Concrete experimental device for simulating carbonization and chlorine salt coupling erosion in marine environment

Abstract

The invention provides a concrete experimental device for simulating carbonization and chlorine salt coupling erosion in a marine environment, and relates to the field of concrete durability test boxes, the device comprises a carbonization test box and an intelligent salt mist simulation bin, a refrigeration mechanism, a heating mechanism, an air intake and exhaust mechanism, a humidity control mechanism, a temperature sensor, a humidity sensor, an ultraviolet irradiation mechanism, a storage rack and a carbon dioxide concentration sensor are arranged in the carbonization test box; the refrigeration mechanism, the heating mechanism, the air inlet and exhaust mechanism, the temperature sensor, the humidity control mechanism, the humidity sensor and the carbon dioxide concentration sensor are all connected with the industrial personal computer. The device can be used for solving the problem that environment temperature, humidity, pressure intensity, ocean flowing water scouring and ultraviolet rays are neglected when a concrete durability test under the action of carbonization and chlorine salt coupling erosion in a simulated ocean environment in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of concrete durability test chambers, and in particular to a concrete experimental device for simulating carbonation and chloride salt coupling erosion in a marine environment. Background Art

[0002] In the marine environment, concrete structures are exposed to extremely complex environments. As a porous material, concrete faces the test of climate change such as temperature, humidity, and carbon dioxide in the air, and also faces chloride ion erosion from the ocean. Changes in temperature and humidity are inevitable environmental factors. These changes are usually the most direct cause of concrete erosion, and changes in temperature and humidity will also change the degree of erosion of concrete by other factors; at the same time, carbon dioxide in the air will invade concrete, causing concrete carbonization, reducing the alkalinity inside the concrete, and changing the pore structure; in addition, due to the nature of seawater itself, its aqueous solution contains a large amount of chloride ions. After these chloride ions come into contact with the concrete engineering structure, they are easily transmitted to deeper layers through the internal pores of the concrete, causing the internal steel bars of the concrete to rust and expand, and the concrete to crack, which damages the durability of the concrete structure.

[0003] It can be seen that reinforced concrete structures in marine environments are affected by many factors, and the dual corrosion of carbonation and chloride salts often has a greater impact on the durability of reinforced concrete structures. As the concrete is used for a longer time, this problem becomes more and more prominent. Especially in coastal areas at home and abroad, the corrosion of reinforced concrete structures is particularly prominent. Carbon dioxide and ion corrosion significantly reduce the anti-penetration and anti-corrosion properties of concrete. Relevant scholars and experts at home and abroad have also conducted a lot of research, but most of them only consider carbonation or only consider the corrosion of chloride salts on concrete. To find the root cause fundamentally, it is necessary to study the general laws and deterioration behaviors under the dual corrosion of carbonation and chloride salts.

[0004] However, current scientific research methods cannot truly restore the marine environment. Therefore, in order to better and more conveniently study the corrosion behavior and mechanism of marine concrete, it is urgently necessary to design an experimental device that can simulate the marine environment to facilitate the observation of the corrosion of concrete samples. Summary of the invention

[0005] In view of the above-mentioned technical problems, the present invention proposes a concrete experimental device for simulating carbonation and chloride salt coupled corrosion in a marine environment, which is used to simulate the real marine environment indoors, conduct sampling, and observe and monitor the corrosion of the samples in real time, thereby providing an experimental basis and theoretical basis for marine corrosion protection.

[0006] The technical solution adopted by the present invention is: a concrete experimental device for simulating carbonation and chloride salt coupled erosion in a marine environment under limited visual feature conditions, the device comprising:

[0007] Box,

[0008] The observable transparent sealed hatch is rotatably connected to the box.

[0009] An intelligent salt spray simulation chamber is installed inside the box.

[0010] Furthermore, a high-definition touch screen display is arranged on the front plate of the box, and a switch button and an emergency stop button are arranged below the high-definition touch screen display; a movable pulley is arranged below the bottom plate of the box.

