Experimental device for pervious concrete

Abstract

The invention discloses an experimental device for pervious concrete, and relates to the technical field of concrete detection equipment.The experimental device is characterized in that the experimental device comprises a plurality of test boxes, every two adjacent test boxes are connected in a clamped mode, the experimental device further comprises sealing rings, and the sealing rings are fixedly connected to the inner side walls of the test boxes; the sealing ring is used for improving the sealing performance between the concrete block and the inner wall of the test box; the water flow circulating mechanism is arranged at the bottom of the test box, the water flow circulating mechanism is matched with the test box, and the water flow circulating mechanism is used for simulating rainwater; the air cooling mechanism is arranged in the test box and is used for simulating a low-temperature environment; the device has the effects that the temperature in the test box is adjusted through the heating plate and the cold air box, so that the water permeation conditions of the concrete at different natural temperatures in reality are simulated, workers can conveniently record and analyze the water permeation conditions of the concrete at different temperatures, and convenience is brought to the workers.

Description

Technical Field

[0001] The invention relates to the technical field of concrete testing equipment, and more specifically, to an experimental device for permeable concrete. Background Art

[0002] In the field of construction engineering, permeable concrete, as a new type of environmentally friendly building material, plays a key role in regulating urban surface runoff and improving urban heat island effect. In order to ensure the reliable performance of permeable concrete in actual engineering applications, it is essential to conduct comprehensive and accurate experimental research on it. However, the current experimental work on permeable concrete faces many difficulties.

[0003] In terms of experiments to simulate the impact of the natural environment on the performance of permeable concrete, existing experimental devices have obvious defects. The natural environment is complex and changeable. Temperature, as one of the key factors, has a significant impact on the internal pore structure and permeability of permeable concrete. However, existing experimental devices often find it difficult to accurately simulate different temperature conditions. For example, in a high temperature environment, the rapid evaporation of water inside the permeable concrete may cause pore blockage and reduce permeability; at low temperatures, the water in the pores freezes and expands, destroying the concrete structure. Traditional experimental devices cannot effectively simulate these extreme temperature conditions, making it difficult for the experimental data obtained to reflect the performance of permeable concrete in a real complex environment, which brings great difficulties to the rational selection of materials and performance estimation in engineering design.

[0004] Existing experimental methods are also unsatisfactory in simulating rainfall and waterlogging scenarios. Natural rainfall has different intensities and durations, and the depth and duration of waterlogging also vary. These factors will affect the permeability of permeable concrete. However, most current experimental devices can only carry out simple static water injection experiments, and cannot dynamically simulate the actual rainfall process and long-term waterlogging state, resulting in a serious disconnect between the experimental results and the actual engineering scenarios. In addition, when monitoring the permeability of permeable concrete, the data collection and analysis methods of existing devices are relatively backward. In the past, they relied more on manual timed observations and manual recording, which was not only inefficient, but also prone to data deviations due to human negligence. It was difficult to obtain key data in the permeability process in real time and accurately, such as the curve of the change in permeability over time, which seriously restricted the in-depth study of the permeability of permeable concrete.

[0005] In summary, the development of an experimental device for permeable concrete that can accurately simulate the natural environment, achieve efficient data monitoring and have flexible combination functions is of great practical significance and urgency for improving the level of experimental research on permeable concrete and ensuring the quality of engineering construction. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide an experimental device for permeable concrete.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An experimental device for permeable concrete, comprising a plurality of test boxes, with adjacent two test boxes being clamped to each other, and further comprising:

[0009] A sealing ring, which is fixedly connected to the inner side wall of the test box and is used to improve the sealing between the concrete block and the inner wall of the test box;

[0010] A water flow circulation mechanism, which is arranged at the bottom of the test box, is matched with the test box, and is used to simulate rainwater;

[0011] An air cooling mechanism, which is arranged inside the test box and is used to simulate a low-temperature environment;

[0012] A heating component, which is arranged below the air cooling mechanism and is used to simulate a high-temperature environment;

[0013] A permeable detection cotton, which is arranged at the bottom of the test box and is used to detect the water seepage condition of the concrete block in the test box. A temperature and humidity detector is arranged below the permeable detection cotton, and the temperature and humidity detector is used to detect the temperature and humidity conditions of the air below the tested concrete.

[0014] Preferably, a cover plate is covered on the top of the test box. Symmetrically arranged fixing blocks are fixedly connected to the outer side wall of the test box. A rotating rod is fixedly connected to the cover plate, and the end of the rotating rod is rotatably connected to the fixing block;

[0015] One end of the fixing block is fixedly connected with an inclined baffle, and the baffle is matched with the cover plate;

[0016] One end of the cover plate far from the rotating rod is fixedly connected with a clamping block, and a clamping buckle is arranged on the outer side wall of the test box, and the clamping buckle is clamped on the clamping block.

