Dam concrete permeation corrosion device and testing method

Abstract

The invention provides a dam concrete permeation corrosion device and a testing method, relates to the technical field of concrete, and aims to improve the measurement accuracy of the dam concrete permeation corrosion device. Comprising a control terminal, an osmotic pressure volume controller, a back pressure volume controller, an osmotic pressure pollutant separator, a back pressure pollutant separator, a corrosion chamber and a constant-temperature water tank. And the osmotic pressure volume controller is electrically connected with the control terminal. And the back pressure volume controller is electrically connected with the control terminal. The osmotic pressure pollutant isolation piece is communicated with the osmotic pressure volume controller and is used for isolating the erosion solution. A back pressure contaminant isolator is in communication with the back pressure volume controller and is configured to isolate the erosion solution. The corrosion chamber is communicated with the osmotic pressure pollutant separator and the back pressure pollutant separator, a water permeable plate is arranged in the corrosion chamber, the water permeable plate is provided with a plurality of water permeable holes, and the water permeable plate is used for fixing a test piece. The constant-temperature water tank is provided with a containing space, the corrosion chamber is located in the containing space, and the constant-temperature water tank is used for providing a constant-temperature corrosion environment for the corrosion chamber.

Description

Technical Field

[0001] The present application relates to the field of concrete technology, and in particular to a dam concrete penetration and corrosion device and a testing method. Background Art

[0002] In the related art, when testing dam concrete, a high-pressure gas tank or air compressor is used to provide osmotic pressure, and a measuring cylinder is used to collect the liquid at the outlet. However, the solution is easy to evaporate, and thus the evolution of the permeability coefficient of the material during the dissolution process cannot be accurately measured. Summary of the invention

[0003] In order to solve the above technical problems, the present application provides a dam concrete penetration and dissolution device and a testing method, which are used to improve the measurement accuracy of the dam concrete penetration and dissolution device.

[0004] In the first aspect, an embodiment of the present application provides a dam concrete osmotic dissolution device, which includes: a control terminal, an osmotic pressure volume controller, a back pressure volume controller, an osmotic pressure pollutant isolation member, a back pressure pollutant isolation member, a dissolution chamber and a constant temperature water tank. The osmotic pressure volume controller is electrically connected to the control terminal. The back pressure volume controller is electrically connected to the control terminal. The osmotic pressure pollutant isolation member is connected to the osmotic pressure volume controller and is used to isolate the erosion solution. The back pressure pollutant isolation member is connected to the back pressure volume controller and is used to isolate the erosion solution. The dissolution chamber is connected to both the osmotic pressure pollutant isolation member and the back pressure pollutant isolation member, and a permeable plate is provided in the dissolution chamber, the permeable plate has multiple permeable holes, and the permeable plate is used to fix the test piece. The constant temperature water tank has a containing space, and the dissolution chamber is located in the containing space, and the constant temperature water tank is used to provide a constant temperature dissolution environment for the dissolution chamber.

[0005] According to the dam concrete osmotic dissolution device of the embodiment of the present application, by setting an osmotic pressure volume controller and a back pressure volume controller, high-precision osmotic pressure and back pressure can be provided, and the amount of water seepage during the dissolution process can be directly read out by the change of the back pressure volume controller, so as to calculate the change of the permeability coefficient of the specimen during the dissolution process. In addition, by setting an osmotic pressure contaminant isolation member and a back pressure contaminant isolation member, the corrosive solution can be isolated from the osmotic pressure volume controller and the back pressure volume controller, so that the osmotic pressure volume controller and the back pressure volume controller can be prevented from being damaged by the acidic corrosive solution, which is conducive to improving the reusability of the dam concrete osmotic dissolution device.

[0006] In one possible implementation, the dissolution chamber includes an osmotic pressure chamber and a back pressure chamber, the osmotic pressure chamber is connected to an osmotic pressure controller, the back pressure chamber is connected to the back pressure controller, the back pressure chamber is located in the osmotic pressure chamber and is detachably connected to the osmotic pressure chamber.

[0007] In one possible implementation, the osmotic pressure chamber has an osmotic pressure observation window, the back-pressure chamber has a back-pressure observation window, and the osmotic pressure observation window is directly opposite to the back-pressure observation window.

