Dry-wet freeze-thaw cycle test device suitable for rock-soil sample

Abstract

The invention discloses a dry-wet freezing and thawing cycle test device suitable for a rock-soil sample. The device comprises a box body structure (a box body, a temperature-proof glass window, an exhaust hole and the like, and a thermal insulation layer is arranged between the inner wall and the outer wall of the box body); the humidity control system comprises a humidity control panel, a humidity system converter, a water storage tank, an atomizing nozzle, a fan, a humidity sensor and the like, drainage grooves and drainage holes are formed in the periphery of the bottom of the box body, and a drainage pipe is externally connected; the temperature control system comprises a temperature control panel, a temperature system converter, a heating pipe, a temperature sensor, a semiconductor refrigeration device and the like; and the quality control system comprises a quality control panel, a quality control converter, a weighing device and a sample placing table. According to the device, the dry-wet freezing and thawing cycle degree is controlled by testing the quality of the sample and converting the quality into the water content of the sample, the freezing and thawing process of the sample is realized by controlling low-temperature freezing and high-temperature thawing, the test efficiency and the test accuracy are improved, and the problems of complex test process and low test precision of the existing dry-wet freezing and thawing cycle test are effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of civil engineering, and in particular relates to a dry-wet freeze-thaw cycle test device suitable for rock and soil samples. Background Art

[0002] In the natural environment, soil is often subjected to rainfall-evaporation and freeze-thaw cycles. The rainfall-evaporation cycle will change the soil water content, temperature, etc., causing serious damage to the soil, and then causing great harm to the project. In particular, some soils with high collapsibility and water sensitivity, such as loess and expansive soil, will experience a sharp drop in soil strength and bearing capacity after experiencing rainfall-evaporation, causing serious harm to foundations, slopes, etc. The freeze-thaw cycle will cause repeated changes in soil volume, leading to soil structure damage, crack formation and strength reduction, thus affecting the safety and stability of the project. In order to simulate the deterioration effects of rainfall-evaporation and freeze-thaw on soil in the natural environment, dry-wet freeze-thaw cycles are often used in experiments to evaluate the mechanical properties of soil, and then guide engineering construction.

[0003] At present, laboratories often use quality control methods to control the degree of dry-wet freeze-thaw cycles, and drying, wetting and freeze-thaw are often carried out separately. The experimental accuracy is poor, the process is complicated and the efficiency is low. Therefore, there is an urgent need for a multifunctional, high-precision dry-wet freeze-thaw cycle test device that integrates drying, wetting, weighing, freezing and melting. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a dry-wet freeze-thaw cycle test device suitable for rock and soil samples. The device integrates drying, wetting, freezing, and melting weighing. Through autonomous calculation, it can monitor the sample quality and moisture content in real time and autonomously control the dry-wet freeze-thaw cycle process.

[0005] The present invention is achieved through the following technical solutions:

[0006] A dry-wet freeze-thaw cycle test device suitable for rock and soil samples, comprising a box structure providing a closed environment, wherein a humidity control system, a temperature control system, and a quality control system are arranged in the box;

[0007] The humidity control system is used to control the water mist concentration in the box to wet the sample and discharge the water;

[0008] The temperature control system is used to control the temperature in the box to achieve low-temperature freezing, high-temperature melting, and drying and dehumidification of rock and soil samples;

[0009] The quality control system is used to monitor the sample quality in real time and convert it into the sample moisture content to ensure smooth dry-wet cycle.

[0010] Furthermore, the box structure consists of a box, an insulation cavity between the inner and outer walls of the box, a thermal insulation layer, leveling bolts located at each corner of the bottom outside the box, an exhaust hole at the center of the top of the box, a socket, and a main switch of the device, wherein the thickness of the bottom thermal insulation layer is thicker than that of the side thermal insulation layer.

[0011] Furthermore, a heat-insulating glass window is provided on the box door arranged outside the box structure, and a wind tunnel for ventilation is provided on the inner wall of the box.

