CN220064058U - Concrete underwater repair simulation test device - Google Patents
Concrete underwater repair simulation test device Download PDFInfo
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- CN220064058U CN220064058U CN202320690056.9U CN202320690056U CN220064058U CN 220064058 U CN220064058 U CN 220064058U CN 202320690056 U CN202320690056 U CN 202320690056U CN 220064058 U CN220064058 U CN 220064058U
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- 238000012360 testing method Methods 0.000 title claims abstract description 73
- 230000008439 repair process Effects 0.000 title claims abstract description 48
- 238000004088 simulation Methods 0.000 title claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 30
- 230000009471 action Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a concrete underwater repair simulation test device, which comprises a closed container, wherein the length-diameter ratio of the closed container is not less than 2.5:1, one end of the closed container is connected with a pressure water pump, and the other end of the closed container is connected with a water outlet pipe; the device is characterized in that an objective table for placing a concrete test block is arranged in the closed container, and a coating device for coating the surface of the concrete test block with an underwater repair material is further connected to the top of the closed container. The underwater concrete repair simulation test device provided by the utility model can simulate the engineering field water environment condition, can simulate the engineering field environment condition to carry out indoor simulation test, can carry out rapid test and detection on the prepared underwater repair material to obtain the underwater repair material meeting the preset requirement, can greatly simplify the test difficulty and test cost of the underwater concrete repair material, and obviously reduces the construction period of the underwater concrete repair engineering of the geotechnical concrete building.
Description
Technical Field
The utility model relates to the technical field of underwater repair of hydraulic concrete buildings, in particular to a concrete underwater repair simulation test device.
Background
The concrete underwater repair material at the present stage is mainly divided into three systems: underwater non-dispersed concrete systems, epoxy resin systems, polyurethane systems. The underwater undispersed concrete system is mainly applied to reinforcement or reinforcement repair with large depth defect or convenient vertical mold grouting pouring construction, and has the advantages of convenient construction and low cost; the method has the defects of low underwater drawing strength and narrow application range, and is only suitable for repairing large underwater pits. The polyurethane system is mainly applied to underwater leaking stoppage grouting repair, has the advantages that the polyurethane material reacts rapidly underwater, the rapid leaking stoppage effect can be achieved, and the material has better flexibility, thereby being beneficial to keeping the telescoping function of the structural joint; the defects are that the material body and the bonding strength are weaker, the material performance is reduced rapidly along with the time, and the material is not suitable for being used under the working condition of long-term stress, and is not suitable for repairing the underwater concrete thin layer. Compared with the two systems, the epoxy resin system has better body strength, bonding strength and certain flexibility, and has absolute advantages in underwater bonding strength compared with other two systems for underwater thin layer repair.
Although the epoxy resin system has better body strength, bonding strength and certain flexibility, in practical application, the prepared epoxy resin underwater repair material is applied in different application modes according to different application scenes, and in order to ensure the reliability of engineering application, field test is required to be carried out on an engineering site, and engineering application is carried out after the test is qualified. The method is used for testing in engineering field, the test period is longer, the test difficulty and the test cost are higher due to the influence of underwater operation, and particularly, due to the fact that the material proportion is different and the engineering field environment is different, such as water depth, temperature and flow rate, the field test is often needed for a plurality of times to obtain qualified proportion materials, so that the underwater bonding strength and the breaking elongation of the materials in underwater thin layer repair meet the expected requirements, the engineering transformation period is longer, and the cost is higher.
Based on the above, we design a simulation test device for simulating the engineering field conditions and rapidly preparing the underwater repair material meeting the engineering performance requirements.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides the underwater concrete repair simulation test device, which performs an indoor simulation test by simulating the field water environment condition of the engineering, realizes the rapid preparation of the underwater repair material, greatly simplifies the test difficulty and test cost of the underwater concrete repair material, and remarkably reduces the construction period of the underwater concrete repair engineering of the geotechnical concrete building.
In order to solve the technical problems, the utility model adopts the following technical scheme: the underwater concrete repairing simulation test device comprises a closed container, wherein the closed container is a cuboid or a cylinder, the length-diameter ratio of the closed container is 2.5:1, one end of the closed container is connected with a pressure water pump, and the other end of the closed container is connected with a water outlet pipe; an objective table for placing a concrete test block is arranged in the closed container, and the top of the closed container is also connected with a coating device for coating the surface of the concrete test block with an underwater repair material; the coating device comprises a coating pipe, the end part of the coating pipe is connected with a coating head, two limiting spherical shells are symmetrically connected on the outer wall of the coating pipe, a limiting spherical ring is connected on a cover plate of a closed container, a through hole for the coating pipe to pass through is formed in the middle of the limiting spherical ring, wherein the inner wall of the limiting spherical shell and the outer wall of the limiting spherical ring are positioned on the same spherical surface, the connection part of the upper end part and the lower end part of the limiting spherical ring with the limiting spherical shell and the coating pipe is provided with 10-20cm vertical height difference, and the two end faces of the limiting spherical shells and the bottom surface and the top surface of the cover plate are provided with 10-20cm vertical height difference.
