CN211122457U - Device for chloride ion transmission test in concrete under hydraulic pressure environment - Google Patents
Device for chloride ion transmission test in concrete under hydraulic pressure environment Download PDFInfo
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- CN211122457U CN211122457U CN201921191670.0U CN201921191670U CN211122457U CN 211122457 U CN211122457 U CN 211122457U CN 201921191670 U CN201921191670 U CN 201921191670U CN 211122457 U CN211122457 U CN 211122457U
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Abstract
The utility model relates to a device that is arranged in concrete under hydraulic pressure environment chloride ion transmission test, the device are a sealed cavity structure, including casing and a holding cavity, casing upper portion is equipped with and can opens and closed top cap, top cap upper portion is equipped with the pressure regulating subassembly and is used for the monitoring the manometer of holding cavity internal pressure, the pressure regulating subassembly passes through pipeline coupling assembling and is connected with outside air compressor machine, pour into compound salt solution into in the holding cavity, the concrete sample that awaits measuring place in submergence in compound salt solution in the holding cavity, control holding cavity internal pressure is the setting value, carries out the test. The device can realize the research test of the chloride ion transmission rule of the concrete under constant different water pressures of a plurality of concrete samples.
Description
Technical Field
The utility model relates to a tunnel engineering, structural engineering, geotechnical engineering technical field, concretely relates to a device that is arranged in concrete under water pressure environment chloride ion transmission test.
Background
Urban inland inundation brings huge loss to national economy and seriously affects urban development. Along with the development of underground space in China, many cities propose a deep-buried storage regulation tunnel engineering to solve the problem of urban waterlogging and promote urban modern construction. For the deep-buried storage regulating tunnel, the tunnel is not only in a high-pressure water environment, but also in the action of erosion ion (such as chloride ion, sulfate ion and the like) soaking corrosion and dry-wet circulation. At present, because existing test equipment and devices are complex, and the research on the chloride ion transmission test in the concrete under the multi-sample hydraulic environment cannot be carried out. Therefore, based on the engineering background and the actual situation, the device for the chloride ion transmission test in the concrete under the hydraulic environment is designed and improved, the transmission rule of chloride ions in the concrete under the hydraulic environment is researched, the degradation mechanism of the deep tunnel concrete structure is analyzed, and therefore the effective guidance deep tunnel design theory is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, be suitable for many test samples experimental, experimental convenient device that is arranged in chloride ion transmission test under the water pressure environment in concrete in order to overcome the defect that above-mentioned prior art and equipment exist.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a device that is arranged in concrete under hydraulic pressure environment chloride ion transmission test, the device are a sealed cavity structure, including casing and a holding cavity, casing upper portion is equipped with and can opens and closed top cap, top cap upper portion is equipped with the pressure regulating subassembly and is used for monitoring the manometer of holding cavity internal pressure, the pressure regulating subassembly passes through pipeline coupling assembling and is connected with outside air compressor machine, inject compound salt solution into in the holding cavity, the concrete sample that awaits measuring place in submergence in compound salt solution in the holding cavity, control holding cavity internal pressure is the setting value, tests experimental.
Furthermore, the bottom of the accommodating cavity is also provided with a concrete test placing table for placing concrete samples, and the concrete test placing table consists of a plurality of support columns and a plurality of layers of flat plates arranged on the support columns.
Furthermore, the bottom of the shell is provided with a solution discharging or air exhausting port.
Further, the pressure regulating assembly comprises a pressure regulating valve with a pressure gauge, an air inlet valve connected with the pressure regulating valve through a pipeline, and an air outlet valve.
Further, pipeline coupling assembling includes the pipeline, locates pipe crossover sub and air compressor machine crossover sub in the pipeline.
Furthermore, the lower part of the top cover is provided with a groove matched with the upper end of the shell, a rubber sealing ring is arranged in the groove, and the top cover is sealed with the upper end of the shell through a fastening piece.
Further, the fastener comprises a plurality of screws and nuts, the lower ends of the screws are fixed at the bottom of the shell, the upper ends of the screws penetrate through the top cover, the nuts are screwed at the upper ends of the screws, and the top cover is fastened at the upper end of the shell.
Furthermore, the shell is a round tube-shaped organic glass, and the lower end of the shell is fixed on the base.
Further, the wall thickness of the organic glass is 10-20 mm.