[0012] Furthermore, the humidity control system includes a humidity control panel, which is connected to the humidity converter through a connecting line, and is connected to a water storage tank, an atomizing device, and an atomizing nozzle connected to the atomizing device arranged on the top of the box through a water pipeline, and the water storage tank is also connected to an external water source located outside the box;

[0013] The humidity converter is also connected to a blower, a fan connected to the blower, and a humidity sensor to form a complete humidity control system to monitor the humidity in the box.

[0014] Furthermore, a drainage groove is connected to the bottom of the inner cavity of the box body along the bottom of the box body. The drainage groove is connected to a drainage pipe located outside the box body through a drainage hole to discharge water. The slope of the drainage groove is 2.5° and the direction is from the right rear to the left front.

[0015] Furthermore, the temperature control system includes a temperature control panel, which is connected to a temperature converter. The temperature converter is connected to a heating device via a connecting line. The heating device is disposed in the inner cavity at the bottom of the box. The spirally arranged heating tube is heated by the heating device to increase the temperature inside the box. The heating device is connected to a temperature sensor to form a complete temperature control system to control the temperature inside the box.

[0016] Furthermore, the heating tubes are evenly distributed on the bottom and sides of the box, and the temperature sensor is arranged at the rear diagonal position of the middle part of the box.

[0017] Furthermore, the temperature converter is also connected to a semiconductor refrigeration device arranged at the bottom of the box, and the semiconductor refrigeration device includes a semiconductor refrigeration sheet and a cooling plate, and is connected to a temperature sensor and a temperature control switch on a temperature control panel to form a low-temperature freezing system.

[0018] Furthermore, the quality control system includes a quality control panel, which is connected to a quality control converter and several weighing devices arranged at the bottom of the inner cavity of the box. A sample placement table is provided on the weighing device, which are assembled together into a quality control system. At the same time, the quality control converter can convert the sample mass into the sample moisture content, and monitor the sample mass and moisture content in real time.

[0019] Furthermore, a rotating device is added at the bottom of the sample placement table, and the sample rotation speed is controlled by a servo motor.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention integrates sample drying, wetting, freezing, and melting weighing. The experiment can be carried out by only setting the panel control parameters, simplifying the experimental operation process, reducing the errors caused by human factors during the experiment, and providing more accurate data reference for engineering construction;

[0022] 2. The present invention is also provided with a semiconductor refrigeration device, which can realize the freeze-thaw cycle process of the sample in conjunction with the drying system. The semiconductor refrigeration device is connected to the temperature sensor and the temperature control switch at the same time to form a low-temperature freezing system, which can realize temperature control from -30°C to 300°C, simulating the dry and wet freeze-thaw cycle under different climatic conditions. In this way, the temperature control system can realize both freezing and temperature-controlled thawing and drying;

[0023] 3. The present invention can carry out multiple sample circulation operations simultaneously, ensuring the same circulation environment and realizing batch high-precision control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a front view of the box body of the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the box of the present invention;

[0027] Figure 4 This is a layout diagram of the bottom of the box body of the present invention;

[0028] Figure 5 This is a schematic diagram of the bottom structure of the box body of the present invention;

[0029] Figure 6 It is the inner side layout diagram of the box body of the present invention;

[0030] Figure 7 This is a layout diagram of the heating tubes and cooling plates in the box of the present invention;

[0031] Figure 8 It is the top surface layout diagram of the box body of the present invention;

[0032] Fig. 9 It is a schematic diagram of the top surface structure of the box body of the present invention;

[0033] Figure numerals: 1-humidity control panel, 2-temperature control panel, 3-mass control panel, 4-main switch of the device, 5-door handle of the box door, 6-thermal insulation glass window, 7-box door, 8-heating tube, 9-weighing device, 10-sample placement table, 11-heating device, 12-thermal insulation protection layer, 13-temperature sensor, 14-connecting line, 15-mass converter, 16-temperature converter, 17-water storage tank, 18-atomization device, 19-atomization nozzle, 20-drum Wind device, 21-fan, 22-water pipeline, 23-external water source, 24-humidity converter, 25-humidity sensor, 26-exhaust hole, 27-drain pipe, 28-drain trough, 29-drain hole, 30-wind tunnel, 31-leveling bolt, 32-box, 33-insulation cavity, 34-socket, 35-cooling plate, 36-rotating device, 37-semiconductor refrigeration device, 38-humidity control system, 39-temperature control system, 40-quality control system. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below according to the accompanying drawings.