[0017] Preferably, a vertically arranged strip-shaped clamping plate is fixedly connected to the outer side wall of the test box. A limiting plate is fixedly connected to one end of the test box far from the strip-shaped clamping plate. A strip-shaped clamping groove is formed in the limiting plate, and both the top and the bottom of the strip-shaped clamping groove are open, and the strip-shaped clamping groove is matched with the strip-shaped clamping plate. The strip-shaped clamping plates on adjacent two test boxes are inserted into the strip-shaped clamping grooves.

[0018] Preferably, a drainage chamber is formed in the inner side wall of the cover plate. At least two water outlet holes are formed in the bottom of the drainage chamber, and the drainage chamber is communicated with the water flow circulation mechanism.

[0019] Preferably, the water flow circulation mechanism includes:

[0020] A water storage box fixedly connected to the bottom of the test chamber;

[0021] A water collection box fixedly connected to the bottom of the water storage box and communicating with the water storage box. A water pump is fixedly connected to the bottom of the water collection box. The water outlet end of the water pump is fixedly connected to a water delivery pipe. The upper end of the water delivery pipe passes through the top of the water storage box and is fixedly connected to the cover plate, and the end of the water delivery pipe communicates with the drainage chamber.

[0022] Preferably, the sealing ring is rectangular, and a rectangular frame is fixedly connected to the lower end surface of the sealing ring. The outer side wall of the rectangular frame is fixedly connected to the inner side wall of the test chamber, and the rectangular frame is used to carry the concrete block;

[0023] A plurality of interconnected water storage chambers are formed in the sealing ring. At least two water inlet holes are formed in the inner side wall of the sealing ring. A drainage pipe is fixedly connected to the side wall of the water storage chamber close to the inner wall of the test chamber. The lower end of the drainage pipe passes through the side wall of the test chamber and communicates with the water storage box. The drainage pipe and the water inlet holes are both close to the upper end of the sealing ring, and the drainage pipe is located below the water inlet holes.

[0024] Preferably, the air cooling mechanism includes:

[0025] A cold air box fixedly connected to the outer side wall of the test chamber;

[0026] A wind guiding pipe fixedly connected to the inner side wall of the test chamber. An air outlet is formed at the bottom of the wind guiding pipe. The air outlet port of the cold air box is fixedly connected to an exhaust pipe, and the end of the exhaust pipe communicates with the wind guiding pipe.

[0027] Preferably, the heating assembly includes:

[0028] A heating plate fixedly connected to the inner side wall of the test chamber;

[0029] A heat conducting plate fixedly connected to the inner side wall of the test chamber, and a groove is formed in the side wall of the heat conducting plate. The heating plate is located in the groove;

[0030] A temperature sensor is located in the middle of the test chamber and is close to the upper surface of the concrete block. A connecting plate is fixedly connected to the upper surface of the temperature sensor. A connecting rod is fixedly connected to the upper surface of the connecting plate, and the upper end of the connecting rod is fixedly connected to the lower surface of the cover plate.

[0031] Preferably, a first notch is formed on the upper surface of the rotating rod. The first notch is located at the end of the rotating rod, and a vertically arranged limiting block is fixedly connected to the bottom of the first notch.

[0032] A second notch is formed at one end of the rotating rod away from the first notch. The second notch is located on the lower surface of the rotating rod, and a limiting groove is formed at the top of the second notch. The limiting blocks at the ends of adjacent rotating rods are inserted into the limiting grooves.

[0033] Preferably, a fixing plate is fixedly connected to the inner side wall of the sealing ring. A first through hole is formed in the fixing plate, and the position of the first through hole corresponds to that of the water inlet hole. A moving plate is slidably connected to the side wall of the fixing plate. A second through hole is formed in the moving plate, and the second through hole is arranged staggeredly with the first through hole.

[0034] An electric telescopic rod is fixedly connected to the side wall of the fixing plate, and the free end of the electric telescopic rod is fixedly connected to the side wall of the moving plate. The electric telescopic rod is used to control the horizontal movement of the moving plate.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. In the present invention, the strip-shaped clamping plate on the second test box is inserted into the strip-shaped clamping groove on the first test box from top to bottom, and the position of the second notch on the rotating rod of the second test box is opposite to that of the first notch on the first test box. The end of the rotating rod of the second test box is sleeved on the limiting block at the end of the rotating rod of the first test box through the limiting groove, so as to facilitate the splicing of adjacent rotating rods. Then, the strip-shaped clamping plate on the third test box is inserted into the strip-shaped clamping groove on the second test box from top to bottom, and so on, realizing the splicing and combination of multiple test boxes.

[0037] 2. In the present invention, different temperature thresholds are preset for the temperature sensors in multiple test boxes by the background central processor, and the temperature sensors and the test boxes where they are located are numbered and recorded. The temperature in the test box is adjusted by the heating plate and the cold air box, so as to simulate the water permeability of the permeable concrete under different natural temperatures in reality, facilitating the staff to record and analyze the water permeability of the concrete under different temperatures, bringing convenience to the staff.