Compared with the prior art, the beneficial effects of the utility model are embodied in following several aspects:
(1) the device greatly simplifies the structure, is convenient for carrying out the transmission test research of chloride ions in concrete under the multi-sample water pressure environment, and has convenient operation and accurate test;
(2) the utility model is provided with the pressure regulating valve and the pressure indicating gauge, and the double pressure control system can not only simplify the test device, but also effectively set the initial pressure value and maintain the pressure constant;
(3) the top cover and the shell can be effectively sealed at a sealing part to form stable pressure, so that the purpose of a pressure test in the whole instrument device is realized;
(4) the novel concrete that sets up and be used for placing the concrete sample of this experiment tries to place the platform, simplifies test device, reduces the device volume to reach many concrete samples and carry out experimental purpose jointly.
Drawings
Fig. 1 is a schematic view of the structure of the main view direction of the present invention;
FIG. 2 is a schematic top view of the present invention;
fig. 3 is a schematic perspective view of the present invention;
fig. 4 is a schematic structural view of a concrete sample placement table.
In the figure: 1-a pressure regulating valve; 2-an air inlet valve; 3-an air outlet valve; 4-a pressure gauge; 5-a nut; 6-top cover; 7-a rubber sealing ring; 8-screw rod; 9-organic glass; 10-concrete sample; 11-a base; 12-foot pad;
a tube; 14-a crossover joint;
a pipe, 16-air compressor crossover; 17-a pressure gauge on the pressure regulating valve; 18-a pressure regulating valve; 19-solution or vent; 20-a pillar; 21-plate.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
The utility model provides a device for chloride ion transmission is experimental under hydraulic pressure environment in concrete, refers to 1-4, and the device is a sealed cavity structure, including casing and a holding cavity, casing upper portion is equipped with and can opens and closed top cap 6, and 6 upper portions of top cap are equipped with the pressure regulating subassembly and are used for monitoring the manometer 4 of holding cavity internal pressure, the pressure regulating subassembly passes through pipeline coupling assembling and is connected with outside air compressor machine, injects compound salt solution in the holding cavity, and the concrete sample that awaits measuring place in the holding cavity and submergence in compound salt solution, control holding cavity internal pressure is the setting value, carries out the test.
In particular, the device itself mainly comprises two parts: the hydraulic pressure test instrument comprises a top cover part and a base part, and then a complete test device is formed by the top cover part and the base part together with an external air compressor.
As shown in fig. 2, the top cover 6 mainly comprises the following parts above the top cover 6: the pressure regulating valve 1 and the air inlet valve 2 form an instrument pressurizing inlet, the pressure regulating valve 1 is also provided with an air outlet valve 3, the air inlet valve 2 and the air outlet valve 3 are provided with pressure regulating valves 18, the pressure regulating valve 1 is connected with an air compressor through a conduit to achieve the purpose of pressurizing, the pressure regulating valve 1 is provided with a pressure gauge 17, and the required conduit is composed of a conduit
A pipe 13 and
the pipe 15 is formed by a crossover 14 and is connected to an air compressor crossover 16 to form a connecting pipe. A sealing device is arranged on the inner side of the top cover 6 and consists of a rubber sealing ring 7 and a rubber sealing ring clamping groove, so that the instrument is guaranteed to have a good sealing effect, and the pressure is maintained to be stable.
The base part of the hydraulic environment pressurization instrument is shown in figure 1 and comprises a screw 8, and a top cover 6 part and a base 11 part of the instrument are connected into a whole through a nut 5 on the top cover 6; the periphery of the organic glass 9 is organic glass and is directly fixed with the base 11; a base 11 for supporting the whole instrument, the base 11 being provided with a solution discharge or exhaust port 19; the instrument is padded with a foot 12 to prevent direct contact of the instrument with the ground.
An air compressor is arranged in an external instrument and is connected with an air compressor connector through an air compressor connector 16, so that the purpose of pressurizing the inside of the instrument can be achieved.
In a specific test, the operation method is as follows:
step 1: firstly, the four nuts 5 on the top cover 6 are unscrewed, and the top cover 6 is separated; if the rubber sealing ring 7 falls off in the process of taking out the top cover 6, the rubber sealing ring is firstly stored, and before the top cover is finally closed, the rubber sealing ring is placed in a sealing groove of the top cover;
step 2: pouring the compound salt solution prepared in advance according to the test requirements into an instrument until the mixed solution is completely filled; firstly, placing 4 concrete samples 10 on the bottommost layer, then using a concrete test placing table, wherein the concrete test placing table consists of a plurality of support columns 20 and a plurality of layers of flat plates 21 arranged on the support columns 20, placing the other 8 samples on the table, and soaking the other 8 samples in the whole mixed solution to ensure that the solution is completely and fully contacted with the samples; then fixing the rubber sealing ring of the top cover, and covering the top cover 6 on the base of the test instrument; and finally, placing a nut washer and a nut, and completely screwing the nut according to the principle of screwing the nut on the opposite side.