[0035] Embodiment 1:

[0036] A dry-wet freeze-thaw cycle test device suitable for rock and soil samples, including a box structure that provides a closed environment, controls the environment in the box, protects experimental samples, prevents contamination or damage, ensures the safety of the experimental process, and prevents the experimental materials from bursting;

[0037] The box structure is composed of a box body 32, a heat-insulating cavity 33 formed by a heat-insulating layer 12 between the inner and outer walls of the box body, leveling bolts 31 located at each corner of the outer bottom of the box body, an exhaust hole 26 at the center of the top of the box body, a socket 34, and a main switch 4 of the device. The thickness of the heat-insulating layer at the bottom is thicker than that of the heat-insulating layer on the side. A heat-insulating glass window 6 and a door handle 5 are arranged on the box door 7 arranged outside the box structure, and a wind tunnel 30 for ventilation is arranged on the inner wall of the box body. A humidity control system 38, a temperature control system 39, and a quality control system 40 are arranged in the box body 32;

[0038] The humidity control system 38 is used to control the concentration of water mist in the box, to achieve the functions of conveying water, atomizing the water to wet the sample, and discharging the water;

[0039] The humidity control system 38 includes a humidity control panel 1, which is connected to a humidity converter 24 through a connecting line 14, and is connected to a water storage tank 17, an atomizing device 18, and an atomizing nozzle 19 arranged in a heat-insulating cavity at the top of the box body through a water delivery pipe 22. The water storage tank 17 is also connected to an external water source 23 located outside the box body; the water storage tank 17 is connected to three atomizing devices 18 through a water delivery pipe 22, and an atomizing nozzle 19 is arranged at the lower part of the atomizing device 18. The atomizing nozzle 19 is placed in the box, and the atomizing device 18 can pressurize liquid water into gaseous water and fill the inside of the box body; two blowing devices 20 are provided, and a fan 21 is connected below. The fan position 21 is located at the inner wall of the box body, and a wind tunnel ventilation is provided; two humidity sensors 25 are provided at the two top corners at the rear of the top of the box body, which are connected to the humidity converter 24 to monitor the humidity in the box in real time;

[0040] A drainage groove 28 is connected to the bottom of the inner cavity of the box body along the bottom of the box body. The drainage groove 28 is connected to a drainage pipe 27 located outside the box body through a drainage hole 29 to discharge water. The drainage groove 28 has a slope of 2.5° and is directed from the right rear to the left front.

[0041] That is, three atomizing devices and two blowing devices can be alternately arranged in the heat preservation cavity at the top of the box, and the water storage tank and two humidity sensors are connected to the humidity system converter, and finally connected to the humidity control panel, which can set the atomization concentration and atomization time in the box;

[0042] The temperature control system 39 is used to control the temperature in the box, and achieves drying and dehumidification of the rock and soil samples by heating the heating tubes;

[0043] The temperature control system 39 includes a temperature control panel 2, which is connected to a temperature converter 16. The temperature converter 16 is connected to a heating device 11 via a connecting line 14. The heating device 11 is located in the heat-insulating cavity at the bottom of the box. The spirally arranged heating tube 8 is heated by the heating device 11. The heating principle is electromagnetic induction heating, which increases the temperature in the box. The heating tube 8 is evenly distributed at the bottom and sides of the box, and a wind tunnel is provided to keep the temperature in the box uniform. The temperature sensor 13 is located at the diagonal position at the rear middle of the box. The temperature sensor and the heating device are both connected to the temperature converter, and finally connected to the temperature control panel. The temperature control panel can set the drying temperature and time in the box.

[0044] The temperature converter 16 is also connected to a semiconductor refrigeration device 37 arranged at the bottom of the box, which can realize the freeze-thaw cycle of the sample in conjunction with the drying system. It mainly includes a semiconductor refrigeration sheet (Peltier module), a cooling plate 35, and is connected to a temperature sensor and a temperature control switch to form a low-temperature freezing system, which can achieve temperature control from -30°C to 300°C, simulating dry and wet freeze-thaw cycles under different climatic conditions. In this way, the temperature control system can achieve both freezing and temperature-controlled thawing and drying.