[0008] In a possible implementation, the dam concrete penetration and corrosion device further includes a sealing rubber mold, and the test piece is bonded to the permeable plate via the sealing rubber mold.

[0009] In one possible implementation, the dam concrete penetration and dissolution device also includes a support rod and a fastener, wherein the support rod is rotatably connected to the permeable plate, one end of the fastener is connected to the support rod, and the other end abuts against the specimen to fix the specimen on the permeable plate.

[0010] In a possible implementation, the dam concrete seepage and dissolution device further includes a first clamping member and a second clamping member that match each other, wherein the first clamping member is connected to the back pressure chamber, and the second clamping member is connected to the seepage pressure chamber.

[0011] In a possible implementation, the dam concrete penetration dissolution device also includes a bracket, one end of which is connected to the dissolution chamber, and the other end of which is connected to the constant temperature water tank.

[0012] In one possible implementation, the constant temperature water tank includes a heater, an insulating inner wall, insulating foam and an insulating outer wall, the insulating inner wall, insulating foam and insulating outer wall are stacked in sequence, and the heater is electrically connected to the control terminal.

[0013] In one possible implementation, the osmotic contaminant isolation element has a first accommodating chamber, in which a first diaphragm is disposed. The first diaphragm is used to separate the first accommodating chamber into an osmotic chamber and a first isolation chamber. The osmotic chamber is connected to the osmotic volume controller, and the first isolation chamber is connected to the dissolution chamber.

[0014] In the second aspect, an embodiment of the present application provides a testing method, which is applied to the above-mentioned dam concrete infiltration and dissolution device, and the testing method includes the following steps: cutting the test piece into sheets; fixing the sheet-shaped test piece on a permeable plate; filling the osmotic pressure volume controller with a first volume of deionized water, and filling the back pressure volume controller with a second volume of deionized water; filling the osmotic pressure pollutant isolation element and the back pressure pollutant isolation element with liquid; injecting liquid into the dissolution chamber; placing the dissolution chamber in a constant temperature water tank, and the control terminal applies osmotic pressure and back pressure through the osmotic pressure volume controller and the back pressure volume controller.

[0015] Among them, the technical effects brought about by any design method in the second aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 Schematic diagram of an antifreeze floating device provided in some embodiments of the present application connected to a reservoir.

[0019] Reference numerals:

[0020] 100. Dam concrete penetration and corrosion device; 200. Test specimen;

[0021] 1. Control terminal;

[0022] 2. Osmotic pressure volume controller;

[0023] 3. Back pressure volume controller;

[0024] 4. Osmotic contaminant isolation element; 41. First diaphragm; 42. Osmotic cavity; 421. Osmotic liquid inlet valve; 422. Osmotic liquid inlet exhaust valve; 43. First isolation cavity; 431. Osmotic liquid outlet valve; 432. Osmotic liquid outlet exhaust valve;

[0025] 5. Back-pressure pollutant isolation element; 51. Second diaphragm; 52. Back-pressure chamber; 521. Back-pressure liquid inlet valve; 522. Back-pressure liquid inlet exhaust valve; 53. Second isolation chamber; 531. Back-pressure liquid outlet valve; 532. Back-pressure liquid outlet exhaust valve;

[0026] 6. Dissolution chamber; 61. Osmotic pressure chamber; 611. Osmotic pressure observation window; 612. Osmotic pressure exhaust valve; 613. Osmotic pressure valve; 62. Back-pressure chamber; 621. Back-pressure observation window; 622. Back-pressure exhaust valve; 623. Back-pressure valve; 63. Sealing rubber mold; 64. Support rod; 65. Fastener; 66. First clamping piece; 67. Second clamping piece; 68. Buckle knob;

[0027] 7. Constant temperature water tank; 71. Heater; 72. Insulated inner wall; 73. Insulated foam; 74. Insulated outer wall; 75. Bracket;

[0028] 8. Permeable board. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present invention.

[0031] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only references to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, 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 cannot be understood as a limitation on the embodiments of the present application.

