CN216160380U - Intelligent temperature control type high-suction testing device - Google Patents
Intelligent temperature control type high-suction testing device Download PDFInfo
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- CN216160380U CN216160380U CN202120563688.XU CN202120563688U CN216160380U CN 216160380 U CN216160380 U CN 216160380U CN 202120563688 U CN202120563688 U CN 202120563688U CN 216160380 U CN216160380 U CN 216160380U
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
- 239000002689 soil Substances 0.000 claims abstract description 52
- 239000000243 solution Substances 0.000 claims abstract description 51
- 238000005303 weighing Methods 0.000 claims abstract description 37
- 239000012266 salt solution Substances 0.000 claims abstract description 29
- 238000002360 preparation method Methods 0.000 claims abstract description 21
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000012153 distilled water Substances 0.000 claims description 25
- 238000011084 recovery Methods 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 30
- 230000007547 defect Effects 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an intelligent temperature control type high-suction testing device. It includes test box and data acquisition controller, salt solution preparation room, is provided with the steam balance room in the test box, is provided with soil sample box in the steam balance room, is provided with temperature sensor and humidity transducer on the steam balance room, and temperature sensor and humidity transducer are connected with temperature controller and humidity controller in proper order, be connected with electromagnetic relay weighing system on the soil sample box, be provided with relative humidity transducer on the steam balance room, temperature sensor, humidity transducer, temperature controller, humidity controller, electromagnetic relay weighing system, solution preparation controller and relative humidity transducer all are connected with the data acquisition controller, the data acquisition controller is connected with the computer. The utility model solves the defects that the filter paper method test requires insufficient height for experimenters, the test period of saturated salt solution is longer, and the salt solution needs to be replaced frequently.
Description
Technical Field
The utility model relates to an intelligent temperature control type high-suction testing device, and relates to the technical field of geotechnical engineering.
Background
The matrix suction is one of important indexes reflecting the basic properties of unsaturated soil, the properties such as the permeability coefficient of unsaturated soil, the strength of unsaturated soil, the compression property of unsaturated soil and the like can be predicted and analyzed through the matrix suction, and the understanding of the water retention property is an important aspect of research on an unsaturated soil behavior model. Therefore, the development trend of modern unsaturated soil mechanics is to continuously improve the accuracy of unsaturated soil mechanics, the existing method for testing substrate suction is to test by methods such as an axis translation technology, a tensiometer method, a dry-wet thermocouple meter, a filter paper method and the like, the axis translation technology is mostly used in indoor tests, the clay plates with different air inlet values are used for testing the substrate suction, the method is mainly based on a pressure plate instrument for testing, the limitation of the prior art causes that the maximum value of the substrate suction tested by the method can only reach 1500kPa, the substrate suction higher than 1500kPa cannot be obtained by testing, the continuous testing can only be carried out by the filter paper method, a saturated salt solution and the like, the requirement on the sealing performance of the device in the filter paper method testing is higher, the permeability of domestic filter paper can rarely meet the requirement on the testing accuracy, and the requirement on the familiarity degree of operators by the filter paper method is higher. The saturated salt solution test needs to be configured with salt solutions with different concentrations, the salt solutions cannot be automatically supplied, and the indoor temperature and humidity control is rarely performed by using the method in the test. In summary, the limitations of the prior art make high-suction testing difficult.
The high-suction section in the substrate suction is an important component in the soil-water characteristic curve, and the prediction of the unsaturated soil permeability coefficient and strength of the partial soil-water characteristic curve lacking the high suction has certain errors, namely the integrity of the soil-water characteristic curve has great influence on the using effect of the soil-water characteristic curve.
1. The prior art tests for high suction have been carried out by the filter paper method.
2. High suction tests are carried out in the prior art by means of saturated salt solutions.
1. The filter paper method is long in time for testing the high-suction test, the filter paper is easy to be polluted to influence the accuracy of the test result in the later period, and the requirement on experimenters is high.
2. In the high-suction test carried out by the saturated salt solution method, the concentration needs to be continuously increased along with the increase of the suction, the salt solution needs to be continuously prepared at the moment, the balance time is longer, and the test time is longer.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a novel intelligent frost heaving instrument, the device provides a high-suction testing method based on a steam balance technology, the device is simple to operate, easy to operate, high in repeatability and high in automation degree of the whole device, and the main principle is to control the suction testing by applying the atmosphere relative humidity of a closed system where a sample is located. This device is through providing an intelligent control temperature type high suction testing arrangement, and it is not enough to the experimenter requirement height to solve the test of filter paper method. The device solves the defects that the test period of saturated salt solution is long and the salt solution needs to be replaced frequently by providing the intelligent temperature control type high-suction testing device.