[0045] The quality control system 40 is used to monitor the sample quality in real time and convert it into the sample moisture content to ensure that the dry-wet cycle proceeds smoothly.

[0046] The quality control system 40 includes a quality control panel 3, which is connected to the quality control converter 15 and six weighing devices 9 arranged at the bottom of the box body. A sample placement table 10 is provided on the weighing device 9, and a rotating device is added at the bottom of the sample placement table 10. The sample rotation speed is controlled by a servo motor to ensure the uniformity of heating and wetting of the sample.

[0047] The several components are assembled together into a quality control system. At the same time, the quality control converter 15 can convert the sample mass into the sample moisture content and present it on the quality control panel to monitor the sample mass and moisture content in real time.

[0048] The specific conversion formula is as follows:

[0049]

[0050] Where: m0 is the initial mass of the sample, which can be directly weighed by the weighing system of the device and recorded in the weighing control panel; w0 is the initial moisture content of the sample, which can be directly dried by the drying system of the device and recorded in the weighing device; m1 is the mass of the sample at a certain moment in the process of drying or wetting the sample; w1 is the calculated moisture content of the sample at the corresponding moment;

[0051] The quality control panel 3 can set the final mass or moisture content of the sample. When this mass or moisture content is reached, the drying or wetting process automatically stops. The final data presented by the quality control panel 3 are the initial mass and initial moisture content of the sample, and the mass and moisture content of the sample at a certain moment in the cycle;

[0052] The temperature control panel, humidity control panel and quality control panel are connected to each other. The quality control panel is the first priority and can control the drying or wetting stop. The three are controlled by the main switch at the same time.

[0053] Specific working process:

[0054] Take the example of drying the rock and soil samples first and then wetting them:

[0055] S1. Check the instrument, connect the power socket 34, turn on the main switch 4, the quality control panel switch 3, the humidity control panel switch 1 and the quality control panel switch 2, and connect the external water source 23, connect all external interfaces of the device, check whether the instrument is working properly, the yellow button on the quality control panel is the on button, and the red button is the off button;

[0056] S2, leveling, rotating the four leveling bolts 31 at the bottom of the box to make the dry-wet cycle experimental device in a horizontal state;

[0057] S3, rotate the door handle 5, open the door 7, wipe the front and back of the thermal insulation glass window 6, and ensure that the sample status can be observed in real time during the experiment;

[0058] S4. Record the initial mass and moisture content of the sample: Place the rock and soil sample on the sample placement table 10, close the box door 7, turn on the device main switch 4 and the quality control panel switch 3, record the mass of each sample and confirm the preservation. The moisture content of the sample can be manually input and saved, or it can be dried and recorded using the drying system;

[0059] S5. The quality control panel 3 is equipped with left and right buttons. The left button is for the previous sample, and the right button is for the next sample. The sample mass can be recorded by switching the left and right buttons. The quality control panel 3 is also equipped with 12 numeric keys. The initial moisture content of the sample can be entered through the numeric keys. Click the green button in the lower left corner to confirm, click the right button to switch to the next sample, and repeat recording the initial mass and moisture content of the sample.

[0060] S6. Use the device to test the moisture content of the sample. Set the drying temperature and time in the temperature control panel 2. Use the plus and minus keys to adjust the time and temperature. After setting, click the green button to confirm and save. After the sample is dried, you can check the initial moisture content of the sample through the quality control panel.