In the preferred scheme, the outlet of the pressure water pump is connected with a first ball valve, the water outlet pipe is connected with a second ball valve, and the first ball valve and the second ball valve are used for enabling test water in the closed container to reach preset pressure under the pressurization effect of the pressure water pump after the opening degree of the first ball valve and the second ball valve is adjusted.
In a preferred scheme, the one-way valve and the gate valve are connected to the coating pipe.
In a preferred embodiment, the stage top is configured as a recess for placing a concrete test block.
Compared with the prior art, the utility model has the following beneficial effects:
1. the underwater concrete repair simulation test device provided by the utility model can simulate the engineering field water environment condition, simulate the engineering field environment condition to carry out an indoor simulation test, carry out a rapid test and detection on the prepared underwater repair material to obtain the underwater repair material meeting the preset requirement, provide technical support for replacing the engineering field test with the indoor simulation test, greatly simplify the test difficulty and the test cost of the underwater concrete repair material, and obviously reduce the construction period of the underwater concrete repair engineering of the geotechnical concrete building.
2. The underwater concrete repair simulation test device provided by the utility model realizes the coating operation of the concrete test block in the closed pressure space, has high degree of freedom in the coating process, and can simulate the actual engineering construction process.
Drawings
FIG. 1 is a schematic structural view of a concrete underwater repair simulation test device.
Fig. 2 is a schematic structural view of a coating device in a concrete underwater repair simulation test device.
Fig. 3 is a schematic structural view of a limiting ball ring in a concrete underwater repair simulation test device.
Fig. 4 is a schematic structural view of a coated pipe in a concrete underwater repair simulation test device according to the present utility model.
Fig. 5 is a schematic view showing a state of a coating device in a concrete underwater repair simulation test device according to the present utility model.
FIG. 6 is a schematic structural view of an objective table in a concrete underwater repair simulation test device.
In the above figures: 1. a closed container; 11. a cover plate; 12. limiting ball rings; 2. a pressure water pump; 3. a water outlet pipe; 4. an objective table; 41. a concave table; 5. a coating device; 51. coating the tube; 52. a coating head; 53. limiting the spherical shell; 54. a one-way valve; 55. a gate valve; 6. a first ball valve; 7. and a second ball valve.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
Referring to fig. 1-6, as a preferred embodiment of the present utility model, a concrete underwater repair simulation test device is provided, including a closed container 1, wherein the closed container 1 adopts a rectangular hollow body or a cylindrical hollow body, the aspect ratio of the closed container 1 is 2.5-5:1, one end of the closed container 1 is connected with a pressure water pump 2, and the other end is connected with a water outlet pipe 3; an objective table 4 for placing a concrete test block is arranged in the closed container 1, and a coating device 5 for coating an underwater repair material on the surface of the concrete test block is also connected to the top of the closed container 1; the coating device 5 comprises a coating pipe 51, the end part of the coating pipe 51 is connected with the coating head 52, the coating head 52 is made of a flat nozzle type rubber material, two limiting spherical shells 53 are symmetrically connected on the upper and lower sides of the outer wall of the coating pipe 51, a limiting spherical ring 12 is connected on a cover plate 11 of the closed container 1, a through hole 13 for the coating pipe 51 to pass through is formed in the middle of the limiting spherical ring 12, wherein the inner wall of the limiting spherical shell 53 and the outer wall of the limiting spherical ring 12 are positioned on the same spherical surface, the vertical height difference of 10-20cm is formed between the upper and lower ends of the limiting spherical shells 12 and the connecting part of the limiting spherical shells 53 and the coating pipe 51, the vertical height difference of 10-20cm is formed between the end faces of the two limiting spherical shells 53, namely the lower section of the limiting spherical shell positioned on the upper part and the upper end face of the limiting spherical shell positioned on the lower part, and the bottom face and the top face of the cover plate 11, the vertical height difference provides the degree of freedom of the coating pipe 51 in the coating process, and the coating pipe 51 can be rotated within a certain range, the practical application environment can be realized by using the simulated pressure to support the concrete to realize the coating process, and the practical construction environment is realized by using the simulated construction method.
When the method is used for testing, the conditions of the flow speed, the pressure intensity and the like of the engineering field are simulated by controlling the environmental temperature conditions, so that the accurate simulation test close to the engineering field is realized indoors, the simulation test can be performed by adopting the method, the traditional material performance verification and detection mode which is necessary to perform the underwater simulation test on the engineering field can be replaced, the test difficulty and the test cost of the underwater repair material of the concrete are greatly simplified, and the construction period of the underwater repair engineering of the geotechnical concrete building is remarkably reduced.