The utility model solves the technical problems by the following technical means: the utility model discloses an intelligent temperature control type high-suction testing device, which comprises a testing box, a data acquisition controller and a saline solution preparation chamber, wherein a steam balance chamber is arranged in the testing box, a soil sample box is arranged in the steam balance chamber, a temperature sensor and a humidity sensor are arranged on the steam balance chamber, the temperature sensor and the humidity sensor are sequentially connected with the temperature controller and the humidity controller, an electromagnetic relay weighing system is connected on the soil sample box, a relative humidity sensor is arranged on the steam balance chamber, a saturated saline solution test box, a distilled water test box, a solution preparation controller and a prefabricated solution box are arranged in the saline solution preparation chamber, the prefabricated solution box is connected with a waste liquid recovery system and the steam balance chamber, and the temperature sensor, the humidity sensor, the temperature controller, the humidity controller, the electromagnetic relay weighing system, the solution preparation controller and the relative humidity sensor are all connected with the data acquisition controller, the data acquisition controller is connected with the computer, be provided with the soil sample support in the soil sample box, be provided with the soil sample in the soil sample support, the soil sample support is fixed on the steam balance room through the fixer, steam balance room bottom is provided with the inverted filter, and the inverted filter top is provided with the solution chamber.
And electronic valves are arranged at the joints of the prefabricated solution tank, the waste liquid recovery system and the steam balance chamber.
The fixing device is provided with a sealing plug, and the soil sample support is fixedly connected with the electromagnetic relay weighing system through an adsorbed contact.
The electromagnetic relay weighing system comprises a weighing sensor, an electromagnetic relay switch is arranged at the bottom of the weighing sensor, the weighing sensor is connected with an electromagnetic relay switch console, and the electromagnetic relay switch console is connected with a data acquisition controller.
Saturated saline solution proof box below is provided with magnetic stirrers, be provided with the magnetic head in the saturated saline solution proof box, prefabricated solution box sets up in saturated saline solution proof box below, the distilled water proof box bottom is provided with the booster compressor, saturated saline solution proof box and distilled water proof box top are provided with saline solution supply mouth and distilled water respectively and supply the mouth, all be provided with the stopper on saturated saline solution proof box and the distilled water proof box, the booster compressor is connected with prefabricated solution box, prefabricated solution box is connected with saturated saline solution proof box and distilled water proof box respectively.
This device can test the matrix suction under the different temperatures through providing an intelligent control temperature type high suction testing arrangement, obtains the soil and water characteristic curve under the different temperatures promptly, controls humidity in the testing process simultaneously, and temperature humidity has obtained effective control in the test. The utility model controls the mass weighing through the electromagnetic relay switch, and can carry out the suction test in the humidifying and dehumidifying process at any time.
This device is through providing an intelligent control temperature type high suction testing arrangement, because the time that the water retentivity of characterisation material under the non-stress condition needs reduces, leads to whole test time to shorten greatly.
1. The utility model mainly protects a technical method for automatically weighing mass in a matrix suction test by combining an electromagnetic relay switch with a balance.
2. The utility model mainly protects a technical method for simultaneously testing a plurality of samples and controlling the temperature and humidity in the test in real time.
The utility model has the beneficial effects that:
1. the novel intelligent frost heaving tester provided by the utility model can realize the accurate test of the axial frost heaving force and the axial deformation in the process of freezing the rock-soil mass, and can provide the accurate test of the radial frost heaving force and the frost heaving quantity of the sample, thereby comprehensively reflecting the frost heaving characteristic of the rock-soil mass.
2. The novel intelligent frost heaving tester provided by the utility model can realize accurate test of axial deformation and radial deformation in the ablation process of frozen rock-soil mass and comprehensively reflect the volume shrinkage generated in the ablation process of a test sample.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic structural view of a soil sample box;
FIG. 3 is a schematic diagram of a weighing system of an electromagnetic relay;
fig. 4 is a schematic diagram of a salt solution preparation chamber.
Detailed Description
The present invention will be described in detail with reference to the following specific embodiments and accompanying fig. 1-4, and the following description of the embodiments of the present invention will be further described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and all similar structures and similar variations of the present invention are included in the protection scope of the present invention, and the ton number in the present invention indicates the sum relationship.
