Concrete durability environment simulation device and simulation method

Abstract

The application discloses a kind of concrete durability environment simulation device and simulation method, device includes room body, still including control test system and with control test system connection temperature control system, humidification system, gas control system, air conditioning system, rain system, salt fog system, illumination system and ultraviolet infrared lamp system, room body includes A room and B room, A room and B room are connected with temperature control system, humidification system, gas control system, air conditioning system, rain system, salt fog system, illumination system and ultraviolet infrared lamp system, the application can simulate the natural environment of temperature, humidity, rain, salt fog etc. that concrete is located simultaneously or respectively according to the environmental characteristics of different regions, and can adjust the intensity of different natural climate conditions according to the needs, so as to more accurately reflect the actual construction maintenance environment on site.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and in particular to a concrete durability environment simulation device and a simulation method. Background Art

[0002] Currently, accurately predicting the service life of concrete structures is a key research focus and challenge in civil engineering. The type and concentration of corrosive media, environmental conditions, and erosion patterns in natural environments directly influence the rate and extent of concrete structure durability degradation. Extensive research has been conducted on the durability of concrete structures both domestically and internationally, but most studies employ accelerated testing methods. These methods accelerate the durability degradation of concrete structures by increasing temperature, relative humidity, or the concentration of corrosive media, or by introducing factors not present in the field (such as electric current). However, these methods can lead to discrepancies between the mechanisms, processes, and outcomes of concrete durability degradation and actual conditions, making the research results difficult to apply in practical engineering projects. Indoor simulation testing combines the advantages of both real-world and accelerated testing methods, offering advantages such as authentic, reliable, rapid results, good simulation, reproducibility, and strong correlation. Indoor simulation testing of concrete can provide valuable insights into the mechanisms, processes, and outcomes of concrete durability degradation in real-world environments. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a concrete durability environment simulation device and a simulation method.

[0004] To solve the above technical problems, the present invention first discloses a concrete durability environmental simulation device, which includes a chamber body, a control and testing system, and a temperature control system, a humidification system, a gas control system, an air conditioning system, a rain shower system, a salt spray system, a lighting system, and an ultraviolet and infrared lamp system connected to the control and testing system. The chamber body includes chamber A and chamber B, and both chambers A and B are connected to the temperature control system, the humidification system, the gas control system, the air conditioning system, the rain shower system, the salt spray system, the lighting system, and the ultraviolet and infrared lamp system.

[0005] Furthermore, the chambers A and B adopt an assembled panel structure, the inner and outer walls of the chambers A and B are stainless steel plates, and the middle is filled with thermal insulation foam material. A door is provided on one side of the chambers A and B, and an observation window is provided on the door.

[0006] Furthermore, the temperature control system includes a refrigeration compressor and a titanium alloy electric heater, the humidification system includes a stainless steel armored humidifier, a water cut-off protector, an automatic water level controller and an automatic water filling system; the air conditioning system includes a centrifugal fan, and the air outlet of the centrifugal fan is connected to the chamber A and chamber B; the rain system includes a spray device and a nozzle connected to the spray device, and the nozzles of various different calibers are arranged on the top of the chamber A and chamber B; the lighting system and the ultraviolet infrared lamp system are arranged on the top of the chamber A and chamber B, and the ultraviolet infrared lamp system includes an ultraviolet lamp for testing the aging of polymer specimens and an infrared lamp for heating the environment.

[0007] Furthermore, the gas control system is configured to control the carbon dioxide concentration inside the environmental simulation device and to monitor the carbon dioxide concentration inside the environmental simulation box in real time to perform carbonization tests on concrete specimens.

[0008] Furthermore, it also includes a loading system for applying load to the concrete specimen, the loading system includes a loading device and a reaction frame for placing the concrete specimen, and the loading end of the loading device moves up and down relative to the reaction frame.

[0009] Furthermore, a chloride environment simulation device is detachably provided in Chamber A and Chamber B, and the chloride environment simulation device includes a chloride environment simulation box and a liquid storage tank. Chloride solution is stored in the liquid storage tank. A scale is provided on the side wall of the chloride environment simulation box. A water filling pipe and a drainage pipe connected to the liquid storage tank are provided at the bottom of the chloride environment simulation box. A water pump for filling and draining water is installed on the liquid storage tank. A water splash stirrer and a directional hair dryer for drying concrete specimens are installed in the chloride environment simulation box.