[0038] 3. In the present invention, the water in the water collecting box is pumped upward through the water conveying pipe to the drainage chamber by the water pump, and then drips downward through the water outlet hole onto the permeable concrete below, so as to simulate the rain in natural weather. The falling water enters the water storage chamber through the water inlet hole and then flows back to the water storage box through the drainage pipe, thus realizing the water permeability of the permeable concrete in rainy days under different temperatures and recording and comparing the detection results.

[0039] 4. In the present invention, the moving plate is pulled in the reverse direction by the electric telescopic rod, so that the positions of the second through holes on the moving plate and the first through holes on the fixed plate are staggered, realizing the closing of the first through holes, and preventing the water accumulated on the upper surface of the permeable concrete from entering the water storage chamber through the water inlet holes and the first through holes. Then, the background central processor controls the water pump to intermittently transport water into the test chamber, and makes the water accumulate on the concrete surface, realizing the water permeability of the concrete when there is accumulated water on the permeable concrete. The gravity sensor records the gravity change data and the time of change on the permeable detection cotton, and records the penetration amount of the permeable concrete and the duration when the permeable concrete initially shows water permeability. At the same time, the staff can observe the water permeability of the permeable concrete in the test chambers at different temperatures, which brings convenience to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 FIG. is a schematic diagram of the overall structure of an experimental device for permeable concrete proposed by the present invention Figure 1 ;

[0041] Figure 2 FIG. is a schematic diagram of the overall structure of an experimental device for permeable concrete proposed by the present invention Figure 2 ;

[0042] Figure 3 FIG. is a cross-sectional view of the test chamber in an experimental device for permeable concrete proposed by the present invention Figure 1 ;

[0043] Figure 4 FIG. is a cross-sectional view of the test chamber in an experimental device for permeable concrete proposed by the present invention Figure 2 ;

[0044] Figure 5 FIG. is a schematic structural diagram of the water flow circulation mechanism in an experimental device for permeable concrete proposed by the present invention;

[0045] Figure 6 FIG. is a schematic internal structural diagram of the water flow circulation mechanism in an experimental device for permeable concrete proposed by the present invention;

[0046] Figure 7 FIG. is a cross-sectional view of the water flow circulation mechanism in an experimental device for permeable concrete proposed by the present invention;

[0047] Figure 8 FIG. is a cross-sectional view of the air-cooling mechanism in an experimental device for permeable concrete proposed by the present invention;

[0048] Figure 9 FIG. is a partial exploded view of the strip-shaped clamping plate and the limiting plate in an experimental device for permeable concrete proposed by the present invention;

[0049] Figure 10This figure shows a partial exploded view of two adjacent rotating rods in an experimental device for permeable concrete proposed by the present invention;

[0050] Figure 11 This figure shows a schematic connection structure between a fixed plate and a moving plate in an experimental device for permeable concrete proposed by the present invention Figure 1 ;

[0051] Figure 12 This figure shows a schematic connection structure between a fixed plate and a moving plate in an experimental device for permeable concrete proposed by the present invention Figure 2 。

[0052] 1. Test box; 2. Sealing ring; 3. Water flow circulation mechanism; 4. Air cooling mechanism; 5. Heating component; 6. Permeability detection cotton; 7. Temperature and humidity detector; 8. Cover plate; 9. Fixed block; 10. Rotating rod; 11. Baffle; 12. Block; 13. Buckle; 14. Strip-shaped clamping plate; 15. Limiting plate; 16. Strip-shaped clamping groove; 17. Drainage chamber; 18. Water outlet hole; 19. Water storage box; 20. Water collection box; 21. Water pump; 22. Water delivery pipeline; 23. Rectangular frame; 24. Water storage chamber; 25. Water inlet hole; 26. Drainage pipeline; 27. Cold air box; 28. Air guide pipeline; 29. Air outlet; 30. Exhaust pipeline; 31. Heating plate; 32. Heat conducting plate; 33. Groove; 34. Temperature sensor; 35. Connecting plate; 36. Connecting rod; 37. First notch; 38. Limiting block; 39. Second notch; 40. Limiting groove; 41. Fixed plate; 42. First through hole; 43. Moving plate; 44. Second through hole; 45. Electric telescopic rod. Detailed implementation manners

[0053] Refer to Figures 1 to 12 。

[0054] This embodiment further describes an experimental device for permeable concrete proposed by the present invention.

[0055] An experimental device for permeable concrete includes a plurality of test boxes 1, and two adjacent test boxes 1 are clamped to each other. It further includes a sealing ring 2, and the sealing ring 2 is fixedly connected to the inner side wall of the test box 1. The sealing ring 2 is used to improve the sealing performance between the concrete block and the inner wall of the test box 1.

[0056] A water flow circulation mechanism 3 is arranged at the bottom of the test box 1. The water flow circulation mechanism 3 cooperates with the test box 1 and is used to simulate rainwater.

[0057] An air cooling mechanism 4 is arranged inside the test box 1. The air cooling mechanism 4 is used to simulate a low-temperature environment.