[0061] The above steps S4-S6 are the operation process of recording the initial mass and moisture content of the sample;

[0062] S7, turn on the temperature control panel switch 2, set the drying temperature and time, the temperature control amplitude of this device is -30 ~ 300.00 ℃, the time control amplitude is 0.00-168.00h, the plus key and minus key on the right side of the panel are used to control the time length and temperature, and click the green key to confirm and save after the setting is completed; the temperature command is transmitted to the heating device 11 through the temperature converter 16, and the heating device is placed in the heat preservation cavity at the bottom of the box, and a heat-proof and heat-insulating layer is provided around it. The heating device 11 starts to heat the heating pipe, and the box is evenly heated by the heating pipes 8 evenly laid around and at the bottom of the box. The heating method is electromagnetic induction heating, and the heating pipe is made of silver material, which has a fast heat transfer speed and small heat loss;

[0063] S8, the temperature inside the box is tested by the temperature sensor 13, which is located at the diagonal position of the middle rear part of the box. The temperature test result will be returned to the temperature control panel 2 through the temperature converter and compared with the temperature setting conditions until the temperature inside the box reaches the set value, and the temperature inside the box is kept unchanged;

[0064] The sample starts to dry, the sample mass and moisture content decrease, the mass converter converts the sample mass into the corresponding sample moisture content, the real-time mass and moisture content of the sample will be displayed in the mass control panel 3, and it can be manually controlled to stop when the corresponding mass or moisture content is reached;

[0065] When heated, the volume of air in the box expands. To solve this problem, an exhaust hole is provided on the top of the box to remove excess air in the box and relieve the pressure in the box.

[0066] S9, the above operation is manually controlled to stop, and can also be automatically controlled to stop by the device: set the stop parameters in the quality control panel 3, which can be controlled by setting the mass or moisture content of the sample at the end of drying, and then dry it through steps S1-S4. During drying, the mass or moisture content of the sample will be transmitted to the mass converter 15, and then returned to the quality control panel 3 for comparison. The comparison success signal will be transmitted to the temperature control panel 2, and the temperature control panel 2 will stop after receiving the signal; after the comparison fails, the real-time comparison will continue until the comparison is successful;

[0067] S10. Control the semiconductor refrigeration device to open according to the need and cooperate with the drying system to realize the freeze-thaw cycle of the sample, realize the temperature range control from -30°C to 300°C, and simulate the dry and wet freeze-thaw cycle under different climatic conditions. In this way, the temperature control system can realize both freezing and temperature-controlled thawing and drying;

[0068] S11, drying operation is completed, and wetting operation is performed. First, the external water supply device 23 is connected, and liquid water can be added to the water storage tank 17 through the water supply pipeline;

[0069] Turn on the humidity control panel 1 switch, set the humidity and time in the box. The humidity in the box is the concentration of atomized water, ranging from 0.01-1.00, and the time range is 0.00-168.00h. Use the plus and minus keys on the right side of the panel to adjust the time and temperature. After setting, click the green key to confirm and save; the setting will be transmitted to the humidity converter 24, and the liquid water will be transported to the atomizing device 18 through the water pipeline. The atomizing device 18 pressurizes the liquid water into atomized water, and the atomized water is sprayed into the box through the atomizing nozzle 19. The air blowing device 20 and the fan 21 work at the same time to make the atomized water evenly fill the box, thereby moistening the sample;

[0070] The humidity in the box is tested by the humidity sensor 25, which is set at the two top corners at the rear of the top of the box. The collected humidity information in the box is finally returned to the humidity control panel 1 for comparison until the temperature in the box reaches the set value;

[0071] The atomized water in the box will liquefy, and a drainage groove 28 is provided in the box. The liquefied water will flow out of the box through the drainage groove 28, the drainage hole 29 and the drainage pipe 27, and the external collection device;

[0072] The sample starts to get wet, and the sample mass and moisture content increase. The real-time moisture content of the sample is obtained by converting the real-time mass of the sample and is finally displayed in the mass control panel 3. When the corresponding mass or moisture content is reached, manual stop can be selected;

[0073] S12, the fully automatic operation steps of the wetting process are: set the mass or moisture content of the sample in the final state in the quality control panel, and perform the wetting operation according to step S11. When wetting, the mass or moisture content of the sample will be transmitted to the mass converter 15, and then returned to the quality control panel 3 for comparison. The comparison success signal will be transmitted to the humidity control panel 1, and the humidity control panel 1 will stop after receiving the signal; if the comparison fails, the real-time comparison will continue until the comparison is successful.

[0074] No matter how the dry-wet cycle path changes, the basic operation can be performed according to the above steps S7-S9 for drying operation and according to steps S11-S12 for wetting operation.