The utility model discloses an intelligent temperature control type high-suction testing device which comprises a testing box 18, a data acquisition controller 8 and a saline solution preparation chamber 11, wherein a steam balance chamber 2 is arranged in the testing box 18, a soil sample box 1 is arranged in the steam balance chamber 2, a temperature sensor 5 and a humidity sensor 6 are arranged on the steam balance chamber 2, the temperature sensor 5 and the humidity sensor 6 are sequentially connected with a temperature controller 3 and a humidity controller 4, an electromagnetic relay weighing system 7 is connected on the soil sample box 1, a relative humidity sensor 17 is arranged on the steam balance chamber 2, a saturated saline solution test box 9, a distilled water test box 10, a solution preparation controller 12 and a prefabricated solution box 13 are arranged in the saline solution preparation chamber 11, the prefabricated solution box 13 is connected with a waste liquid recovery system 15 and the steam balance chamber 2, and the temperature sensor 5, the humidity sensor 6, the temperature controller 3, the steam balance chamber 2 and the saline solution preparation chamber 4 are connected with one another, Humidity controller 4, electromagnetic relay weighing system 7, solution preparation controller 12 and relative humidity transducer 17 all are connected with data acquisition controller 8, data acquisition controller 8 is connected with computer 16, be provided with soil sample support 19 in the soil sample box 1, be provided with soil sample 20 in the soil sample support 19, soil sample support 19 passes through fixer 21 to be fixed on steam balance room 2, 2 bottoms in steam balance room are provided with reversed filter 24, and 24 tops in the reversed filter are provided with solution chamber 25.
And electronic valves 14 are arranged at the joints of the prefabricated solution tank 13, the waste liquid recovery system 15 and the steam balancing chamber 2.
The fixer 21 is provided with a sealing plug 22, and the soil sample support 19 is fixedly connected with the electromagnetic relay weighing system 7 through an adsorbed contact 23.
The electromagnetic relay weighing system 7 comprises a weighing sensor 26, an electromagnetic relay switch 27 is arranged at the bottom of the weighing sensor 26, the weighing sensor 26 is connected with an electromagnetic relay switch console 28, and the electromagnetic relay switch console 28 is connected with a data acquisition controller 8.
Saturated saline solution test box 9 below is provided with magnetic stirrer 91, be provided with magnetic head 92 in the saturated saline solution test box 9, prefabricated solution box 13 sets up in saturated saline solution test box 9 below, distilled water test box 10 bottom is provided with booster compressor 94, saturated saline solution test box 9 and distilled water test box 10 top are provided with saline solution supply mouth 96 and distilled water supply mouth 97 respectively, all be provided with stopper 98 on saturated saline solution test box 9 and the distilled water test box 10, booster compressor 94 is connected with prefabricated solution box 13, prefabricated solution box 13 is connected with saturated saline solution test box 9 and distilled water test box 10 respectively.
The utility model mainly comprises the following components in figures 1-3: in fig. 1: 1-a soil sample box; 2-a steam balancing chamber; 3-a temperature controller; 4-a humidity controller; 5-a temperature sensor; 6-a humidity sensor; 7-an electromagnetic relay weighing system; 8-a data acquisition controller; 9-saturated salt solution test chamber; 10-distilled water test chamber; 11-saline solution preparation chamber; 12-solution preparation controller; 13-a prefabricated solution tank; 14-an electronic valve; 15-a waste liquor recovery system; 16-a computer; relative humidity sensor 17. In fig. 2: 20-soil sample; 24-an inverted filter layer; 25-a solution chamber; 21-a holder; 22-a sealing plug; 23-attracted contacts; 17-relative humidity sensor; 19-soil sample support. In fig. 3: 26-a load cell; 27-an electromagnetic relay switch; 28-electromagnetic relay switch console; and 8, a data acquisition controller.
