Testing device for manufacturing rubber solidified soil with low binding material mixing amount

Abstract

The utility model discloses a testing device for manufacturing rubber solidified soil with low binding material mixing amount, which comprises a humidifying device, a curing box, a temperature controller and a heater, a water tank and a pressure pump are fixedly mounted in the humidifying device, the heater, the temperature controller and the curing box are sequentially connected through pipelines, a partition plate is mounted in the curing box, and the temperature controller is connected with the temperature controller through a pipeline. A power bin and a maintenance bin are arranged above and below the partition plate respectively, the atomization nozzles extend to the maintenance bin, a bin door is installed on the front portion of the maintenance bin, and a cooling fan is installed on the rear portion of the power bin.

Description

Technical Field

[0001] This utility model relates to the field of waste rubber recycling technology, specifically to a test device for producing rubber-solidified soil with low cementitious material content. Background Technology

[0002] With the rapid increase in the number of automobiles, the amount of waste rubber tires is also increasing year by year, posing a huge threat to the ecological environment. There is an urgent need to overcome the key technical challenges of efficient recycling and reuse of waste rubber tires. Currently, processing waste rubber tires into waste rubber granules through a series of processing steps, and then incorporating them into suitable engineering materials, can provide a new way for the efficient utilization of waste rubber tires.

[0003] Due to insufficient bearing capacity, many soil engineering projects require solidification treatment to improve their deformation resistance and overall stability. The main solidification method is to chemically treat the soil with cementitious materials such as cement to produce cement-stabilized soil. Waste rubber particles have the characteristics of low stiffness and high resilience. Therefore, adding them to cement-stabilized soil mixtures to prepare waste rubber cement-stabilized soil can improve the deformation resistance of the cement-stabilized soil mixture.

[0004] The particle size of waste rubber granules and the amount of cementitious material are two important factors affecting the properties of solidified soil mixtures. However, during indoor experiments, it was found that when the particle size of waste rubber granules is large and the amount of cementitious material is low, the waste rubber granules inside the solidified soil specimens will deform due to the compaction process during preparation. After the specimens are prepared, the deformed waste rubber granules will rebound. In the early stage of curing, due to the insufficient hydration of the cementitious material, less cementitious material is generated inside. If the rebound of the waste rubber granules is too high, it will cause cracking of the specimens. If the crack size is large, it will damage the waste rubber cementitious soil specimens, making it impossible to conduct tests on various physical and mechanical parameters of the specimens. Therefore, it is necessary to propose an experimental device for preparing rubber-solidified soil with low cementitious material content to solve the above-mentioned technical problems. Utility Model Content

[0005] The main objective of this invention is to provide a testing device for preparing rubber-cured soil with low cementitious material content. This device solves the technical problem that waste rubber cement-cured soil specimens are prone to cracking in the early stages of curing when the cementitious material content is low and the waste rubber particles are large. This invention features a simple structure and ease of operation.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An experimental apparatus for preparing rubber-stabilized soil with low cementitious material content comprises a humidifier, a curing chamber, a temperature controller, and a heater. The humidifier contains a water tank and a pressure pump. The input of the pressure pump is connected to the water tank, and the output of the pressure pump is connected to the curing chamber via a pipe extending into the interior of the curing chamber. Atomizing nozzles are fixedly installed below the pipe. The heater, temperature controller, and curing chamber are connected sequentially via pipes. A humidity-sensitive switch is installed on the pipe between the humidifier and the curing chamber, and a temperature-sensitive switch is installed on the pipe between the temperature controller and the curing chamber.

[0008] As a further embodiment of this utility model, a partition is installed inside the maintenance box, with the power chamber and maintenance chamber located above and below the partition, respectively. The atomizing nozzle extends into the maintenance chamber, a door is installed at the front of the maintenance chamber, and a cooling fan is installed at the rear of the power chamber.

[0009] As a further embodiment of this utility model, the maintenance chamber is provided with three sets of maintenance boxes, each consisting of a side panel and a baffle, with a drain outlet located at the center of each maintenance box.

[0010] As a further embodiment of this utility model, holes are provided on the surface of the side plate and the baffle of the maintenance box.

[0011] As a further embodiment of this utility model, a laser emitter and a laser receiver are respectively installed on the side plate, and the laser emitter and the laser receiver are horizontally aligned.

[0012] As a further embodiment of this utility model, an electric telescopic rod is installed on the upper part of the partition, and a pressure plate is installed at the output end of the electric telescopic rod, with the pressure plate matching the inner diameter of the maintenance box.

[0013] The beneficial effects of this utility model are as follows:

[0014] It can effectively reduce the drawback of waste rubber particles rebounding and causing the waste rubber cement-solidified soil test blocks to crack easily in the early stage of curing, and improve the integrity of the waste rubber cement-solidified soil test blocks during the curing process. Attached Figure Description

[0015] Figure 1 This is a front view of a test apparatus for preparing rubber-cured soil with low cementitious material content according to the present invention.

[0016] Figure 2 This is a rear view of a test apparatus for preparing rubber-cured soil with low cementitious material content according to the present invention.

[0017] Figure 3 This is a cross-sectional view of a test device for preparing rubber-cured soil with low cementitious material content according to the present invention.

[0018] Figure 4This is a schematic diagram of the internal structure of the curing box of a test device for producing rubber-cured soil with low cementitious material content, according to the present invention.