[0032] In the description of the embodiments of the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0033] See also Figure 1 , Figure 1 Schematic diagram of a dam concrete osmotic dissolution device provided in some embodiments of the present application. The dam concrete osmotic dissolution device 100 comprises a control terminal 1, an osmotic pressure volume controller 2, a back pressure volume controller 3, an osmotic pressure pollutant isolation element 4, a back pressure pollutant isolation element 5, a dissolution chamber 6 and a constant temperature water tank 7.

[0034] The control terminal 1 is the control center of the dam concrete seepage and corrosion device 100. The control terminal 1 can be a computer.

[0035] The osmotic pressure volume controller 2 is electrically connected to the control terminal 1. Specifically, the control terminal 1 can be connected to the osmotic pressure volume controller 2 via an osmotic pressure transmission cable. The control terminal 1 can control the size of the osmotic pressure through the osmotic pressure volume controller 2, and the opening or closing of the osmotic pressure volume controller 2.

[0036] The back pressure volume controller 3 is electrically connected to the control terminal 1. Specifically, the control terminal 1 can be connected to the back pressure volume controller 3 via a back pressure transmission cable. The control terminal 1 can control the size of the back pressure and the opening or closing of the back pressure volume controller 3 through the back pressure volume controller 3.

[0037] It should be noted that the osmotic pressure volume controller 2 and the back pressure volume controller 3 can be used to provide osmotic pressure and back pressure, and can record the volume values ​​of infiltration and exfiltration.

[0038] The osmotic contaminant isolation element 4 is in communication with the osmotic volume controller 2 and is used to isolate the corrosive solution, thereby preventing the solution from corroding the osmotic volume controller 2 .

[0039] The back-pressure contaminant isolation element 5 is in communication with the back-pressure volume controller 3 and is used to isolate the corrosive solution, thereby preventing the solution from corroding the back-pressure volume controller 3 .

[0040] The dissolution chamber 6 is a component for the specimen 200 to undergo a dissolution reaction, and the dissolution chamber 6 can be filled with an ammonium nitrate solution, an ammonium chloride solution, etc. The dissolution chamber 6 is connected to both the osmotic contaminant isolation member 4 and the back-pressure contaminant isolation member 5. Specifically, the dissolution chamber 6 is connected to the osmotic volume controller 2 through the osmotic contaminant isolation member 4, and is connected to the back-pressure volume controller 3 through the back-pressure contaminant isolation member 5.

[0041] A water permeable plate 8 may be provided in the dissolution chamber 6. The water permeable plate 8 may have a plurality of water permeable holes, so that the solution in the dissolution chamber 6 may flow from one side of the water permeable plate 8 to the other side through the water permeable holes.

[0042] The water-permeable plate 8 and the corrosion chamber 6 can be connected by fastener connection, welding, etc.

[0043] The water-permeable plate 8 can be used to fix the test piece 200, so that the solution in the dissolution chamber 6 can react with the test piece 200 through the water-permeable holes. The test piece 200 and the water-permeable plate 8 can be connected to the water-permeable plate 8 by means of adhesive, clamping, fastener 65 connection, etc.

[0044] The constant temperature water tank 7 may have a containing space. The dissolution chamber 6 is located in the containing space, and the constant temperature water tank 7 is used to provide a constant temperature dissolution environment for the dissolution chamber 6. The containing space may be filled with water, and the water may be heated to maintain a constant water temperature in the containing space, thereby ensuring the reliability of the dam concrete penetration dissolution device 100.

[0045] When it is necessary to calculate the evolution of the permeability coefficient of the specimen 200 during the dissolution process, Darcy's law can be used: Q = KIA;

[0046] Wherein, Q is the volume of the erosion solution that permeates the specimen 200, which can be measured by the osmotic pressure volume controller 2 and the back pressure volume controller 3. K is the permeability coefficient of the specimen 200. I is the hydraulic gradient, which can be obtained by subtracting the back pressure from the osmotic pressure and dividing it by the thickness of the specimen 200. A is the flow cross-sectional area, which is the cross-sectional area of ​​the specimen 200. After Q, I, and A are determined, the value of the permeability coefficient K of the specimen 200 can be calculated according to the calculation formula, so that the evolution of the permeability coefficient of the specimen 200 during the dissolution process can be calculated.