[0010] Furthermore, the chambers A and B are detachably provided with sulfate environment simulation devices, which include a sulfate environment simulation box, the bottom of which is loaded with sulfate solution, and a porous material layer for embedding the bottom of the concrete specimen is provided on the sulfate solution.

[0011] Then, the present invention discloses a method for simulating a concrete durability environment, comprising the concrete durability environment simulation device described in the above scheme, and comprising the following steps:

[0012] S1. When conducting a full immersion test in chloride salt, the test equipment is debugged and calibrated before the test begins. Three groups of concrete specimens are classified and numbered and then placed in the chloride salt solution environmental chamber. Sodium chloride solution is configured in the chamber and the relative humidity is not less than 90%. Among them, the first group is set up for a one-dimensional corrosion test. One or two opposing sides of the concrete specimens are kept, and the remaining surfaces of the concrete specimens are sealed with epoxy resin. The second group is set up for a two-dimensional corrosion test. Two adjacent sides of the concrete specimens are kept, and the remaining surfaces of the concrete specimens are sealed with epoxy resin. The third group is a blank comparison test and does not undergo any treatment.

[0013] S2. When conducting the dry-wet cycle test and salt spray test of chloride salt, the relative humidity of the dry-wet cycle test is 40-60% during the drying process, and not less than 95% during the spraying process. Every 72 hours is a test cycle, the spraying time is 1 hour, and the drying time is 71 hours. The relative humidity in the test chamber of the salt spray test is 50-70% during the drying process, and not less than 95% during the spraying process. The test cycle of the salt spray test is 24 hours, the spraying time is 21 hours, and the drying time is 3 hours at room temperature. The spraying process is carried out alternately in the form of spraying and intermittent. At the same time, the water splash stirrer and liquid storage tank are controlled to simulate the splash zone, tidal zone and tidal fluctuation of the marine environment, and corresponding loads are applied to the concrete specimens under the corresponding test conditions.

[0014] S3. After each test cycle, test the performance of the specimen and record the appearance and damage of the specimen.

[0015] S4. After the entire test sampling period is completed, the performance of the concrete specimens is tested according to the test plan.

[0016] Then, the present invention discloses a method for simulating a concrete durability environment, comprising the concrete durability environment simulation device described in the above scheme, and comprising the following steps:

[0017] S1. When conducting a sulfate erosion test, the test equipment was debugged and calibrated before the test began. Three groups of concrete specimens were classified and numbered and then placed in the sulfate solution environmental chamber. A sodium sulfate solution was configured in the chamber, and the lower portion of the concrete specimen was located within the porous material layer. Among them, the first group was a one-dimensional erosion test, in which one or two opposing sides of the specimen were retained, and the remaining specimen surfaces were sealed with epoxy resin; the first group was a two-dimensional erosion test, in which two adjacent sides of the specimen were retained, and the remaining specimen surfaces were sealed with epoxy resin. The third group served as a blank control and was not treated in any way.

[0018] S2. The sulfate corrosion test is for 30-90 days. After the test, the performance of the specimens is tested and the appearance, damage and deterioration of the concrete specimens are recorded. If the corrosion resistance coefficient of the concrete compressive strength is not greater than 75% or the erosion depth of the reinforced concrete specimen cross section reaches the thickness of the concrete protective layer, the test can be stopped early.

[0019] S3. After the entire test sampling period is completed, the performance of the concrete specimens is tested according to the test plan.

[0020] Then, the present invention discloses a method for simulating a concrete durability environment, comprising the concrete durability environment simulation device described in the above scheme, and comprising the following steps:

[0021] S1. In the environmental simulation device, a gas control system can be used to control the carbon dioxide concentration in the environmental simulation box to conduct a carbonation test on concrete. The carbon dioxide concentration is controlled at 0-30%, and the carbon dioxide concentration can be monitored in real time during the test. 1-3 days before the start of the test, the specimen is dried at 50-70°C for 46-52 hours. Parallel lines are drawn along the length of the concrete specimen at intervals of 8-12 mm as test points for the carbonation depth.