[0011] Furthermore, two partitions are arranged in parallel inside the box near the high-definition touch screen display. The upper partition is provided with an exhaust module, an air compressor and a high-performance computer, the lower partition is provided with a remote control module and a large-capacity storage module, and a refrigerator, a heater and a water storage tank are placed on the bottom plate of the box below the lower partition.

[0012] Furthermore, the exhaust module is connected to the air compressor, and an exhaust fan matching the exhaust module is arranged on the back plate of the box.

[0013] Furthermore, a pipeline and a compressor connected to the pipeline are arranged outside the side plate of the box body, the output end of the pipeline is connected to the intelligent salt spray simulation chamber, and the pipeline is used to transport the sodium chloride liquid compressed by the compressor to the intelligent salt spray simulation chamber.

[0014] Furthermore, a plurality of pull-out movable chassis are arranged in parallel on the other side of the box body near the observable transparent sealed cabin door, and an intelligent salt spray simulation chamber is arranged above the pull-out movable chassis.

[0015] Furthermore, the intelligent salt spray simulation chamber is a hollow rectangular structure, and an ultraviolet radiation simulator, a high-precision temperature sensor, a high-precision humidity sensor, an intelligent salt spray nozzle and a carbon dioxide concentration detection sensor are arranged on the outer side surface of the bottom.

[0016] Furthermore, 9 intelligent salt mist nozzles are evenly distributed, and the intelligent salt mist nozzles include a spherical universal device, a nozzle assembly and an upper adapter device.

[0017] Furthermore, the high-definition touch screen display is connected to a high-performance computer, the other end of the high-performance computer is respectively connected to a remote control module and a large-capacity storage module, and the other end of the remote control module is respectively connected to a high-performance computer, a refrigerator, a heater, an ultraviolet radiation simulator, a high-precision temperature sensor, a high-precision humidity sensor, an intelligent salt spray nozzle and a carbon dioxide concentration detection sensor.

[0018] Therefore, compared with the prior art, the present invention has the following beneficial effects:

[0019] First, the present invention provides researchers with a high-definition visual interface through a high-definition touch screen display, which facilitates human-computer interaction and enables researchers to flexibly set and adjust the above-mentioned environmental parameters on the touch screen interface according to their own experimental design requirements, thereby achieving accurate simulation and control of experimental conditions.

[0020] Second, the present invention is equipped with a large-capacity storage module, which can provide sufficient storage space for the large amount of data generated during the experiment, so as to record the real-time monitoring values ​​of environmental parameters, the performance change records of concrete samples, etc. Through the efficient data storage and management mechanism, researchers can easily access these valuable data, and then further explore the durability of concrete in complex marine environments and its influencing factors.

[0021] Third, the present invention sets up an intelligent salt spray simulation chamber, integrates a variety of precision sensors on it, and collaboratively controls through a remote control module and a computing module of a high-performance computer, so as to monitor and regulate parameters such as temperature, humidity, ultraviolet radiation intensity, and carbon dioxide concentration in the experimental box, thereby ensuring accurate simulation and stable control of the experimental environment, thereby enabling experimenters to simulate and reproduce complex corrosion conditions in the marine environment with unprecedented flexibility and accuracy, including salt spray corrosion effects, temperature and humidity fluctuations, ultraviolet radiation influences, and changes in carbon dioxide concentrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a module structure diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the test device proposed by the present invention.

[0024] Figure 3 It is a front view of the test device proposed by the present invention.

[0025] Figure 4 It is a rear view of the test device proposed by the present invention.

[0026] Figure 5 It is a left side view of the test device mentioned in the present invention.

[0027] Figure 6 This is a diagram of the internal structure of the test device proposed by the present invention.

[0028] Figure 7 The figure is a bottom view of the intelligent salt spray simulation chamber in the test device provided by the present invention.

