure-ion erosion according to claim 6, characterized in that: The first stress adjustment device includes a first fixing plate (7), a second fixing plate (8), a spring (9), and a first nut (10). A spring (9) is disposed between the first fixing plate (7) and the second fixing plate (8). The first screw (14) passes through the center of the spring (9), and the first nut (10) is sleeved on top of the first screw (14).

8. The deterioration test device for bearing concrete under the coupling action of water pressure-ion erosion according to claim 6, characterized in that: The first fixing component includes a first sub-fixing device (15) and a second sub-fixing device (16). The first sub-fixing device (15) and the second sub-fixing device (16) are at the same height and are spaced apart horizontally.

9. The deterioration test device for bearing concrete under the coupling action of water pressure and ion erosion according to claim 1, characterized in that: The stress clamping device includes an axial stress clamping device.

10. The bearing concrete deterioration test device under the coupling action of water pressure - ion erosion according to claim 9, characterized in that: The axial stress clamping device includes a second stress adjustment device, a third concrete block (18), a third fixing plate (19), and a second screw (17). The second stress adjustment device is disposed on top of the third concrete block (18). The third fixing plate (19) is disposed at the bottom of the third concrete block (18). The second screw (17) fixedly connects the second stress adjustment device and the third fixing plate (19).

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