[0022] S2. Concrete specimens were sampled at 7d, 14d, 28d and 56d of carbonization.

[0023] S3. When the carbonization depth of the concrete reaches the set depth or the set test time is reached, the test stops.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. The present invention can simulate the natural environment of concrete in which temperature, humidity, rain, salt spray, etc. exist simultaneously or separately according to the different environmental characteristics of different regions, and can adjust the intensity of different natural climatic conditions as needed, so as to more accurately reflect the actual construction and maintenance environment on site.

[0026] 2. The concrete environment simulation device of the present invention is divided into two chambers, A and B, and the volumes of the two chambers are different. The salt spray and other gases are more easily distributed evenly in the chamber with a relatively smaller volume, and the chamber with a relatively larger volume can hold more concrete test blocks. In addition, the two chambers can be used for single variable comparative tests.

[0027] 3. The present invention is provided with a curing box that simulates the chloride and sulfate solution environments respectively, which can respectively simulate the chloride erosion conditions such as the tidal rise and fall zone, wave splash zone or tidal range zone of the marine environment, the carbonization of concrete in the atmospheric environment, and the "root rot phenomenon" of sulfate erosion concrete specimens. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional schematic diagram of a concrete durability environmental simulation box disclosed in a preferred embodiment of the present invention;

[0029] Figure 2 A top view of a concrete durability environmental simulation box disclosed in a preferred embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of a chloride salt environment simulation device disclosed in a preferred embodiment of the present invention;

[0031] Figure 4 A schematic structural diagram of a sulfate environment simulation device disclosed in a preferred embodiment of the present invention;

[0032] Figure 5 This is an operational flow chart disclosed in accordance with a preferred embodiment of the present invention.

[0033] Legend:

[0034] 1. Hinged door; 2. Lighting system; 3. Ultraviolet and infrared lamp system; 4. Shower system; 5. Air conditioning system; 6. Temperature control system; 7. Salt spray system; 8. Humidification system; 9. Gas control system; 10. Chloride environment simulation chamber; 11. Scale; 12. Water filling pipe; 13. Drain pipe; 14. Concrete specimen; 15. Splash stirrer; 16. Directional blower; 17. Liquid storage tank; 18. Chloride solution; 19. Sulfate environment simulation chamber; 20. Porous material layer; 21. Sulfate solution; 22. Load system; 23. Water pump; 24. Room A; 25. Room B. DETAILED DESCRIPTION

[0035] To facilitate understanding of the present invention, the present invention will be described in more comprehensive and detailed form below in conjunction with the accompanying drawings and preferred embodiments. However, the protection scope of the present invention is not limited to the following specific embodiments.

[0036] like Figure 1-5As shown, this embodiment discloses a concrete durability environmental simulation device, comprising a chamber, a control and testing system, and a temperature control system 6, a humidification system 8, a gas control system 9, an air conditioning system 5, a rain shower system 4, a salt spray system 7, a lighting system 2, and an ultraviolet and infrared lamp system 3 (including ultraviolet and infrared lamps) connected to the control and testing system. The chamber comprises chamber A 24 and chamber B 25, both of which are connected to the temperature control system 6, the humidification system 8, the gas control system 9, the air conditioning system 5, the rain shower system 4, the salt spray system 7, the lighting system 2, and the ultraviolet and infrared lamp system 3. The provision of chambers A and B allows for comparison of concrete specimens 14 with the same mix ratio under a single environmental variable to determine the change in concrete durability. Chamber B 25 is smaller in volume, and is more easily distributed in carbon dioxide and salt spray than chamber A 24. Chamber A 24 can accommodate more concrete specimens 14 than chamber B 25. Therefore, the environmental simulation device of the present invention can simulate the natural environment of concrete in which temperature, humidity, rain, salt spray, etc. exist simultaneously or separately according to the different environmental characteristics of different regions, and can adjust the intensity of different natural climatic conditions as required, so as to more accurately reflect the actual construction and maintenance environment on site.

[0037] In this embodiment, room A 24 and room B 25 adopt an assembled warehouse panel structure, the inner and outer walls of room A 24 and room B 25 are stainless steel plates, and the middle is filled with thermal insulation foam material. Room doors are provided on one side of room A 24 and room B 25, and the room doors adopt double-opening hinged doors 1. An observation window is provided on the room door, and the observation window is a glass structure.