[0029] Figure 8a-8b This is the structural diagram of the intelligent salt spray nozzle in the intelligent salt spray simulation chamber.

[0030] In the figure: 1-high-definition touch screen display, 2-switch button, 3-emergency stop button, 4-movable pulley, 5-observable transparent sealed cabin door, 6-rotating shaft, 7-exhaust fan, 8-pipeline, 9-compressor, 10-high-performance computer, 11-exhaust module, 12-air compressor, 13-remote control module, 14-refrigeration machine, 15-heating machine, 16-water storage tank, 17-large-capacity storage module, 18-intelligent salt spray simulation chamber, 18-1 ultraviolet radiation simulator, 18-2 high-precision temperature sensor, 18-3 high-precision humidity sensor, 18-4 intelligent salt spray nozzle, 18-4-1 spherical universal device, 18-4-2 nozzle device, 18-4-3 upper adapter device, 18-5 carbon dioxide concentration detection sensor, 19-pull-out movable chassis, 20-box. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art will make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

[0032] Example 1

[0033] like Figure 2-Figure 6 As shown, the present invention discloses a concrete experimental device specially designed for simulating carbonation and chloride salt coupling corrosion in a marine environment, including a box body 20, an observable transparent sealed cabin door 5, and an intelligent salt spray simulation chamber 18 arranged inside the box body 20.

[0034] The observable transparent sealed hatch 5 is rotatably connected to one side of the box body through a rotating shaft 6; a high-definition touch screen display 1 is arranged on the front of the box body, a switch button 2 and an emergency stop button 3 are arranged below the high-definition touch screen display 1, and a movable pulley 4 is arranged at the bottom of the box body; wherein:

[0035] The high-definition touch screen display 1 has a touch operation function, which is convenient for researchers to input the target environmental parameters of the experiment on the touch screen, and can display the current environmental parameter values ​​inside the test box in real time on the screen, wherein the environmental parameters include temperature, humidity, carbon dioxide concentration, ultraviolet radiation intensity and salt spray concentration, wherein the salt spray concentration value is the urban humidity information obtained in real time according to the coastal urban areas set by the experimenters, thereby providing researchers with comprehensive and accurate test data. Through the touch screen, researchers can easily view, record and analyze these data, and thus have a deeper understanding of the durability of concrete in the simulated marine environment;

[0036] The observable transparent sealed door 5 is made of high-strength transparent material, which can not only ensure the closedness of the test box, but also because of its transparency, researchers can intuitively observe the surface morphology changes of the concrete sample without opening the box, thereby avoiding environmental parameter fluctuations caused by frequent opening of the box and greatly improving the safety and accuracy of the experiment.

[0037] The switch button 2 is used to physically switch the test box on and off, ensuring that when the high-definition touch screen display 1 fails unexpectedly, the researchers can still normally control the switch state of the test box; the emergency stop button 3 is used as a safety guarantee in an emergency. Once the high-definition touch screen display 1 fails or other emergency situations occur, the researchers can quickly press the emergency stop button to immediately suspend the experiment to prevent potential dangers;

[0038] The movable pulley 4 is used by researchers to move the experimental box according to experimental requirements and adjust the position of the experimental box;

[0039] Furthermore, the interior of the box 20 is divided into two left and right chambers by a partition. Two partitions are arranged in parallel in the chamber near the high-definition touch screen display 1. An exhaust module 11, an air compressor 12 and a high-performance computer 10 are placed on the upper partition, and a remote control module 13 and a large-capacity storage module 14 are placed on the lower partition; a refrigerator 14, a heater 15 and a water storage tank 16 are placed on the bottom plate of the box below the lower partition; a plurality of parallel pull-out movable chassis 19 are installed in the chamber on the other side near the observable transparent sealed door 5, and the pull-out movable chassis 19 is slidably arranged inside the box 20; an intelligent salt spray simulation chamber 18 is arranged above the pull-out movable chassis 19; the air compressor 12 is connected to the exhaust module 11, and the air compressor 12 is used to compress the gas in the box 20 and discharge it to the outside of the box through the exhaust module 11; the water storage tank 16 is used to store and supply the water required for the experiment;