[0047] According to the dam concrete osmotic dissolution device 100 of the embodiment of the present application, by setting the osmotic pressure volume controller 2 and the back pressure volume controller 3, high-precision osmotic pressure and back pressure can be provided, and the amount of water seepage during the dissolution process can be directly read out by the change of the back pressure volume controller 3, so as to calculate the change of the permeability coefficient of the specimen 200 during the dissolution process. In addition, by setting the osmotic pressure contaminant isolation member 4 and the back pressure contaminant isolation member 5, the erosion solution can be isolated from the osmotic pressure volume controller 2 and the back pressure volume controller 3, so as to avoid the osmotic pressure volume controller 2 and the back pressure volume controller 3 being damaged by the acidic erosion solution, which is conducive to improving the reusability of the dam concrete osmotic dissolution device 100.

[0048] Please continue reading Figure 1 In some embodiments, the dissolution chamber 6 may include an osmotic pressure chamber 61 and a back pressure chamber 62. The osmotic pressure chamber 61 is connected to the osmotic pressure volume controller 2, and the back pressure chamber 62 is connected to the back pressure volume controller 3. The back pressure chamber 62 is located in the osmotic pressure chamber 61 and is detachably connected to the osmotic pressure chamber 61. The osmotic pressure chamber 61 is filled with a solution, and the back pressure chamber 62 is also filled with a solution. This arrangement facilitates replacement and maintenance of the osmotic pressure chamber 61 and the back pressure chamber 62, thereby facilitating the improvement of the maintainability of the dam concrete osmotic dissolution device 100.

[0049] Please continue reading Figure 1In some embodiments, the osmotic pressure chamber 61 has an osmotic pressure observation window 611, and the back pressure chamber 62 may have a back pressure observation window 621, and the osmotic pressure observation window 611 is directly opposite to the back pressure observation window 621. Therefore, it is convenient to observe the state of the test piece 200 through the osmotic pressure observation window 611 and the back pressure observation window 621 during the test.

[0050] Exemplarily, the osmotic pressure observation window 611 can be located on two opposite sides of the osmotic pressure chamber 61 in the height direction, and the back pressure observation window 621 can be located on two opposite sides of the back pressure chamber 62 in the height direction. This arrangement can prevent the constant temperature water tank 7 from blocking the osmotic pressure observation window 611 and the back pressure observation window 621.

[0051] Please continue reading Figure 1 In some embodiments, the dam concrete penetration and corrosion device 100 may further include a sealing rubber mold 63. The test piece 200 is bonded to the water-permeable plate 8 through the sealing rubber mold 63. This arrangement facilitates the fixing of the test piece 200, thereby facilitating the improvement of assembly efficiency.

[0052] Please continue reading Figure 1 In some embodiments, the dam concrete penetration and corrosion device 100 may further include a support rod 64 and a fastener 65. The support member may be rotatably connected to the permeable plate 8. One end of the fastener 65 may be connected to the support rod 64, and the other end may abut against the specimen 200, so as to fix the specimen 200 on the permeable plate 8. Specifically, the orthographic projection of the fastener 65 on the plane where the specimen 200 is located is located inside the specimen 200, and the fastener 65 may move on the support rod 64 in a direction close to or away from the specimen 200, so that when moving in a direction close to the specimen 200, the specimen 200 may be pressed against the permeable plate 8. Therefore, the fastening position of the fastener 65 may be adjusted by rotating the support rod 64, which is conducive to improving the versatility of the dam concrete penetration and corrosion device 100. In addition, the test piece 200 is fixed by the fastener 65, which can prevent the reverse seepage generated when the liquid is emptied from causing damage to the sealing rubber mold 63, and the fixing method is simple, which is conducive to reducing the manufacturing cost of the dam concrete penetration and dissolution device 100.

[0053] Please continue reading Figure 1 In some embodiments, the dam concrete seepage dissolution device 100 may further include a first clamping member 66 and a second clamping member 67 that match each other. The first clamping member 66 is connected to the back pressure chamber 62, and the second clamping member 67 is connected to the seepage chamber 61. A seal may be provided at the connection between the seepage chamber 61 and the back pressure chamber 62 to avoid leakage during the test. Thus, a quick connection between the seepage chamber 61 and the back pressure chamber 62 can be achieved, thereby simplifying the installation of the dissolution chamber 6.