[0038] In this embodiment, the temperature control system 6 includes a refrigeration compressor and a titanium alloy electric heater. The temperature can be adjusted within a certain range, and a target temperature curve for the environment chamber can be set on a computer, with the actual temperature time series recorded throughout. The humidification system 8 includes a stainless steel armored humidifier, a water shutoff protector, an automatic water level controller, and an automatic water filling system. The relative humidity within the environment chamber can be adjusted within a certain range, and a target humidity curve for the environment chamber can be set on a computer, with the actual humidity time series recorded throughout. The air conditioning system 5 includes a centrifugal fan, the outlet of which is connected to chamber A 24 and chamber B 25. The centrifugal fan is located at a slightly elevated position on the wall directly opposite the door. The fans installed in both chambers are of the same size, model, and performance, and are used to balance temperature and humidity control and evenly distribute gases such as salt spray within the chamber.

[0039] In this embodiment, the shower system 4 comprises a spray device and nozzles connected to it. Multiple nozzles of varying diameters are installed at the tops of chambers A 24 and B 25. Specifically, the shower system 4 is located at the top of the environmental chamber, facing vertically downward, and utilizes two rows of spray pipes. Two sets of nozzles with varying diameters are provided to accommodate varying rainfall intensities, and the nozzles are evenly spaced above the spray racks, eliminating dead zones. The illumination system 2 and the UV / IR lamp system 3 are installed at the tops of chambers A 24 and B 25. Specifically, the illumination system 2 is located at the four corners of the chamber, with two brackets evenly spaced along the longitudinal direction of the roof. The UV / IR lamp system 3 and shower system 4 are staggered, allowing them to operate simultaneously without interfering with each other. The UV lamps can be used to test the aging of polymer specimens, while the infrared lamps can be used to increase the temperature of the environment. Similarly, the UV / IR lamp system 3 uses monitoring system software to preset a target radiation intensity-time curve and records the actual radiation intensity throughout the entire process.

[0040] In this embodiment, the gas control system 9 can control the carbon dioxide concentration inside the environmental simulation device and can also monitor the carbon dioxide concentration inside the environmental simulation box in real time for performing carbonization tests on the concrete specimens 14 .

[0041] In this embodiment, in order to apply static load or fatigue load to the concrete specimen 14, a loading system 22 is also included. The loading system 22 includes a loading device and a reaction frame for placing the concrete specimen 14. The loading end of the loading device moves up and down relative to the reaction frame.

[0042] In this embodiment, a chlorine salt environment simulation device is detachably installed in chamber A 24 and chamber B 25. The chlorine salt environment simulation device includes a chlorine salt environment simulation box 10 and a liquid storage tank 17. The chlorine salt environment simulation box 10 can be used in conjunction with a salt spray system 7 to control the spraying mode and time interval of the salt spray system, thereby simulating the atmospheric zone of a seawater environment solution. The liquid storage tank 17 stores a chloride salt solution 18. The side wall of the chlorine salt environment simulation box 10 is provided with a scale 11. The bottom of the chlorine salt environment simulation box 10 is provided with a water filling pipe 12 and a drainage pipe 13 connected to the liquid storage tank 17. The water filling and drainage are controlled by a water pump 23 at the bottom of the liquid storage tank 17. The chlorine salt environment simulation box 10 is installed with a water splash stirrer 15 and a directional blower 16 for drying concrete specimens 14. By controlling the frequency and speed of the rotation of the water splash stirrer 15, the splash zone of the ocean environment is simulated.

[0043] In this embodiment, chamber A 24 and chamber B 25 are detachably provided with a sulfate environment simulation device, which includes a sulfate environment simulation box 19. The bottom of the sulfate environment simulation box 19 is loaded with a sulfate solution 21, and a porous material layer 20 for embedding the bottom of the concrete specimen 14 is provided on the sulfate solution 21. The porous material layer 20 is mainly soil, sand or sponge.