[0019] In the diagram: 1. Humidifier; 2. Curing chamber; 3. Temperature controller; 4. Heater; 5. Pipeline; 6. Chamber door; 7. Cooling fan; 8. Curing chamber; 9. Power chamber; 10. Atomizing nozzle; 11. Curing box; 12. Side panel; 13. Baffle; 14. Drain outlet; 15. Laser emitter; 16. Laser receiver; 17. Electric telescopic rod; 18. Pressure plate; 19. Water tank; 20. Pressure pump; 21. Humidity-sensitive switch; 22. Temperature-sensitive switch; 23. Partition. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Combination Figures 1-4 A test apparatus for producing rubber-cured soil with low cementitious material content is provided, comprising a humidification device 1, a curing chamber 2, a temperature controller 3, and a heater 4. The humidification device 1 has a water tank 19 and a pressure pump 20 fixedly installed inside. The input end of the pressure pump 20 is connected to the water tank 19, and the output end of the pressure pump 20 is connected to the curing chamber 2 via a pipe 5 extending into the interior of the curing chamber 2. An atomizing nozzle 10 is fixedly installed below the pipe 5. The heater 4, temperature controller 3, and curing chamber 2 are also connected sequentially via pipe 5. A humidity-sensitive switch 21 is installed on the pipe 5 between the humidification device 1 and the curing chamber 2, and a temperature-sensitive switch 22 is installed on the pipe 5 between the temperature controller 3 and the curing chamber 2. A partition 23 is installed inside the curing chamber 2. Above and below the partition 23 are a power chamber 9 and a curing chamber 8, respectively. The atomizing nozzle 10 extends into the curing chamber 8. A door 6 is installed at the front of the curing chamber 8, and a cooling fan 7 is installed at the rear of the power chamber 9.

[0022] See Figure 3 and Figure 4 Furthermore, the maintenance chamber 8 contains three sets of maintenance boxes 11. Each maintenance box 11 consists of a side plate 12 and a baffle 13, with a drain outlet 14 located at the center of each box 11. A laser emitter 15 and a laser receiver 16 are respectively installed on the upper part of the side plate 12, and the laser emitter 15 and the laser receiver 16 are horizontally aligned. An electric telescopic rod 17 is installed on the upper part of the partition 23, and a pressure plate 18 is installed at the output end of the electric telescopic rod 17. The pressure plate 18 matches the inner diameter of the maintenance box 11.

[0023] The soil used in the experiment was silt, with waste rubber particles having a particle size of 5 mesh and a volumetric content of 6%. Cement was used as the cementing material, with a cement content of 4%. First, the silt was crushed, dried, and sieved. Second, it was mixed evenly at an optimum moisture content of 22%. Third, waste rubber particles and cement were added to the mixed soil. Finally, the mixture was poured into molds of the required size to create waste rubber cement-solidified soil test blocks. These test blocks were placed in curing chamber 11 for curing. During curing, a humidifying device 1 and a humidity-sensitive switch 21 worked together, while a pressure pump 20 supplied water to the curing chamber 8 via pipe 5, spraying water mist through atomizing nozzles 10 to control the humidity inside the curing chamber 8. A temperature controller 3, a temperature-sensitive switch 22, and a heater 4 worked together to monitor and heat the temperature inside the curing chamber 8 via pipe 5. During curing, the electric telescopic rod 17 works in conjunction with the pressure plate 18 to apply pressure to the top of the curing box 11. When the pressure plate 18 blocks the light from the laser emitter 15, causing the laser receiver 16 to fail to receive the laser, the external PLC controls the electric telescopic rod 17 to start working and drive the pressure plate 18 to press down. When the laser receiver 16 receives the laser, the electric telescopic rod 17 stops working. This device can effectively reduce the drawback of waste rubber particles rebounding and causing the test block to crack easily, and improve the integrity of the waste rubber cement-solidified soil test block during the curing process.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A test apparatus for preparing rubber-stabilized soil with low cementitious material content, comprising a humidification device (1), a curing chamber (2), a temperature controller (3), and a heater (4), characterized in that: The humidifying device (1) is internally fixedly installed with a water tank (19) and a pressure pump (20), the input end of the pressure pump (20) is communicated with the water tank (19), the output end of the pressure pump (20) is communicated with the curing box (2) through a pipeline (5), the pipeline (5) penetrates to the inside of the curing box (2), the atomizing nozzle (10) is fixedly installed below the pipeline (5), the heater (4), the temperature controller (3) and the curing box (2) are sequentially connected through the pipeline (5), the pipeline (5) between the humidifying device (1) and the curing box (2) is installed with a humidity sensitive switch (21), the pipeline (5) between the temperature controller (3) and the curing box (2) is installed with a temperature sensitive switch (22).

2. The test device for preparing low-binder-content rubberized soil according to claim 1, characterized in that: The curing box (2) is internally installed with a partition plate (23), the upper and lower parts of the partition plate (23) are respectively a power compartment (9) and a curing compartment (8), the atomizing nozzle (10) extends to the curing compartment (8), the front part of the curing compartment (8) is installed with a compartment door (6), the rear part of the power compartment (9) is installed with a heat dissipation fan (7).

3. The testing device for preparing low-binder-content rubberized soil according to claim 2, characterized in that: The curing compartment (8) is internally provided with three groups of curing boxes (11), the curing box (11) is composed of a side plate (12) and a baffle (13), the center position of each curing box (11) is provided with a drainage port (14).

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