[0054] Exemplarily, the first clamping member 66 may be a clamping support, and the second clamping member 67 may be a clamping member, which may be connected to a clamping knob 68. When in use, the clamping member may be rotated close to the osmotic pressure chamber 61, and then the clamping knob 68 may be tightened to achieve the purpose of fixing.

[0055] Please continue reading Figure 1 In some embodiments, the dam concrete penetration and corrosion device 100 may further include a bracket 75. One end of the bracket 75 is connected to the corrosion chamber 6, and the other end is connected to the constant temperature water tank 7. This arrangement can support the corrosion chamber 6 through the bracket 75, thereby facilitating the assembly efficiency of the dam concrete penetration and corrosion device 100.

[0056] Please continue reading Figure 1 In some embodiments, the thermostatic water tank 7 may include a heater 71, an insulating inner wall 72, an insulating foam 73, and an insulating outer wall 74. The insulating inner wall 72, the insulating foam 73, and the insulating outer wall 74 are stacked in sequence. The heater 71 is electrically connected to the control terminal 1. Among them, the insulating outer wall 74 and the insulating inner wall 72 can have the function of heat insulation. Therefore, the heating efficiency of the heater 71 can be controlled by the control terminal 1, and the insulating inner wall 72, the insulating foam 73, and the insulating outer wall 74 can ensure the insulation effect of the thermostatic water tank 7.

[0057] Please continue reading Figure 1 In some embodiments, the osmotic contaminant isolation element 4 may have a first accommodation chamber. A first diaphragm 41 is provided in the first accommodation chamber. The first diaphragm 41 is used to separate the first accommodation chamber into an osmotic chamber 42 and a first isolation chamber 43. The osmotic chamber 42 is connected to the osmotic volume controller 2, and the first isolation chamber 43 is connected to the dissolution chamber 6. Therefore, the osmotic volume controller 2 can be prevented from being damaged by the acidic corrosive solution through the first diaphragm 41, which is conducive to improving the reusability of the dam concrete osmotic dissolution device 100.

[0058] Exemplarily, the back pressure pollutant isolation member 5 may have a second accommodating chamber. A second diaphragm 51 is provided in the second accommodating chamber. The second diaphragm 51 is used to separate the second accommodating chamber into a back pressure chamber 52 and a second isolation chamber 53. The back pressure chamber 52 is connected to the back pressure volume controller 3, and the second isolation chamber 53 is connected to the dissolution chamber 6. Thus, the back pressure volume controller 3 can be prevented from being damaged by the acidic corrosive solution through the second diaphragm 51, which is conducive to improving the reusability of the dam concrete penetration dissolution device 100.

[0059] Exemplarily, the osmotic pressure chamber 42 may have an osmotic pressure inlet valve 421 and an osmotic pressure inlet exhaust valve 422, and the osmotic pressure inlet valve 421 is connected to the osmotic pressure volume controller 2. The first isolation chamber 43 may have an osmotic pressure outlet valve 431 and an osmotic pressure outlet exhaust valve 432. The back pressure accommodating chamber may have a back pressure inlet valve 521 and a back pressure inlet exhaust valve 522, and the back pressure inlet valve 521 is connected to the back pressure volume controller 3. The second isolation chamber 53 may have a back pressure outlet valve 531 and a back pressure outlet exhaust valve 532.

[0060] The osmotic chamber 61 may be provided with an osmotic exhaust valve 612 and an osmotic valve 613 on the top and side surfaces, and the osmotic exhaust valve 612 is used to exhaust the gas from the osmotic chamber 61. The osmotic valve 613 is connected to the osmotic liquid outlet valve 431, and the osmotic valve 613 is used to inject the erosion solution. The back-pressure chamber 62 may also be provided with a back-pressure drainage valve and a back-pressure valve 623 on the bottom and side surfaces, and the back-pressure drainage valve is used to exhaust the gas from the back-pressure chamber 62, and the back-pressure valve 623 is connected to the back-pressure liquid outlet valve 531, and the back-pressure valve 623 is used to inject the erosion solution.