[0044] The present invention also discloses a concrete durability environment simulation method, including the concrete durability environment simulation device of the present application, comprising the following steps:

[0045] S1. When conducting a full immersion test of chloride salt, the test equipment is debugged and calibrated before the test begins. Three groups of concrete specimens 14 are classified and numbered, and then placed in an environmental chamber filled with a chloride salt solution 18. The chamber is provided with a sodium chloride solution with a mass concentration of 5% and a relative humidity of not less than 90%. The concrete specimens 14 are 100 mm × 100 mm × 400 mm in size. The first group is set up for a one-dimensional erosion test, in which one or two opposing sides of the concrete specimens 14 are kept, and the remaining surfaces of the concrete specimens 14 are sealed with epoxy resin. The second group is set up for a two-dimensional erosion test, in which two adjacent sides of the concrete specimens 14 are kept, and the remaining surfaces of the concrete specimens 14 are sealed with epoxy resin. The third group is a blank control test, and no treatment is performed.

[0046] S2. When conducting the dry-wet cycle test and salt spray test of chloride salts. The relative humidity of the dry-wet cycle test is 50% during the drying process and not less than 95% during the spraying process. Every 72 hours is a test cycle, the spraying time is 1 hour, and the drying time is 71 hours. The relative humidity in the test chamber of the salt spray test is 60% during the drying process and not less than 95% during the spraying process. The test cycle of the salt spray test is 24 hours, the spraying time is 21 hours, and the drying time is 3 hours at room temperature. The spraying process is carried out alternately in the form of 15 minutes of spraying and 15 minutes of intermittent. At the same time, the water splash stirrer 15 and the liquid storage tank 17 are controlled to simulate the splash zone, tidal zone and tidal fluctuation of the marine environment, and the corresponding load is applied to the concrete specimen 14 under the corresponding test conditions;

[0047] S3. After each test cycle, the performance of the concrete specimen 14 is tested, and the appearance and damage of the concrete specimen 14 are recorded;

[0048] S4. After the entire test sampling period, the performance of the concrete specimen 14 is tested according to the test plan;

[0049] The present invention also discloses a concrete durability environment simulation method, including the concrete durability environment simulation device of the present application, comprising the following steps:

[0050] S1. When conducting a sulfate erosion test, the test equipment was debugged and calibrated before the test began. Three groups of concrete specimens 14 were classified and numbered and placed in a sulfate solution environmental chamber. A sodium chloride solution with a mass concentration of 5% was configured in the chamber, and the lower portion of the concrete specimens 14 was located within the porous material layer 20, thereby simulating the "root rot phenomenon" in the lower portion of the concrete structure during sulfate erosion. The concrete specimens 14 had dimensions of 100 mm × 100 mm × 400 mm. The first group was a one-dimensional erosion test, in which one or two opposing sides of the concrete specimens 14 were maintained, and the remaining surfaces of the concrete specimens 14 were sealed with epoxy resin. The first group was a two-dimensional erosion test, in which two adjacent sides of the concrete specimens 14 were maintained, and the remaining surfaces of the concrete specimens 14 were sealed with epoxy resin. The third group served as a blank control and was not treated.

[0051] S2. The sulfate corrosion test lasts for 30-90 days, and the test time can also be set according to requirements. After the test, the performance of the concrete specimen 14 is tested, and the appearance, shape, damage and deterioration of the concrete specimen 14 are recorded. If the corrosion resistance coefficient of the concrete compressive strength is not greater than 75% or the erosion depth of the reinforced concrete specimen 14 cross section reaches the thickness of the concrete cover, the test can be stopped in advance;

[0052] S3. After the entire test sampling period is completed, the performance of the concrete specimen 14 is tested according to the test plan.

[0053] The present invention also discloses a concrete durability environment simulation method, including the concrete durability environment simulation device of the present application, comprising the following steps:

[0054] S1. This environmental simulation device can also be used to conduct concrete carbonation tests. The carbon dioxide concentration is controlled between 0% and 30%, with an allowable deviation of ±0.2%. The carbon dioxide concentration can be monitored in real time during the test. Two days before the test, the concrete specimen 14 is dried at 60°C for 48 hours. Parallel lines are drawn along the length of the concrete specimen 14 at 10mm intervals as test points for the carbonation depth.

[0055] S2. Samples of concrete specimens are taken after carbonization for 7 days, 14 days, 28 days, 56 days or after a set time. The operation process should be carried out in accordance with the relevant provisions of the Standard for Test Methods for Long-term Properties and Durability of Ordinary Concrete GB / T50082.