[0058] A heating component 5 is arranged below the air cooling mechanism 4. The heating component 5 is used to simulate a high-temperature environment.

[0059] The water-permeable detection cotton 6 is arranged at the bottom of the test box 1. The water-permeable detection cotton 6 is used to detect the water seepage condition of the concrete block in the test box 1. A temperature and humidity detector 7 is arranged on the lower side of the water-permeable detection cotton 6. The temperature and humidity detector 7 is used to detect the temperature and humidity conditions in the air below the tested concrete. A gravity sensor is arranged below the water-permeable detection cotton 6. The gravity sensor is connected to the background central processor through a signal. When the water-permeable detection cotton 6 absorbs the water seeping down from the concrete, the weight of the water-permeable detection cotton 6 rises, and the gravity sensor transmits the information to the background central processor for recording.

[0060] A cover plate 8 is covered on the top of the test box 1. Symmetrically arranged fixing blocks 9 are fixedly connected to the outer side wall of the test box 1. A rotating rod 10 is fixedly connected to the cover plate 8. The end of the rotating rod 10 is rotatably connected to the fixing block 9. Covering the cover plate 8 on the upper port of the test box 1 can reduce the evaporation of water in the test box 1, thereby improving the accuracy of the experimental data of the permeable concrete.

[0061] One end of the fixing block 9 is fixedly connected with an inclined baffle 11. The baffle 11 cooperates with the cover plate 8. When the staff rotates the free end of the cover plate 8 upward and makes the cover plate 8 lean on the baffle 11, it is convenient to open the test box 1 and convenient for the staff to place the concrete block in the test box 1.

[0062] A clamping block 12 is fixedly connected to the end of the cover plate 8 away from the rotating rod 10. A clamping buckle 13 is arranged on the outer side wall of the test box 1. The clamping buckle 13 is clamped on the clamping block 12. The cooperation between the clamping buckle 13 and the clamping block 12 is convenient for fixing the free end of the cover plate 8 on the upper port of the test box 1, thereby facilitating the closing of the upper port of the test box 1.

[0063] A vertically arranged strip-shaped clamping plate 14 is fixedly connected to the outer side wall of the test box 1. A limiting plate 15 is fixedly connected to one end of the test box 1 away from the strip-shaped clamping plate 14. A strip-shaped clamping groove 16 is formed in the limiting plate 15. The top and bottom of the strip-shaped clamping groove 16 are both open, and the strip-shaped clamping groove 16 cooperates with the strip-shaped clamping plate 14. The strip-shaped clamping plates 14 on two adjacent test boxes 1 are inserted into the strip-shaped clamping grooves 16. Through the cooperation between the strip-shaped clamping plate 14 and the strip-shaped clamping groove 16, it is convenient to clamp two adjacent test boxes 1 to each other, thereby facilitating the staff to observe and compare the experimental conditions of the concrete in multiple test boxes 1.

[0064] A drainage chamber 17 is formed in the inner side wall of the cover plate 8. At least two water outlet holes 18 are formed in the bottom of the drainage chamber 17, and the drainage chamber 17 is communicated with the water flow circulation mechanism 3.

[0065] The water flow circulation mechanism 3 includes a water storage box 19. The water storage box 19 is fixedly connected to the bottom of the test box 1.

[0066] The water collection box 20 is fixedly connected to the bottom of the water storage box 19, and the water collection box 20 communicates with the water storage box 19. A water pump 21 is fixedly connected to the bottom of the water collection box 20. The water outlet end of the water pump 21 is fixedly connected to a water delivery pipe 22. The upper end of the water delivery pipe 22 passes through the top of the water storage box 19 and is fixedly connected to the cover plate 8, and the end of the water delivery pipe 22 communicates with the drainage chamber 17. The water pump 21 conveys the water in the water collection box 20 upward through the water delivery pipe 22 into the drainage chamber 17, and drips downward through the water outlet hole 18 onto the downward concrete, thereby simulating the falling of rainwater, and testing the water permeability of the permeable concrete in rainy weather.

[0067] The sealing ring 2 is rectangular, and a rectangular frame 23 is fixedly connected to the lower end surface of the sealing ring 2. The outer side wall of the rectangular frame 23 is fixedly connected to the inner side wall of the test box 1. The rectangular frame 23 is used to carry the concrete block. The distance value between the inner side wall and the outer side wall of the rectangular frame 23 is greater than the distance value between the inner side wall and the outer side wall of the sealing ring 2, so as to facilitate the rectangular frame 23 to carry the permeable concrete and prevent the permeable concrete from falling downward onto the permeable detection cotton 6 due to gravity.