[0075] It should be noted that although the present invention is described by the above embodiments, the present invention may also have other various embodiments. Without departing from the spirit and scope of the present invention, it is obvious that those skilled in the art may make various corresponding changes and deformations to the present invention, but these changes and deformations should all fall within the scope of protection of the appended claims of the present invention and their equivalents.

Claims

1. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples, characterized by: It comprises a box structure that provides a closed environment, wherein a humidity control system (38), a temperature control system (39), and a quality control system (40) are arranged in the box (32); The humidity control system (38) is used to control the concentration of water mist in the box to wet the sample and discharge the water; The temperature control system (39) is used to control the temperature in the box to achieve low-temperature freezing, high-temperature melting, and drying and dehumidification of the rock and soil samples; The quality control system (40) is used to monitor the sample quality in real time and convert it into the sample moisture content to ensure that the dry-wet cycle proceeds smoothly.

2. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 1, characterized in that: The box structure is composed of a box (32), a heat-insulating cavity (33) between the inner and outer walls of the box, a heat-insulating layer (12), leveling bolts (31) located at the corners of the outer bottom of the box, an exhaust hole (26) at the center of the top of the box, a socket (34), and a main switch (4) of the device, wherein the thickness of the bottom heat-insulating layer is thicker than that of the side heat-insulating layer.

3. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 1 or 2, characterized in that: A heat-insulating glass window (6) is provided on a box door (7) disposed outside the box structure, and a wind tunnel (30) for ventilation is provided on the inner wall of the box.

4. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 1, characterized in that: The humidity control system (38) comprises a humidity control panel (1), the humidity control panel (1) being connected to a humidity converter (24) via a connecting line (14), and being connected to a water storage tank (17) arranged on the top of the box, an atomizing device (18), and an atomizing nozzle (19) connected to the atomizing device (18) via a water delivery pipeline (22), the water storage tank (17) being further connected to an external water source (23) located outside the box; The humidity converter (24) is also connected to a blower (20), a fan (21) connected to the blower (20), and a humidity sensor (25) to form a complete humidity control system for monitoring the humidity in the box.

5. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 4, characterized in that: A drainage groove (28) arranged along the periphery of the bottom of the box body is connected to the bottom of the box body. The drainage groove (28) is connected to a drainage pipe (27) located outside the box body through a drainage hole (29) so as to drain water. The drainage groove (28) has a slope of 2.5° and is oriented from the right rear to the left front.

6. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 1, characterized in that: The temperature control system (39) comprises a temperature control panel (2), the temperature control panel (2) is connected to a temperature converter (16), the temperature converter (16) is connected to a heating device (11) via a connecting line (14), the heating device (11) is arranged in the inner cavity at the bottom of the box, the spirally arranged heating tube (8) is heated by the heating device (11), so that the temperature in the box is increased, and the temperature control panel (2) is connected to a temperature sensor (13) to form a complete temperature control system to control the temperature in the box.

7. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 6, characterized in that: The heating tubes (8) are evenly distributed at the bottom and sides of the box, and the temperature sensor (13) is arranged at the rear diagonal position in the middle of the box.

8. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 6, characterized in that: The temperature converter (16) is also connected to a semiconductor refrigeration device (37) arranged at the bottom of the box body. The semiconductor refrigeration device (37) includes a semiconductor refrigeration sheet and a cooling plate (35), and is connected to a temperature sensor (13) and a temperature control switch on a temperature control panel (2) to form a low-temperature freezing system.

9. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 1, characterized in that: The quality control system (40) comprises a quality control panel (3), which is connected to a quality control converter (15) and a plurality of weighing devices (9) arranged at the bottom of the inner cavity of the box body, and a sample placement table (10) is arranged on the weighing device (9), which are assembled together to form a quality control system. At the same time, the quality control converter (15) can convert the sample mass into the sample moisture content, and monitor the sample mass and moisture content in real time.

10. A dry-wet freeze-thaw cycle test device suitable for rock and soil samples according to claim 9, characterized in that: A rotating device (36) is added at the bottom of the sample placement table (10), and the sample rotation speed is controlled by a servo motor.

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