[0040] Furthermore, a pipe 8 and a compressor 9 are provided on a side plate of the box body 20 close to the exhaust module 11, the water storage tank 16 is connected to the compressor 9 through an internal pipe, and sodium chloride liquid is stored in the compressor 9. When the compressor 9 is working, the sodium chloride liquid and the water in the water storage tank 16 are mixed and sent to the intelligent salt spray simulation chamber 18 through the pipe 8; the intelligent salt spray simulation chamber 18 is a hollow rectangular parallelepiped structure, and the liquid input through the pipe 8 is stored in the cavity thereof. The sodium chloride liquid in the intelligent salt spray simulation chamber 18 will be converted into salt spray simulating the marine environment, thereby continuously corroding the concrete sample inside the test chamber;

[0041] Furthermore, the back plate of the box 20 is provided with an exhaust fan 7 that cooperates with the exhaust module 11. When the exhaust module 11 is working, the gas in the test box can be discharged through the exhaust fan 7 to effectively balance the pressure difference inside and outside the test box and adjust the carbon dioxide concentration in the box (combined with Figure 1 ) to ensure the stability and controllability of the experimental environment;

[0042] Combination Figure 7 The bottom of the intelligent salt spray simulation chamber 18 is provided with an ultraviolet radiation simulator 18-1, a high-precision temperature sensor 18-2, a high-precision humidity sensor 18-3, an intelligent salt spray nozzle 18-4, and a carbon dioxide concentration detection sensor 18-5. The intelligent salt spray nozzle 18-4 is connected with the internal space of the intelligent salt spray simulation chamber 18, and is used to evenly spray the sodium chloride liquid stored in the cavity of the intelligent salt spray simulation chamber 18; by monitoring and adjusting key parameters such as temperature, humidity, ultraviolet radiation intensity and carbon dioxide concentration in the experimental device, the experimenter can more flexibly simulate and reproduce the complex erosion conditions in the marine environment, so as to more accurately evaluate the durability of concrete materials under the coupled erosion of carbonization and chloride salts; wherein:

[0043] The ultraviolet radiation simulator 18-1 is used to provide uniform ultraviolet radiation, thereby simulating the radiation effect of solar ultraviolet rays on concrete, further accelerating the aging process of concrete, and more accurately evaluating the durability of concrete in a marine environment; the ultraviolet radiation simulator 18-1 is a UV Test Chamber (Suga), model UV-340;

[0044] The high-precision temperature sensor 18-2 is used to monitor the temperature change in the experimental box in real time and feed the data back to the remote control module 13 so as to timely control the operation of the heating machine 15 or the refrigerator 14 to ensure that the temperature of the experimental environment is always kept within the preset range; the high-precision temperature sensor 18-2 is a precision digital temperature sensor, model TMP36;

[0045] The high-precision humidity sensor 18-3 is used to monitor the humidity changes in the experimental box in real time and feed back the data to the remote control module 13, so that the remote control module 13 can control the steam humidifier and condensing dehumidifier in the intelligent salt spray simulation chamber 18 to ensure that the humidity of the experimental environment meets the experimental requirements; the high-precision humidity sensor 18-3 is a digital temperature and humidity sensor, model SHT35 (Sensirion);

[0046] There are 9 intelligent salt spray nozzles 18-4 evenly arranged at the bottom of the intelligent salt spray simulation chamber 18, which are used to accurately control the spray amount and distribution of the salt spray, so that the samples inside the entire test chamber can be evenly subjected to salt spray erosion;