[0056] S3. When the carbonization depth of the concrete reaches the set depth or the set test time is reached, the test stops.

[0057] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A method for simulating concrete durability environment, characterized in that: The invention relates to a concrete durability environment simulation device, wherein the concrete durability environment simulation device comprises a chamber body, a control test system, and a temperature control system (6), a humidification system (8), a gas control system (9), an air conditioning system (5), a rain shower system (4), a salt spray system (7), an illumination system (2), and an ultraviolet infrared lamp system (3) connected to the control test system. The chamber body comprises a chamber A (24) and a chamber B (25), and both the chamber A (24) and the chamber B (25) are connected to the temperature control system (6), the humidification system (8), the gas control system (9), the air conditioning system (5), the rain shower system (4), the salt spray system (7), the illumination system (2), and the ultraviolet infrared lamp system (3); The concrete durability environment simulation device further includes a loading system (22) for applying a load to the concrete specimen, the loading system (22) including a loading device and a reaction frame for placing the concrete specimen (14), and a loading end of the loading device moves up and down relative to the reaction frame; The chamber A (24) and chamber B (25) are detachably provided with a sulfate environment simulation device, the sulfate environment simulation device comprising a sulfate environment simulation box (19), the bottom of the sulfate environment simulation box (19) being loaded with a sulfate solution (21), and a porous material layer (20) for embedding the bottom of the concrete specimen (14) being provided on the sulfate solution (21); The simulation method comprises the following steps: S1, when conducting a sulfate erosion test, the test equipment is debugged and calibrated before the test begins, and three groups of concrete specimens (14) are classified and numbered and then placed in the sulfate solution environment box (19), in which a sodium sulfate solution (21) is configured, and the lower part of the concrete specimen (14) is located in the porous material layer (20); wherein the first group is a one-dimensional erosion test, in which the specimen retains one or two opposite sides, and the remaining specimen surfaces are sealed with epoxy resin; the second group is a two-dimensional erosion test, in which the specimen retains one or two opposite sides, and the remaining specimen surfaces are sealed with epoxy resin; Two adjacent surfaces, the remaining specimen surfaces are sealed with epoxy resin, and the third group is a blank control without any treatment; S2, the sulfate corrosion test is 30-90 days. After the test, the specimen performance is tested and the appearance, shape, damage and deterioration of the concrete specimen (14) are recorded. If the corrosion resistance coefficient of the concrete compressive strength is not greater than 75% or the cross-section erosion depth of the reinforced concrete specimen (14) reaches the thickness of the concrete protective layer, the test is stopped in advance; S3, after the entire test sampling period is completed, the performance of the concrete specimen (14) is tested according to the test plan.

2. The method for simulating concrete durability environment according to claim 1, characterized in that: The chamber A (24) and the chamber B (25) adopt an assembled warehouse plate structure. The inner and outer walls of the chamber A (24) and the chamber B (25) are stainless steel plates, and the middle is filled with thermal insulation foam material. A chamber door is provided on one side of the chamber A (24) and the chamber B (25), and an observation window is provided on the chamber door.

3. The method for simulating concrete durability environment according to claim 1, characterized in that: The temperature control system (6) includes a refrigeration compressor and a titanium alloy electric heater, and the humidification system (8) includes a stainless steel armored humidifier, a water cut-off protector, an automatic water level controller and an automatic water filling system; the air conditioning system (5) includes a centrifugal fan, and the air outlet of the centrifugal fan is connected to the A chamber (24) and the B chamber (25); the shower system (4) includes a spray device and a nozzle connected to the spray device, and the nozzles of various different calibers are arranged on the top of the A chamber (24) and the B chamber (25); the lighting system (2) and the ultraviolet infrared lamp system (3) are arranged on the top of the A chamber (24) and the B chamber (25), and the ultraviolet infrared lamp system (3) includes an ultraviolet lamp for testing the aging of polymer specimens and an infrared lamp for heating the environment.

4. The method for simulating concrete durability environment according to claim 1, characterized in that: The gas control system (9) is configured to control the carbon dioxide concentration inside the environmental simulation device and to monitor the carbon dioxide concentration inside the environmental simulation box in real time to perform a carbonation test on the concrete specimen.

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