In fig. 1, 1-a soil sample box is mainly used for placing a sample, and a prepared undisturbed sample or a remolded sample is placed on a sample support, the whole sample box is communicated with a steam balance chamber, and steam in the balance chamber is mutually exchanged and balanced with the sample; 2-a steam balancing chamber, wherein the prepared salt solution with a certain concentration is put into the balancing chamber, and a certain steam pressure can be generated in the balancing chamber; 3-a temperature controller for controlling the temperature in the whole test box, controlling the temperature and automatically controlling the temperature after interacting with the temperature sensor; 4-a humidity controller for controlling the humidity in the whole test box, controlling the humidity and automatically controlling the humidity after interacting with the humidity sensor; 5-a temperature sensor for testing the temperature in the whole test box; 6-a humidity sensor for monitoring the humidity in the whole test box in real time; 7-an electromagnetic relay weighing system, wherein the electromagnetic relay weighing system mainly adsorbs a sample to an electronic balance through an electromagnetic relay for direct mass test; 8, a data acquisition controller, which is used for receiving and storing sensor data in the whole test system and transmitting the data to a computer; 9-saturated saline solution test chamber for containing saturated different types of saline solutions; 10-a distilled water test chamber for containing distilled water; 11-a salt solution preparation chamber for placing the whole salt solution configuration controller and a containing container; 12-a solution preparation controller, which is used for placing a solution and distilled water with certain mass into a prefabricated solution box according to the setting of a computer, and mixing to obtain a prepared salt solution with certain saturation; 13-a prefabricated solution tank for containing a prefabricated salt solution with a preset concentration; 14-electronic valves for controlling the intake and discharge of solutions in the respective systems, while being able to calculate the outflow and inflow solution flow rates and to transmit the data to the controller; 15-a waste liquid recovery system, after the test is finished, the solution in the steam balance chamber is recovered into the system, and meanwhile, the replaced salt solution can be put into the waste liquid recovery system when the matrix suction test is carried out in the humidification and dehumidification processes, and then the waste liquid recovery system is filled with the newly configured salt solution in the steam balance chamber; 16-a computer for data acquisition and simple data analysis based on the software platform and sending instructions to the data controller according to the test protocol; and 17-relative humidity sensor, which is mainly used for detecting the humidity in the steam balancing chamber and transmitting the data to the computer for comprehensive analysis.
In FIG. 2, 20-soil sample, the prepared sample, and the sample with poor structure is put into a cutting ring for preservation; 24-a reversed filtering layer, which prevents the solution from splashing on the soil sample to influence the accuracy of the test result when the solution is supplied; 25-a solution chamber for holding a pre-made saline solution; 21-a fixer for fixing the position of the soil sample bracket, wherein the external level bubble can be calibrated; 22-a sealing plug, wherein the sealing plug and the pull rod are adsorbed to the other end of the electromagnetic relay switch for weighing in the weighing process, and are tightly attached to the fixer to play a role in sealing after the weighing process is finished, the sealing plug is tightly contacted with the upper surface of the fixer under the self weight of the soil sample, and plays a good role in buffering in the falling process after the weighing process is finished, so that the soil sample is prevented from being scattered; 23-adsorbed contact which can be adsorbed by the electromagnetic relay switch; 17-relative humidity sensor (introduced in fig. 1); 19-a soil sample bracket for supporting the soil sample.
In FIG. 3, 26-weighing sensors, electromagnetic relay switches are adsorbed for sample mass weighing, and simultaneous weighing of multiple groups of sample masses can be carried out in parallel; 27-an electromagnetic relay switch which is used in cooperation with a weighing sensor to weigh the sample; 28-an electromagnetic relay switch control console for controlling each electromagnetic relay switch according to computer instructions; and 8, a data acquisition controller for acquiring and primarily storing the quality data and transmitting the data to the computer.
In FIG. 4, 9-saturated salt solution test chamber (described in FIG. 1); 91-magnetic stirrer, mainly used for the saturated salt solution to stir, guarantee the salt is in the dissolved state all the time; 13-prefabricated solution tank (introduced in FIG. 1); a booster machine 94, pressurizing the prefabricated solution tank, and conveying the prepared solution to a steam balancing chamber through pressure; 10-distilled water test chamber (introduced in fig. 1); 92-a magnetic head, which is used in cooperation with a magnetic stirrer to stir the solution; a 96-saline solution supply port for supplying saline solution from the outside; 97-distilled water supply port for supplying distilled water from outside; 8-data acquisition controller (introduced in fig. 1); 98-a limiter, which can give an alarm when the solution storage volume in the storage chamber is too low, and can prompt the solution supply.
Example 2
The specific operation method of the utility model is as follows:
1. and (6) detecting the equipment. Before the test is started, the equipment is firstly detected to ensure the working state of each sensor, and whether the temperature and humidity control system in the whole test box runs well or not is detected to check whether the electromagnetic relay switch can run normally or not.
2. And (6) testing. And (3) mounting the prepared sample on a soil sample support, filling a prepared salt solution into a steam balancing chamber by using a computer, and then carrying out balancing operation by using the salt solution, wherein the relative humidity value is obtained by directly injecting saturated salt water into a drying agent. And in the balancing process, the mass of the sample is weighed by utilizing an electromagnetic relay switch within a preset time, and the test can be stopped until the mass of the sample is stable and the suction force inside the sample is balanced. The temperature and humidity can be controlled in the test process, the matrix suction force under different temperature conditions can be tested, and the soil-water characteristic curve under the humidifying and dehumidifying conditions can be tested by changing the concentration of the salt solution.