[0061] A test method is described below, which is applied to the above-mentioned dam concrete dissolution device. The test method includes the following steps.

[0062] S1: Cut the test piece 200 into sheets. Specifically, a rock cutter can be used to cut the test piece 200 into sheets with a thickness of 2 cm. This arrangement can solve the problem of long dissolution period and unclear effect.

[0063] S2: Fix the sheet-like test piece 200 on the water-permeable plate 8. Specifically, the sealing rubber mold 63 can be bonded around the test piece 200 with sealing latex, and the test piece 200 is fixed on the water-permeable plate 8. After the glue is completely hardened, the test piece 200 is immersed in de-particle water for 3 days to make it saturated.

[0064] S3: Assemble the dissolution chamber 6. First, rotate the support rod 64 to the upper part of the specimen 200, rotate the fastener 65 to press the sheet specimen 200 tightly against the water-permeable plate 8, place the sealing rubber ring in the groove of the back-pressure chamber 62, then cover the osmotic pressure chamber 61 on the back-pressure chamber 62, and then tighten the buckle knob 68 to assemble the osmotic pressure chamber 61 and the back-pressure chamber 62 together.

[0065] S4: Fill the osmotic pressure volume controller 2 with a first volume of deionized water, and fill the back pressure volume controller 3 with a second volume of deionized water. Specifically, the osmotic pressure volume controller 2 is filled with deionized water to 80% of the maximum volume, and the back pressure volume controller 3 is also filled with deionized water to 20% of the maximum volume.

[0066] S5: Filling the osmotic pollutant isolation element 4 and the back-pressure pollutant isolation element 5. Specifically, the osmotic pollutant isolation element 4 is filled with a solution, and the space outside the first diaphragm 41 is filled with deionized water. The osmotic pressure inlet valve 421 and the osmotic pressure inlet exhaust valve 422 are opened, and the solution injected from the osmotic pressure inlet valve 421 is deionized water, and the injection volume is 80% of the total volume of the osmotic pollutant isolation element 4. The other 20% of the volume is injected from the osmotic pressure outlet valve 431. The injected solution is 6 mol / L ammonium nitrate solution or ammonium chloride solution. The back-pressure pollutant isolation element 5 is also operated in the same way.

[0067] S6: injecting liquid into the dissolution chamber 6. Specifically, injecting liquid into the osmotic pressure chamber 61 and the back pressure chamber 62 of the dissolution chamber 6 respectively, and the injected solution is a 6 mol / L ammonium nitrate solution or ammonium chloride solution. After the injection is completed, the dissolution chamber 6 should be placed at an angle to observe whether the osmotic pressure exhaust valve 612 and the back pressure drain valve of the dissolution chamber 6 are poured out by the solution. If no solution is poured out, the solution should be replenished.

[0068] S7: Connect the osmotic pressure volume controller 2 and the back pressure volume controller 3 to the control terminal 1, and use the osmotic pressure catheter to connect the osmotic pressure pollutant isolation element 4 to the osmotic pressure volume controller 2. Exhaust the osmotic pressure catheter before connection. The back pressure volume controller 3 and the back pressure pollutant isolation element 5 are also connected in the same way.

[0069] S8: The osmotic pressure pollutant isolation piece 4 and the counter-pressure pollutant isolation piece 5 are connected to the dissolution chamber 6. Before the connection, the connecting pipes of the osmotic pressure pollutant isolation piece 4 and the counter-pressure pollutant isolation piece 5 are exhausted.

[0070] S9: Put the dissolution chamber 6 into the constant temperature water tank 7. Specifically, the constant temperature water tank 7 is filled with water at 25°C, and the dissolution chamber 6 is put therein, and the heater 71 is turned on.

[0071] S10: The control terminal 1 applies osmotic pressure and back pressure through the osmotic pressure volume controller 2 and the back pressure volume controller 3. Specifically, the osmotic pressure volume controller 2 and the back pressure volume controller 3 are controlled to apply the set osmotic pressure and back pressure, carry out the dissolution test, and record the pressure change and the permeability change during the dissolution process. After the dissolution time reaches the set time, the pressurization is stopped, the test piece 200 is taken out, and the dissolution test is completed.