And step 3: connecting the test instrument with an air compressor by using a connecting conduit, connecting a power supply, adjusting a pressure regulating valve to a pressure index specified in a test, and then turning on a switch of the air compressor to pressurize (in the process, keeping the whole air compressor on, and controlling the pressurization by the pressure regulating valve to maintain the pressure stable); this process also can directly open the air inlet valve, closes the gas outlet valve, does not directly open the air compressor machine pressurization through the pressure regulating valve, when pressure expression number to appointed reading, closes the air compressor machine switch, then separates air compressor machine and test instrument.
And 4, step 4: for this test, the test was repeated every 12 hours, repeating the above 3 steps, and starting a new cycle.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (9)
1. A device for chloride ion transmission test in concrete under hydraulic pressure environment is characterized in that the device is a sealed chamber structure and comprises a shell and an accommodating cavity,
the upper part of the shell is provided with a top cover which can be opened and closed, the upper part of the top cover is provided with a pressure regulating component and a pressure gauge for monitoring the internal pressure of the accommodating cavity, the pressure regulating component is connected with an external air compressor through a pipeline connecting component,
and injecting a composite salt solution into the accommodating cavity, placing the concrete sample to be tested in the accommodating cavity and immersing the concrete sample in the composite salt solution, and controlling the pressure in the accommodating cavity to be a set value to perform test.
2. The device for the chloride ion transport test in the concrete under the hydraulic environment according to claim 1, wherein a concrete test placing table for placing the concrete sample is further arranged at the bottom of the accommodating cavity, and the concrete test placing table is composed of a plurality of supporting columns and a plurality of layers of flat plates installed on the supporting columns.
3. The apparatus according to claim 1, wherein the bottom of the casing is provided with a solution or gas outlet.
4. The apparatus of claim 1, wherein the pressure regulating assembly comprises a pressure regulating valve with a pressure gauge, an air inlet valve connected to the pressure regulating valve via a pipeline, and an air outlet valve.
5. The device for the chloride ion transmission test in the concrete in the hydraulic environment as claimed in claim 1, wherein the pipeline connecting assembly comprises a pipeline, a pipe adapter arranged in the pipeline and an air compressor adapter.
6. The device for the chloride ion transmission test in the concrete under the hydraulic environment as claimed in claim 1, wherein the lower part of the top cover is provided with a groove matched with the upper end of the shell, a rubber sealing ring is arranged in the groove, and the top cover is sealed with the upper end of the shell through a fastening piece.
7. The device for the chloride ion transport test in the concrete under the hydraulic environment as claimed in claim 6, wherein the fastening member comprises a plurality of screws and nuts, the lower ends of the screws are fixed at the bottom of the shell, the upper ends of the screws penetrate through the top cover, the nuts are screwed on the upper ends of the screws, and the top cover is fastened on the upper end of the shell.
8. The device for the chloride ion transmission test in the concrete in the hydraulic environment as claimed in claim 1, wherein the shell is a circular tube-shaped organic glass, and the lower end of the shell is fixed on the base.
9. The device for the chloride ion transmission test in the concrete in the hydraulic environment is characterized in that the wall thickness of the organic glass is 10-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921191670.0U CN211122457U (en) | 2019-07-26 | 2019-07-26 | Device for chloride ion transmission test in concrete under hydraulic pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921191670.0U CN211122457U (en) | 2019-07-26 | 2019-07-26 | Device for chloride ion transmission test in concrete under hydraulic pressure environment |
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| Publication Number | Publication Date |
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| CN211122457U true CN211122457U (en) | 2020-07-28 |
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| CN201921191670.0U Active CN211122457U (en) | 2019-07-26 | 2019-07-26 | Device for chloride ion transmission test in concrete under hydraulic pressure environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117169096A (en) * | 2023-08-31 | 2023-12-05 | 重庆交通大学 | Test system and method for simulating dry-wet alternation-alternating water pressure coupling |
| WO2024012393A1 (en) * | 2022-07-13 | 2024-01-18 | 东南大学 | Device for simulating calcium ion dissolution and chloride ion diffusion conditions of cement-based material in underwater area |
-
2019
- 2019-07-26 CN CN201921191670.0U patent/CN211122457U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024012393A1 (en) * | 2022-07-13 | 2024-01-18 | 东南大学 | Device for simulating calcium ion dissolution and chloride ion diffusion conditions of cement-based material in underwater area |
| CN117169096A (en) * | 2023-08-31 | 2023-12-05 | 重庆交通大学 | Test system and method for simulating dry-wet alternation-alternating water pressure coupling |
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