[0068] A plurality of mutually communicating water storage chambers 24 are formed in the sealing ring 2, and at least two water inlet holes 25 are formed in the inner side wall of the sealing ring 2. A drainage pipe 26 is fixedly connected to the side wall of the water storage chamber 24 close to the inner wall of the test box 1. The lower end of the drainage pipe 26 passes through the side wall of the test box 1 and communicates with the water storage box 19. The drainage pipe 26 and the water inlet holes 25 are both close to the upper end of the sealing ring 2, and the drainage pipe 26 is located below the water inlet holes 25. The bottom of the water inlet holes 25 is flush with the upper surface of the permeable concrete, so as to facilitate the water on the concrete surface to flow into the water storage chambers 24 through the water inlet holes 25. As the water in the water storage chambers 24 increases, the inside of the sealing ring 2 expands, and the inner side wall of the sealing ring 2 bulges outward, so that the inner side wall of the sealing ring 2 fits against the side wall of the permeable concrete, further increasing the sealing performance between the permeable concrete and the inner wall of the test box 1. At the same time, when the water drips downward and flows into the water storage chambers 24 through the water inlet holes 25, it simulates the rainy weather in natural weather.

[0069] The air-cooling mechanism 4 includes a cold air box 27, and the cold air box 27 is fixedly connected to the outer side wall of the test box 1.

[0070] The air guiding duct 28 is fixedly connected to the inner side wall of the test chamber 1. An air outlet 29 is provided at the bottom of the air guiding duct 28. The air outlet port of the cold air box 27 is fixedly connected to an exhaust duct 30, and the end of the exhaust duct 30 is communicated with the air guiding duct 28. The cold air box 27 is a prior art, and the cold air box 27 is used to blow cold air into the test chamber 1 through the air guiding duct 28, thereby reducing the air temperature inside the test chamber 1, so as to simulate the water permeability of permeable concrete under low temperature weather conditions in natural weather.

[0071] The heating component 5 includes a heating plate 31, and the heating plate 31 is fixedly connected to the inner side wall of the test chamber 1.

[0072] A heat conducting plate 32, the heat conducting plate 32 is fixedly connected to the inner side wall of the test chamber 1, and a groove 33 is provided on the side wall of the heat conducting plate 32. The heating plate 31 is located in the groove 33. The wires on the heating plate 31 are electrically connected to a power storage device such as a storage battery in the prior art. After the heating plate 31 is turned on, the heat on the heating plate 31 diffuses to the outside through the heat conducting plate 32, thereby increasing the air temperature inside the test chamber 1, so as to simulate the water permeability of permeable concrete under hot weather conditions in natural weather.

[0073] A temperature sensor 34, the temperature sensor 34 is located in the middle of the test chamber 1 and is close to the upper surface of the concrete block. A connecting plate 35 is fixedly connected to the upper surface of the temperature sensor 34, a connecting rod 36 is fixedly connected to the upper surface of the connecting plate 35, and the upper end of the connecting rod 36 is fixedly connected to the lower surface of the cover plate 8. The temperature sensor 34 is a waterproof temperature sensor, and the temperature sensor 34, the heating plate 31, and the cold air box 27 are all connected to the background central processor through signals. The temperature sensor 34 is used to monitor the internal temperature of the test chamber 1 and control the opening and closing of the heating plate 31 and the cold air box 27 through the background central processor, so as to control the temperature inside the test chamber 1, so as to facilitate the detection of the water permeability of permeable concrete at different temperatures.

[0074] A first notch 37 is provided on the upper surface of the rotating rod 10. The first notch 37 is located at the end of the rotating rod 10, and a vertically arranged limiting block 38 is fixedly connected to the bottom of the first notch 37.

[0075] One end of the rotating rod 10 away from the first notch 37 is provided with a second notch 39. The second notch 39 is located on the lower surface of the rotating rod 10, and a limiting groove 40 is provided at the top of the second notch 39. The limiting blocks 38 at the ends of two adjacent rotating rods 10 are inserted into the limiting groove 40. When it is necessary to place multiple permeable concretes in multiple test boxes 1 spliced together respectively, the free end of the upper cover plate 8 of one of the test boxes 1 is rotated upward. During the upward rotation of the cover plate 8, the rotating rod 10 is driven to rotate, so as to drive the cover plate 8 on the adjacent test box 1 to rotate through the cooperation of the limiting block 38 and the limiting groove 40, facilitating the staff to open the cover plates 8 at the upper ends of multiple test boxes 1 simultaneously, avoiding the staff opening the cover plates 8 on the test boxes 1 one by one, and saving manpower and time.

[0076] A fixing plate 41 is fixedly connected to the inner side wall of the sealing ring 2. A first through hole 42 is provided in the fixing plate 41, and the position of the first through hole 42 corresponds to that of the water inlet hole 25. A moving plate 43 is slidably connected to the side wall of the fixing plate 41. A second through hole 44 is provided in the moving plate 43, and the second through hole 44 is arranged staggeredly with the first through hole 42.

[0077] An electric telescopic rod 45 is fixedly connected to the side wall of the fixing plate 41. The free end of the electric telescopic rod 45 is fixedly connected to the side wall of the moving plate 43. The electric telescopic rod 45 is used to control the horizontal movement of the moving plate 43. The electric telescopic rod 45 is a waterproof electric telescopic rod. The electric telescopic rod 45 is used to control the horizontal movement of the moving plate 43, so as to control the opening and closing of the water inlet hole 25. And the electric telescopic rod 45 is electrically connected to the background central processor through a signal, facilitating the control of the opening of the electric telescopic rod 45 through the background central processor, so as to facilitate the control of the movement of the position of the moving plate 43 through the electric telescopic rod 45. The wire on the electric telescopic rod 45 is electrically connected to a power storage device such as a storage battery in the prior art.