[0072] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0073] The above is only a specific embodiment 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 substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A dam concrete seepage and dissolution device, characterized in that: The dam concrete seepage and corrosion device comprises: Control terminal; an osmotic pressure and volume controller, the osmotic pressure and volume controller being electrically connected to the control terminal; a back-pressure volume controller, the back-pressure volume controller being electrically connected to the control terminal; an osmotic contaminant isolation element, the osmotic contaminant isolation element being in communication with the osmotic volume controller and being used to isolate the etching solution; a back-pressure contaminant isolation element, the back-pressure contaminant isolation element being in communication with the back-pressure volume controller and configured to isolate the etching solution; A dissolution chamber, the dissolution chamber being in communication with both the osmotic pressure contaminant isolation element and the counter-pressure contaminant isolation element, the dissolution chamber being provided with a water-permeable plate having a plurality of water-permeable holes, and the water-permeable plate being used to fix the test piece; A constant temperature water tank having a containing space, wherein the corrosion chamber is located in the containing space, and the constant temperature water tank is used to provide a constant temperature corrosion environment for the corrosion chamber.

2. The dam concrete seepage and corrosion device according to claim 1, characterized in that: The dissolution chamber includes an osmotic pressure chamber and a back pressure chamber. The osmotic pressure chamber is communicated with the osmotic pressure controller, and the back pressure chamber is communicated with the back pressure controller. The back pressure chamber is located in the osmotic pressure chamber and is detachably connected to the osmotic pressure chamber.

3. The dam concrete seepage and corrosion device according to claim 2, characterized in that: The osmotic pressure chamber has an osmotic pressure observation window, the back pressure chamber has a back pressure observation window, and the osmotic pressure observation window is directly opposite to the back pressure observation window.

4. The dam concrete seepage and corrosion device according to claim 2, characterized in that: The dam concrete penetration and corrosion device further includes a sealing rubber mold, and the test piece is bonded to the permeable plate via the sealing rubber mold.

5. The dam concrete seepage and corrosion device according to claim 4, characterized in that: The dam concrete seepage and corrosion device also includes a support rod and a fastener, wherein the support rod is rotatably connected to the permeable plate, one end of the fastener is connected to the support rod, and the other end abuts against the specimen to fix the specimen on the permeable plate.

6. The dam concrete seepage and corrosion device according to claim 2, characterized in that: The dam concrete seepage and corrosion device further includes a first clamping member and a second clamping member that match each other. The first clamping member is connected to the back pressure chamber, and the second clamping member is connected to the seepage pressure chamber.

7. The dam concrete seepage and corrosion device according to claim 1, characterized in that: The dam concrete seepage dissolution device further comprises a bracket, one end of which is connected to the dissolution chamber, and the other end of which is connected to the constant temperature water tank.

8. The dam concrete seepage and corrosion device according to claim 1, characterized in that: The constant temperature water tank includes a heater, a thermal insulation inner wall, thermal insulation foam and a thermal insulation outer wall, wherein the thermal insulation inner wall, thermal insulation foam and thermal insulation outer wall are stacked in sequence, and the heater is electrically connected to the control terminal.

9. The dam concrete seepage and corrosion device according to claim 1, characterized in that: The osmotic contaminant isolation element has a first accommodating chamber, in which a first diaphragm is provided. The first diaphragm is used to separate the first accommodating chamber into an osmotic chamber and a first isolation chamber. The osmotic chamber is connected to the osmotic volume controller, and the first isolation chamber is connected to the dissolution chamber.

10. A testing method, characterized in that: The test method is applied to the dam concrete penetration and corrosion device according to any one of claims 1 to 9, and the test method comprises the following steps: Cut the specimen into slices; Fixing the sheet-like test piece on a water-permeable plate; The osmotic pressure volume controller is filled with a first volume of deionized water, and the back pressure volume controller is filled with a second volume of deionized water; Filling the seepage contaminant isolation element and the back pressure contaminant isolation element with liquid; Filling the dissolution chamber with liquid; The dissolution chamber is placed in a constant temperature water tank, and the control terminal applies osmotic pressure and back pressure through the osmotic pressure volume controller and the back pressure volume controller.

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