[0047] The carbon dioxide concentration detection sensor 18-5 is used to monitor the carbon dioxide concentration in the experimental box in real time and adjust the carbon dioxide concentration in the box, and feed back the data to the remote control module 13, so that the remote control module 13 controls the carbon dioxide concentration detection sensor 18-5 to adjust the carbon dioxide concentration, and then the air compressor 12 works to exhaust the excess gas in the box 20 through the exhaust module 11 and the exhaust fan 7 to ensure that the carbon dioxide concentration in the experimental environment meets the preset conditions; the carbon dioxide concentration detection sensor 18-5 is an NDIR CO2 sensor, model Senseair S8;

[0048] The high-definition touch screen display 1 is connected to the high-performance computer 10. The researchers send parameter adjustment instructions to the high-performance computer 10 through touch screen operation. The high-performance computer 10 sends the adjustment instructions to the remote control module 13 after analysis and calculation; the large-capacity storage module 17 is a large-capacity solid-state hard disk, which has a built-in control program for accurately adjusting key environmental variables such as temperature, humidity, carbon dioxide concentration, ultraviolet radiation intensity and salt spray concentration in the experimental cabin, and can store a large amount of data generated during the experiment, including but not limited to real-time monitoring values ​​of environmental parameters, performance change records of concrete specimens, etc.; the high-performance computer 10 is respectively connected to the high-definition touch screen display 1, the large-capacity storage module 17, and the remote control module 13. The high-performance computer 10 receives the touch screen operation instructions of the high-definition touch screen display 1, and calls the control program in the large-capacity storage module 14 for analysis and calculation, and then sends the adjustment instructions to the remote control module 13; the remote control module The block 13 is respectively connected to the compressor 9, the high-performance computer 10, the air compressor 12, the refrigerator 14, the heater 15, the ultraviolet radiation simulator 18-1, the high-precision temperature sensor 18-2, the high-precision humidity sensor 18-3, the intelligent salt spray nozzle 18-4 and the carbon dioxide concentration detection sensor 18-5. The remote control module 13 is used to receive the parameter adjustment instruction sent by the high-performance computer 10, and control the compressor 9, the air compressor 12, the refrigerator 14, the heater 15, the ultraviolet radiation simulator 18-1, and the intelligent salt spray nozzle 18-4 to work, so as to adjust different parameters, and obtain the ultraviolet radiation intensity, temperature, humidity, and carbon dioxide concentration information currently collected by different sensors, and return it to the high-performance computer 10. The high-performance computer 10 calls the control program to determine whether the parameter adjustment is completed. If so, the result is fed back to the high-definition touch screen display 1 for display. If not, the parameter adjustment instruction is resent to adjust the parameters;

[0049] The above control program includes the following program 1 and program 2:

[0050]

[0051]

[0052]

[0053]

[0054]

[0055] As shown in algorithm program 2, the intelligent salt spray nozzle spraying direction control method includes the following steps:

[0056] Step 1: Define the function to calculate the control parameters

[0057] Create a function called calculate_control_parameters to calculate the control parameters of each sprinkler based on the sensor data;

[0058] The control status and direction of several nozzles are hard-coded in the calculate_control_parameters function:

[0059] 1) nozzle_1: state is open (state: True), direction is upward (direction: "up"),

[0060] 2) nozzle_2: state is closed (state: False), direction is left (direction: "left"),

[0061] 3) nozzle_9: state is open (state:True), direction is right (direction:"right"),

[0062] The control parameters of other nozzles will be supplemented or modified according to the actual configuration parameters in actual application;.

[0063] The calculate_control_parameters function finally returns a dictionary, each key in the dictionary is the number of the nozzle (such as nozzle_1), and each value is a dictionary containing the nozzle status and direction;

[0064] Step 2: Define the main loop function

[0065] Create a function named main, which simulates the operation process of the system. In the main function, the while True loop is used to continuously execute operations, which means that the system will continuously perform nozzle control operations.