3. And (4) cleaning the equipment. After the test is finished, equipment cleaning is needed, the scattered soil is cleaned from the equipment, preparation is made for the development of subsequent tests, and all power supplies are turned off.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. The utility model provides an intelligent control temperature type high suction testing arrangement which characterized in that: comprises a test box (18), a data acquisition controller (8) and a salt solution preparation chamber (11), wherein a steam balance chamber (2) is arranged in the test box (18), a soil sample box (1) is arranged in the steam balance chamber (2), a temperature sensor (5) and a humidity sensor (6) are arranged on the steam balance chamber (2), the temperature sensor (5) and the humidity sensor (6) are sequentially connected with a temperature controller (3) and a humidity controller (4), an electromagnetic relay weighing system (7) is connected on the soil sample box (1), a relative humidity sensor (17) is arranged on the steam balance chamber (2), a saturated salt solution test box (9), a distilled water test box (10), a solution preparation controller (12) and a prefabricated solution box (13) are arranged in the salt solution preparation chamber (11), and the prefabricated solution box (13) is connected with a waste liquid recovery system (15) and the steam balance chamber (2), temperature sensor (5), humidity transducer (6), temperature controller (3), humidity controller (4), electromagnetic relay weighing system (7), solution preparation controller (12) and relative humidity transducer (17) all are connected with data acquisition controller (8), data acquisition controller (8) are connected with computer (16), be provided with soil sample support (19) in soil sample box (1), be provided with soil sample (20) in soil sample support (19), soil sample support (19) are fixed on steam balance room (2) through fixer (21), steam balance room (2) bottom is provided with inverted filter (24), and inverted filter (24) top is provided with solution chamber (25).
2. The intelligent temperature control type high-suction testing device according to claim 1, wherein: electronic valves (14) are arranged at the joints of the prefabricated solution tank (13) and the waste liquid recovery system (15) and the steam balance chamber (2).
3. The intelligent temperature control type high-suction testing device according to claim 1, wherein: a sealing plug (22) is arranged on the fixer (21), and the soil sample support (19) is fixedly connected with the electromagnetic relay weighing system (7) through an adsorbed contact (23).
4. The intelligent temperature control type high-suction testing device according to claim 1, wherein: the electromagnetic relay weighing system (7) comprises a weighing sensor (26), an electromagnetic relay switch (27) is arranged at the bottom of the weighing sensor (26), the weighing sensor (26) is connected with an electromagnetic relay switch console (28), and the electromagnetic relay switch console (28) is connected with a data acquisition controller (8).
5. The intelligent temperature control type high-suction testing device according to claim 1, wherein: saturated saline solution proof box (9) below is provided with magnetic stirrer (91), be provided with magnetic head (92) in saturated saline solution proof box (9), prefabricated solution case (13) set up in saturated saline solution proof box (9) below, distilled water proof box (10) bottom is provided with booster compressor (94), saturated saline solution proof box (9) and distilled water proof box (10) top are provided with saline solution supply mouth (96) and distilled water supply mouth (97) respectively, all be provided with stopper (98) on saturated saline solution proof box (9) and distilled water proof box (10), booster compressor (94) are connected with prefabricated solution case (13), prefabricated solution case (13) are connected with saturated saline solution proof box (9) and distilled water proof box (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120563688.XU CN216160380U (en) | 2021-03-19 | 2021-03-19 | Intelligent temperature control type high-suction testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120563688.XU CN216160380U (en) | 2021-03-19 | 2021-03-19 | Intelligent temperature control type high-suction testing device |
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| CN216160380U true CN216160380U (en) | 2022-04-01 |
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| CN202120563688.XU Expired - Fee Related CN216160380U (en) | 2021-03-19 | 2021-03-19 | Intelligent temperature control type high-suction testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116736916A (en) * | 2023-08-11 | 2023-09-12 | 中国电建集团华东勘测设计研究院有限公司 | Soil deformation and soil-water characteristic test device under single saline solution humidity control |
-
2021
- 2021-03-19 CN CN202120563688.XU patent/CN216160380U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116736916A (en) * | 2023-08-11 | 2023-09-12 | 中国电建集团华东勘测设计研究院有限公司 | Soil deformation and soil-water characteristic test device under single saline solution humidity control |
| CN116736916B (en) * | 2023-08-11 | 2023-10-20 | 中国电建集团华东勘测设计研究院有限公司 | Soil deformation and soil-water characteristic test device under single saline solution humidity control |
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