[0078] Working principle: Splice the required number of test boxes 1 together and arrange them in a row, that is, insert the strip-shaped clamping plate 14 on the second test box 1 into the strip-shaped clamping groove 16 on the first test box 1 from top to bottom, and make the position of the second notch 39 on the rotating rod 10 on the second test box 1 opposite to that of the first notch 37 on the first test box 1. The end of the rotating rod 10 on the second test box 1 is sleeved on the limiting block 38 at the end of the rotating rod 10 on the first test box 1 through the limiting groove 40, facilitating the splicing of two adjacent rotating rods 10. Then insert the strip-shaped clamping plate 14 on the third test box 1 into the strip-shaped clamping groove 16 on the second test box 1 from top to bottom, and so on, realizing the splicing combination of multiple test boxes 1.

[0079] Then, place the permeable concrete to be experimented in the middle part of the sealing ring 2 in the test box 1, so that the sealing ring 2 is located between the permeable concrete and the inner wall of the test box 1, and the lower surface of the permeable concrete is in contact with the upper surface of the permeable detection cotton 6. Then, label and record multiple test boxes 1. Next, preset different temperature thresholds for the temperature sensors 34 in multiple test boxes 1 through the background central processor, and label and record the temperature sensors 34 and the test boxes 1 they are in. For example, the first test box 1 is set as a low-temperature chamber, that is, the highest threshold of the temperature sensor 34 is 10°C. When the temperature sensed by the temperature sensor 34 in the first test box 1 exceeds 10°C, the temperature sensor 34 in the first test box 1 controls the cold air box 27 on the first test box 1 to deliver cold air into the first test box 1 through the background central processor, thereby reducing the temperature in the first test box 1. The second test box 1 is set as a constant-temperature chamber, that is, the threshold of the temperature sensor 34 is 10°C - 30°C. When the temperature sensor 34 senses that the temperature in the second test box 1 is lower than 10°C, the temperature sensor 34 controls the heating plate 31 to turn on through the central processor, and the heating plate 31 bakes the inside of the second test box 1, thereby increasing the temperature inside the second test box 1. When the temperature sensor 34 in the second test box 1 senses that the temperature in the second test box 1 is higher than 30°C, the temperature sensor 34 in the second test box 1 controls the cold air box 27 outside it to start through the background central processor, and the cold air box 27 delivers cold air into the second test box 1 through the air guide pipe 28, thereby facilitating the water permeability of the permeable concrete in a normal temperature environment. The third test box 1 is set as a high-temperature chamber, that is, the lowest threshold of the temperature sensor 34 is 30°C. When the temperature sensed by the temperature sensor 34 in the third test box 1 is lower than 30°C, the temperature sensor 34 controls the heating plate 31 inside the third test box 1 to start through the central processor, and the heating plate 31 bakes the inside of the third test box 1, thereby increasing the temperature inside the third test box 1. Thus, it simulates the water permeability of the permeable concrete under different natural temperatures in reality, facilitating the staff to record and analyze the water permeability of the concrete under different temperature conditions, bringing convenience to the staff.

[0080] Then, water is injected into the test chambers 1 with different temperature thresholds. The electric telescopic rod 45 is activated, and the electric telescopic rod 45 pushes the moving plate 43 to one side. When the second through-hole 44 on the moving plate 43 corresponds to the position of the first through-hole 42 on the fixed plate 41, the moisture on the surface of the permeable concrete flows into the water storage chamber 24 through the water inlet hole 25. As the moisture in the water storage chamber 24 increases, the sealing ring 2 gradually expands. At this time, the inner side wall of the sealing ring 2 protrudes towards the permeable concrete, so that the inner wall of the sealing ring 2 fits against the side wall of the concrete, further improving the sealing performance between the permeable concrete and the inner wall of the test chamber 1, and preventing the moisture on the concrete surface from flowing downward into the bottom of the test chamber 1 through the gap between the concrete side wall and the inner wall of the test chamber 1. When the moisture in the water storage chamber 24 rises to the port of the drainage pipe 26, the water continuously flowing into the water storage chamber 24 flows into the water storage box 19 through the drainage pipe 26 and accumulates in the water collection box 20 at the bottom of the water storage box 19. Then, the water pump 21 is activated, and the water pump 21 pumps the water in the water collection box 20 upward through the water delivery pipe 22 into the drainage chamber 17, and then drips downward through the water outlet hole 18 onto the permeable concrete below, thus simulating rain in natural weather. The amount of water pumped by the water pump 21 is controlled by the background central processor to simulate different amounts of rainfall. The water that has fallen then enters the water storage chamber 24 through the water inlet hole 25 and flows back into the water storage box 19 through the drainage pipe 26, thus realizing the water permeability of the permeable concrete in rainy days under different temperature conditions, and recording and comparing the test results.