[0066] Step 3: Reading Sensor Data

[0067] In each loop of while True, call the read_sensor_data() function to read the sensor data;

[0068] Step 4: Calculate control parameters

[0069] Using the sensor data as input, call the calculate_control_parameters function to calculate the control parameters of the sprinkler;

[0070] Step 5: Control the sprinkler

[0071] Traverse the calculated control parameter dictionary (i.e. the control parameters of each nozzle), call the control_spray_nozzle function for each nozzle, and pass the nozzle number, state (on or off) and direction as parameters. Use the control_spray_nozzle function to control the actual behavior of the nozzle and operate each nozzle;

[0072] Step 6: Wait for a while before the next cycle

[0073] At the end of each loop, call time.sleep(5) to pause the system for 5 seconds, simulating an update interval of every 5 seconds;

[0074] Step 7: Run the main loop

[0075] Use the if__name__ == "__main__": judgment statement to ensure that when the script is directly executed, the main() function is called to start the main loop and begin the task of nozzle control.

[0076] When the present embodiment is in use, the researchers first prepare a concrete sample, then open the visual transparent sealed hatch 5, pull out the pull-out movable chassis 19, and place the concrete sample on the pull-out movable chassis 19; then, close the visual transparent sealed hatch 5, and check the temperature, humidity, carbon dioxide concentration, ultraviolet radiation intensity and salt spray concentration in the current experimental device box on the high-definition touch screen display 1. When it is observed that the temperature in the box is too low or too high, the temperature is increased or decreased through touch screen operation on the high-definition touch screen display 1. At this time, the remote control module 13 sends a control instruction to the heating machine 15 or the refrigerator 14 to adjust the temperature in the box 1 until the preset temperature is reached; when the high-precision humidity sensor 18-3 detects that the humidity is too low or too high, the humidity is adjusted by controlling the steam humidifier and condensing dehumidifier built into the intelligent salt spray simulation chamber 18 to adjust the humidity in the box. The steam humidifier and condensing dehumidifier are arranged in the internal cavity of the intelligent salt spray simulation chamber 18; when the carbon dioxide concentration is too high, the humidity in the box is adjusted by controlling the steam humidifier and condensing dehumidifier built into the intelligent salt spray simulation chamber 18 to adjust the humidity in the box. When the carbon concentration is too low or too high, the high-definition touch screen display 1 increases or decreases the carbon dioxide concentration value through touch screen operation, and the remote control module 13 sends a control instruction to the carbon dioxide concentration detection sensor 18-5, and adjusts the current carbon dioxide concentration in the box through the sensor; when the ultraviolet radiation intensity is too low or too high, the high-definition touch screen display 1 increases or decreases the radiation intensity value through touch screen operation, and the remote control module 13 sends a control instruction to the ultraviolet irradiation simulator 18-1 to adjust the current ultraviolet irradiation intensity; when the salt spray concentration is too low or too high, the high-definition touch screen display 1 increases or decreases the salt spray concentration value through touch screen operation, and the remote control module 13 sends a control instruction to the intelligent salt spray nozzle 18-4 to adjust the amount of salt spray sprayed by the intelligent salt spray nozzle; finally, when all the key parameters in the box reach the preset values ​​of the experiment, the surface morphology changes of the concrete sample are observed through the visualized transparent sealed cabin 5 and the current parameter values ​​are recorded.

[0077] Example 2

[0078] Based on Example 1, this embodiment improves the intelligent salt spray nozzle 18-4 to ensure that the nozzle can spray salt spray more evenly and ensure that the concrete sample is evenly corroded. At the same time, the nozzle can also adjust the angle and spray amount according to the experimental requirements to meet the requirements under different experimental conditions.