In some preferred embodiments, the outlet of the pressure water pump 2 is connected with a first ball valve 6, the water outlet pipe 3 is connected with a second ball valve 7, after the opening degree of the first ball valve 6 and the second ball valve 7 is adjusted, the test water in the closed container 1 reaches a preset pressure under the pressurizing action of the pressure water pump 2, in order to enable the bottom of the closed container 1 to reach a sufficient pressure, the opening degree of the second ball valve can be adjusted to be small, the pressure water pump 2 is used for pressurizing, and the engineering on-site underwater pressure condition is simulated.
In some preferred embodiments, to prevent the reverse flow of the test water in the closed vessel 1, the check valve 54 and the gate valve 55 are connected to the coating pipe 51 in this embodiment, and when the casting device is connected, the gate valve 55 is closed first, and after the casting device is connected, the underwater repair material is coated on the concrete block through the coating pipe 51.
In other preferred embodiments, to ensure the reliability of the test process and to avoid the concrete block from being displaced by external forces during the water flow or coating process, referring to fig. 6, the top of the stage 4 is configured with a recess 41 for placing the concrete block.
Before performing a simulation test, the test device provided by the utility model is used for performing underwater detection on an engineering field needing underwater concrete restoration, determining the water temperature, the flow rate and the pressure of the engineering field to be restored, detecting the underwater appearance condition of the engineering field, removing dust, milk skin and loose particles on a concrete base surface, chiseling off a surface pollution layer and determining the surface roughness of the concrete base surface, wherein the roughness comprises the roughness depth and the distribution condition;
preparing a concrete test block according to the actual concrete proportion of the engineering, roughening the surface of the concrete test block after the concrete test block is qualified by curing, so that the roughness of the surface of the concrete test block is equivalent to the roughness of an engineering field underwater concrete base surface;
then placing a concrete test block at the bottom of an indoor closed container 1, regulating the indoor temperature and the temperature of test water to be consistent with the engineering field underwater temperature, filling water in the closed container 1, and pressurizing the interior of the closed container to be the same as the engineering field pressure by utilizing a pressure water pump 2, a first ball valve 6 and a second ball valve 7;
then coating an interfacial agent on the surface of the concrete test block;
after the interfacial agent is coated and aged for 10-30min, uniformly coating the prepared underwater repair material on a concrete test block when the interfacial agent loses fluidity;
and finally, maintaining the water temperature, the flow rate and the pressure of the test, and measuring the underwater bonding strength, the elongation at break and other performance parameters of the repairing layer on the concrete surface after curing for 3-4 days.
By repeating the method, the proportion of the underwater repair material is adjusted during repeated experiments until the underwater bonding strength and the elongation at break are determined to meet the preset requirements, and the underwater repair material meeting the engineering field preset repair requirements is obtained.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (4)
1. The underwater concrete repairing simulation test device is characterized by comprising a closed container, wherein the closed container is a cuboid or a cylinder, the length-diameter ratio of the closed container is 2.5:1, one end of the closed container is connected with a pressure water pump, and the other end of the closed container is connected with a water outlet pipe; an objective table for placing a concrete test block is arranged in the closed container, and the top of the closed container is also connected with a coating device for coating the surface of the concrete test block with an underwater repair material; the coating device comprises a coating pipe, the end part of the coating pipe is connected with a coating head, two limiting spherical shells are symmetrically connected on the outer wall of the coating pipe, a limiting spherical ring is connected on a cover plate of a closed container, a through hole for the coating pipe to pass through is formed in the middle of the limiting spherical ring, wherein the inner wall of the limiting spherical shell and the outer wall of the limiting spherical ring are positioned on the same spherical surface, the connection part of the upper end part and the lower end part of the limiting spherical ring with the limiting spherical shell and the coating pipe is provided with 10-20cm vertical height difference, and the two end faces of the limiting spherical shells and the bottom surface and the top surface of the cover plate are provided with 10-20cm vertical height difference.
2. The device for simulating the underwater concrete repair according to claim 1, wherein an outlet of the pressure water pump is connected with a first ball valve, the water outlet pipe is connected with a second ball valve, and the first ball valve and the second ball valve are used for enabling test water in the closed container to reach a preset pressure under the pressurizing action of the pressure water pump after the opening degree is adjusted.
3. The underwater concrete repair simulation test device according to claim 1, wherein the coating pipe is connected with a one-way valve and a gate valve.
4. The underwater concrete repair simulation test apparatus as claimed in claim 1, wherein the stage top is constructed as a concave stage for placing the concrete test block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320690056.9U CN220064058U (en) | 2023-03-31 | 2023-03-31 | Concrete underwater repair simulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320690056.9U CN220064058U (en) | 2023-03-31 | 2023-03-31 | Concrete underwater repair simulation test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220064058U true CN220064058U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320690056.9U Active CN220064058U (en) | 2023-03-31 | 2023-03-31 | Concrete underwater repair simulation test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220064058U (en) |
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2023
- 2023-03-31 CN CN202320690056.9U patent/CN220064058U/en active Active
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