[0081] When the water above the permeable concrete seeps downward through the concrete to the bottom of the test box 1, the permeable detection cotton 6 absorbs the moisture or water on the permeable concrete. As the water absorbed by the permeable detection cotton 6 increases, the weight of the permeable detection cotton 6 also increases. At this time, the gravity sensor transmits the weight data of the permeable detection cotton 6 it senses to the background central processor, and records the change time and change duration of the weight data of the permeable detection cotton 6. Then, through the background central processor, the penetration situation of the permeable concrete in the test box 1 at different temperatures during the simulated rainy day is compared, so as to facilitate the staff to judge the quality of the permeable concrete according to the data comparison, which brings convenience to the staff. And because a temperature and humidity detector 7 is arranged on the lower side of the permeable detection cotton 6, and the temperature and humidity detector 7 is connected to the background central processor through a signal, it is convenient for the temperature and humidity detector 7 to transmit the temperature monitoring data and humidity monitoring data in the air below the permeable detection cotton 6 to the background central processing, and compare the humidity detection data detected below the permeable detection cotton 6 with the data information sensed by the gravity sensor below the permeable detection cotton 6 through the temperature and humidity detector 7. When the data on the temperature and humidity detector 7 rises, while the weight of the permeable detection cotton 6 sensed by the gravity sensor remains unchanged, it can be judged at this time that the gravity sensor below the permeable detection cotton 6 is damaged, so the data uploaded by the temperature and humidity detector 7 can be referred to, which is convenient for improving the accuracy of the experimental data of the permeable concrete.

[0082] When it is necessary to imitate the penetration situation of the permeable concrete when there is accumulated water on its surface at different temperatures, the electric telescopic rod 45 is turned on. The electric telescopic rod 45 pulls the moving plate 43 in the reverse direction, so that the positions of the second through holes 44 on the moving plate 43 and the first through holes 42 on the fixed plate 41 are staggered, so that the side wall of the moving plate 43 covers the first through holes 42, realizing the closure of the first through holes 42, and preventing the water accumulated on the upper surface of the permeable concrete from entering the water storage chamber 24 through the water inlet holes 25 and the first through holes 42. Then, through the background central processor, the water pump 21 is controlled to intermittently transport water into the test box 1, and the water is accumulated on the surface of the concrete, realizing the water permeability of the concrete when it is simulated that there is accumulated water on the permeable concrete. And the gravity sensor records the gravity change data and the time of change on the permeable detection cotton 6, records the penetration amount of the permeable concrete and the duration when the permeable concrete initially shows the water permeability situation. At the same time, the staff can observe the water permeability situation of the permeable concrete in the test box 1 at different temperatures, which brings convenience to the staff.

[0083] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An experimental device for permeable concrete, comprising a plurality of test boxes (1), and adjacent two of the test boxes (1) are clamped with each other, characterized in that, Further included are: A sealing ring (2), which is fixedly connected to the inner side wall of the test chamber (1), and the sealing ring (2) is used to improve the sealing performance between the concrete block and the inner wall of the test chamber (1); A water flow circulation mechanism (3), which is arranged at the bottom of the test chamber (1), the water flow circulation mechanism (3) cooperates with the test chamber (1), and the water flow circulation mechanism (3) is used to simulate rainwater; An air cooling mechanism (4), which is arranged inside the test chamber (1), and the air cooling mechanism (4) is used to simulate a low-temperature environment; A heating component (5), which is arranged below the air cooling mechanism (4), and the heating component (5) is used to simulate a high-temperature environment; A water permeability detection cotton (6), which is arranged at the bottom of the test chamber (1), the water permeability detection cotton (6) is used to detect the water seepage condition of the concrete block in the test chamber (1), and a temperature and humidity detector (7) is arranged below the water permeability detection cotton (6), and the temperature and humidity detector (7) is used to detect the temperature and humidity conditions of the air below the tested concrete; 2. The experimental device for permeable concrete according to claim 1, characterized in that, A cover plate (8) is covered on the top of the test chamber (1), symmetrically arranged fixing blocks (9) are fixedly connected to the outer side wall of the test chamber (1), a rotating rod (10) is fixedly connected to the cover plate (8), and the end of the rotating rod (10) is rotatably connected to the fixing block (9); One end of the fixing block (9) is fixedly connected with an inclined baffle (11), and the baffle (11) cooperates with the cover plate (8); One end of the cover plate (8) far away from the rotating rod (10) is fixedly connected with a clamping block (12), and a clamping buckle (13) is arranged on the outer side wall of the test chamber (1), and the clamping buckle (13) is clamped on the clamping block (12); 3. The experimental device for permeable concrete according to claim 2, characterized in that, A vertically arranged strip-shaped clamping plate (14) is fixedly connected to the outer side wall of the test chamber (1), a limiting plate (15) is fixedly connected to one end of the test chamber (1) far away from the strip-shaped clamping plate (14), a strip-shaped clamping groove (16) is formed in the limiting plate (15), the top and bottom of the strip-shaped clamping groove (16) are both open, and the strip-shaped clamping groove (16) cooperates with the strip-shaped clamping plate (14), and the strip-shaped clamping plates (14) on two adjacent test chambers (1) are inserted into the strip-shaped clamping groove (16); 4. An experimental device for permeable concrete according to claim 3, characterized in that, A drainage chamber (17) is formed in the inner side wall of the cover plate (8), at least two water outlet holes (18) are formed in the bottom of the drainage chamber (17), and the drainage chamber (17) is communicated with the water flow circulation mechanism (3); 5. An experimental device for permeable concrete according to claim 4, characterized in that, The water flow circulation mechanism (3) includes: A water storage box (19), which is fixedly connected to the bottom of the test chamber (1); Water collecting box (20), the water collecting box (20) is fixedly connected to the bottom of the water storage box (19), and the water collecting box (20) is communicated with the water storage box (19). A water pump (21) is fixedly connected to the bottom of the water collecting box (20). The water outlet end of the water pump (21) is fixedly connected to a water delivery pipe (22). The upper end of the water delivery pipe (22) passes through the top of the water storage box (19) and is fixedly connected to the cover plate (8), and the end of the water delivery pipe (22) is communicated with the drainage chamber (17).