[0079] Combination Figure 8a-8bThe intelligent salt spray nozzle 18-4 includes a spherical universal device 18-4-1, a nozzle 18-4-2 and an upper transfer rod 18-4-3. The top of the spherical universal device 18-4-1 is connected to the bottom of the intelligent salt spray bin 18, and the upper transfer rod 18-4-3 is rotatably connected to the inside of the spherical universal device 18-4-1. The nozzle 18-4-2 is installed at the bottom of the upper transfer rod 18-4-3 by bolts; a signal receiver for receiving control instructions is provided in the upper transfer rod 18-4-3 of each intelligent salt spray nozzle 18-4. When receiving the control signal of the remote control module 13, it can rotate in the spherical universal device 18-4-1, thereby adjusting the angle of the nozzle 18-4-2;

[0080] When this embodiment is in use, the overall operation steps are the same as those of Example 1, except that the experimenter inputs the target city of the experiment on the high-definition touch screen display 1 according to the experimental requirements and obtains the real-time data of the target city through the control program, and the high-definition touch screen display 1 sends the data to the high-performance computer 10, and the high-performance computer 10 calls the control program in the large-capacity storage module 17 to calculate and analyze the salt spray concentration to be set, and sends the control instruction of the intelligent salt spray nozzle to the remote control module 13, and the remote control module 13 sends the control instruction to the receiver of the corresponding intelligent salt spray nozzle 18-4, thereby controlling the upper transfer rod 18-4-3 of different numbers of intelligent salt spray nozzles 18-4 to rotate in the spherical universal device 18-4-1, thereby driving the rotation of the nozzle 18-4-2, thereby realizing all-round spraying, and controlling the salt spray concentration by controlling the number of spraying intelligent salt spray nozzles 18-4.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A concrete experimental device simulating carbonation and chloride salt coupled erosion in marine environment, characterized in that: include: Box (20), an observable transparent sealed hatch (5) rotatably connected to the box body (20), An intelligent salt spray simulation chamber (18) is arranged inside the box (20).

2. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 1, characterized in that: A high-definition touch screen display (1) is arranged on the front plate of the box body (20), a movable pulley (4) is arranged below the bottom plate, and a switch button (2) and an emergency stop button (3) are arranged below the high-definition touch screen display (1).

3. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 2, characterized in that: The interior of the box (20) is divided into two left and right chambers by a baffle. Two partitions are arranged in parallel in the chamber on one side close to the high-definition touch screen display (1). An exhaust module (11), an air compressor (12) and a high-performance computer (10) are arranged on the upper partition. A remote control module (13) and a large-capacity storage module (14) are arranged on the lower partition. A refrigerator (14), a heater (15) and a water storage tank (16) are placed on the bottom plate of the box (20) below the lower partition. An intelligent salt spray simulation chamber (18) is arranged on the top of the chamber on the other side.

4. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in a marine environment as claimed in claim 3, characterized in that: A plurality of pull-out movable chassis (19) are arranged in parallel below the intelligent salt spray simulation chamber (18), and the pull-out movable chassis (19) are used to place prepared concrete samples.

5. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 4, characterized in that: A pipeline (8) and a compressor (9) storing sodium chloride liquid are arranged outside the side plate of the box body (20); one end of the compressor (9) is connected to the water storage tank (16) through an internal pipeline, and the other end is connected to the pipeline (8); the output end of the pipeline (8) is connected to the intelligent salt spray simulation chamber (18) for conveying sodium chloride liquid and water into the intelligent salt spray simulation chamber (18).

6. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 5, characterized in that: An exhaust fan (7) connected to the exhaust module (11) is arranged on the back plate of the box body (20), and the exhaust module (11) is connected to the air compressor (12).

7. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 5, characterized in that: The intelligent salt spray simulation chamber (18) is a hollow rectangular parallelepiped structure, and an ultraviolet radiation simulator (18-1), a high-precision temperature sensor (18-2), a high-precision humidity sensor (18-3), an intelligent salt spray nozzle (18-4) and a carbon dioxide concentration detection sensor (18-5) are arranged on the bottom surface thereof.

8. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 7, characterized in that: Nine intelligent salt spray nozzles (18-4) are evenly arranged, and each intelligent salt spray nozzle (18-4) comprises a spherical universal device (18-4-1), a nozzle (18-4-2) and an upper transfer rod (18-4-3), the spherical universal device (18-4-1) is connected to a bottom plate of an intelligent salt spray simulation chamber (18), the upper transfer rod (18-4-3) is rotatably connected to the inside of the spherical universal device (18-4-1) via a rotating shaft, and the nozzle (18-4-2) is mounted on the bottom of the upper transfer rod (18-4-3) via bolts.

9. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 3, characterized in that: The high-definition touch screen display (1) is connected to a high-performance computer (10), and the other end of the high-performance computer (10) is respectively connected to a remote control module (13) and a large-capacity storage module (17), wherein the large-capacity storage module (17) stores a control program for adjusting temperature, humidity, carbon dioxide concentration, ultraviolet radiation intensity, and salt fog concentration value, as well as experimental process data; the high-performance computer (10) is used to receive a touch screen operation instruction issued by the high-definition touch screen display (1), call the control program for analysis and calculation, and then send the control instruction to the remote control module (13); The remote control module (13) is respectively connected to the compressor (9), the high-performance computer (10), the refrigerator (14), the heater (15), the ultraviolet radiation simulator (18-1), the high-precision temperature sensor (18-2), the high-precision humidity sensor (18-3), the intelligent salt spray nozzle (18-4) and the carbon dioxide concentration detection sensor (18-5), and the remote control module (13) is used to control the compressor (9), the refrigerator (14), the heater (15), the ultraviolet radiation simulator (18-1), and the intelligent salt spray nozzle (18-4) to work according to the received control instructions, and to collect current ultraviolet radiation intensity, temperature, humidity, and carbon dioxide concentration information by using the ultraviolet radiation simulator (18-1), the high-precision temperature sensor (18-2), the high-precision humidity sensor (18-3), and the carbon dioxide concentration detection sensor (18-5).

10. The concrete experimental device for simulating carbonation and chloride salt coupled corrosion in marine environment as claimed in claim 8, characterized in that: The working principle of this test device is: First, the researchers send the target parameters to the high-performance computer (10) through the high-definition touch screen display (1). The high-performance computer (10) calls the control program in the large-capacity storage module (17) for calculation and analysis and then sends the adjustment instructions to the remote control module (13). Secondly, the remote control module (13) obtains the current adjustment instruction. If the current adjustment instruction is a temperature adjustment instruction, the remote control module (13) controls the refrigerator (14) or the heater (15) to increase or decrease the temperature in the box; if the current adjustment instruction is a humidity adjustment instruction, the remote control module (13) controls the steam humidifier or the condensing dehumidifier to increase or decrease the humidity in the box; if the current adjustment instruction is an ultraviolet radiation intensity adjustment instruction, the remote control module (13) controls the ultraviolet radiation simulator (18-1) to increase or decrease the ultraviolet radiation intensity; if the current adjustment instruction is a carbon dioxide concentration adjustment instruction, the remote control module (13) controls the carbon dioxide concentration detection sensor (18-5) to increase or decrease the carbon dioxide concentration in the box, and exhausts the excess gas in the box through the exhaust module (11) and the exhaust fan (7); if the current adjustment instruction is a salt spray concentration adjustment instruction, the remote control module (13) controls the compressor (9) to send sodium chloride liquid and water into the intelligent salt spray simulation chamber (18) to increase the salt spray concentration; Finally, the current ultraviolet radiation intensity, temperature, humidity, and carbon dioxide concentration values ​​are obtained through the ultraviolet radiation simulator (18-1), the high-precision temperature sensor (18-2), the high-precision humidity sensor (18-3), and the carbon dioxide concentration detection sensor (18-5) and returned to the high-performance computer (10). The high-performance computer (10) calls the control program to determine whether the parameter adjustment is completed. If so, the result is fed back to the high-definition touch screen display (1) for display. If not, the parameter adjustment instruction is resent to adjust the parameters.

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