6. The experimental device for permeable concrete according to claim 5, characterized in that, The sealing ring (2) is rectangular, and a rectangular frame (23) is fixedly connected to the lower end surface of the sealing ring (2). The outer side wall of the rectangular frame (23) is fixedly connected to the inner side wall of the test box (1). The rectangular frame (23) is used for carrying concrete blocks; A plurality of mutually communicated water storage chambers (24) are formed in the sealing ring (2). At least two water inlet holes (25) are formed in the inner side wall of the sealing ring (2). A drainage pipe (26) is fixedly connected to the side wall of the water storage chamber (24) close to the inner wall of the test box (1). The lower end of the drainage pipe (26) passes through the side wall of the test box (1) and is communicated with the water storage box (19). The drainage pipe (26) and the water inlet holes (25) are both close to the upper end of the sealing ring (2), and the drainage pipe (26) is located below the water inlet holes (25).

7. An experimental device for permeable concrete according to claim 6, characterized in that, The air cooling mechanism (4) includes: A cold air box (27), the cold air box (27) is fixedly connected to the outer side wall of the test box (1); A wind guiding pipe (28), the wind guiding pipe (28) is fixedly connected to the inner side wall of the test box (1). An air outlet (29) is formed in the bottom of the wind guiding pipe (28). An exhaust pipe (30) is fixedly connected to the air outlet port of the cold air box (27). The end of the exhaust pipe (30) is communicated with the wind guiding pipe (28).

8. An experimental device for permeable concrete according to claim 7, characterized in that, The heating assembly (5) includes: A heating plate (31), the heating plate (31) is fixedly connected to the inner side wall of the test box (1); A heat conducting plate (32), the heat conducting plate (32) is fixedly connected to the inner side wall of the test box (1), and a groove (33) is formed in the side wall of the heat conducting plate (32). The heating plate (31) is located in the groove (33); A temperature sensor (34), the temperature sensor (34) is located in the middle of the test box (1), and is close to the upper surface of the concrete block. A connecting plate (35) is fixedly connected to the upper surface of the temperature sensor (34). A connecting rod (36) is fixedly connected to the upper surface of the connecting plate (35). The upper end of the connecting rod (36) is fixedly connected to the lower surface of the cover plate (8).

9. The experimental device for permeable concrete according to claim 8, characterized in that, A first notch (37) is formed in the upper surface of the rotating rod (10). The first notch (37) is located at the end of the rotating rod (10). A vertically arranged limiting block (38) is fixedly connected to the bottom of the first notch (37); One end of the rotating rod (10) away from the first notch (37) is provided with a second notch (39). The second notch (39) is located on the lower surface of the rotating rod (10), and a limiting groove (40) is provided at the top of the second notch (39). The limiting blocks (38) at the ends of two adjacent rotating rods (10) are inserted into the limiting grooves (40).

10. The experimental device for permeable concrete according to claim 6, characterized in that, A fixing plate (41) is fixedly connected to the inner side wall of the sealing ring (2). A first through hole (42) is provided in the fixing plate (41). The position of the first through hole (42) corresponds to that of the water inlet hole (25). A moving plate (43) is slidably connected to the side wall of the fixing plate (41). A second through hole (44) is provided in the moving plate (43). The second through hole (44) is arranged staggeredly with the first through hole (42). An electric telescopic rod (45) is fixedly connected to the side wall of the fixing plate (41). The free end of the electric telescopic rod (45) is fixedly connected to the side wall of the moving plate (43). The electric telescopic rod (45) is used to control the horizontal movement of the moving plate (43).

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