Asphalt mixture water-temperature-force multi-factor coupling test device

Abstract

The utility model belongs to the field of asphalt mixtures, relates to a water-temperature-force multi-factor coupling test device for an asphalt mixture, and aims to solve the problems that in the prior art, water-temperature-force multi-factor coupling cannot be simulated at the same time to detect the damage of a test piece of the asphalt mixture, and the asphalt mixing stability cannot be tested and judged in the environment. The bottom of the pressure tank is provided with a support, the top of the pressure tank is provided with a circle of annular edge, the tank cover is connected with the annular edge through a plurality of spiral sealing screwing pieces, an output shaft of the motor is in threaded connection with the transmission pressing plate, and the pressure gauge, the pressure release valve and the air pipe are all arranged in the middle of the side wall of the pressure tank. A circle of positioning edge is arranged on the lower middle portion of the inner wall of the pressure tank, the outer wall of the pressure tank is sleeved with the heating belt, the water inlet pipe and the water outlet pipe are both communicated with the water pool, water easily intrudes into the asphalt mixture through a water-temperature-force multi-factor coupling test, the asphalt mixture is greatly damaged, and the test is completed.

Description

Technical Field

[0001] The utility model belongs to the field of asphalt mixtures, and in particular relates to a water-temperature-force multi-factor coupling test device for asphalt mixtures. Background Art

[0002] Asphalt is a dark brown complex mixture of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid, mostly in the form of liquid or semi-solid petroleum. The surface is black and soluble in carbon disulfide and carbon tetrachloride. Asphalt is an organic gelling material that is waterproof, moisture-proof and anti-corrosive. Asphalt can be mainly divided into three types: coal tar asphalt, petroleum asphalt and natural asphalt: among them, coal tar asphalt is a by-product of coking. Petroleum asphalt is the residue after crude oil distillation. Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the earth's crust. Asphalt is mainly used in industries such as coatings, plastics, rubber, and paving roads. Asphalt mixture specimens are a kind of workpieces made of asphalt. The existing technology cannot simultaneously simulate the water-temperature-force multi-factor coupling to detect the damage of asphalt mixture specimens. The stability of asphalt mixture in this environment cannot be determined by test. Utility Model Content

[0003] In order to solve the problem that the prior art cannot simultaneously simulate the damage detection of asphalt mixture specimens by the coupling of water, temperature and force, and the stability of the asphalt mixture in this environment cannot be tested and determined, the utility model provides an asphalt mixture water-temperature-force multi-factor coupling test device.

[0004] The utility model is realized by the following technical scheme: an asphalt mixture water-temperature-force multi-factor coupling test device, which includes a pressure tank, a tank cover, a pressure gauge, a pressure relief valve, an air pipe, an air pump, a heating belt, a motor, a transmission pressure plate, a spring column, a pressure plate, a water inlet pipe, a water outlet pipe, a water pool and two solenoid valves;

[0005] A support is provided at the bottom of the pressure tank, a ring edge is provided at the top of the pressure tank, the tank cover is connected to the ring edge by multiple spiral sealing screws, a motor is fixed at the middle of the tank cover, the output shaft of the motor is arranged in the pressure tank, and the output shaft of the motor is a threaded shaft, the threaded shaft of the motor is threadedly connected to the transmission pressure plate, the bottom of the transmission pressure plate is fixedly connected to multiple spring columns, the bottom of each spring column is fixedly connected to a pressure plate, the pressure gauge, the pressure relief valve and the air pipe are all arranged in the middle of the side wall of the pressure tank, one end of the air pipe is connected to the pressure tank, and the other end of the air pipe is connected to the air pump, a positioning edge is provided at the middle and lower part of the inner wall of the pressure tank, the heating belt is sleeved on the outer wall of the pressure tank and is located above the positioning edge, one end of the water inlet pipe and one end of the water outlet pipe are both connected to the side wall of the pressure tank, the water inlet pipe and the water outlet pipe are arranged below the positioning edge from top to bottom, the other end of the water inlet pipe and the other end of the water outlet pipe are both connected to the water pool, and an electromagnetic valve is connected to the water inlet pipe and the water outlet pipe respectively.

[0006] Furthermore, a sealing ring is provided at the inner ring of the annular edge.

[0007] Furthermore, a through hole is provided in the middle of the handheld end of the spiral sealing screw.

[0008] Furthermore, a water pump is provided on the water outlet pipe.

[0009] Furthermore, an electric heating rod is provided in the water pool.

[0010] Beneficial effects:

[0011] The heating belt of this scheme can heat the pressure tank to simulate the heating of asphalt. The pressure tank is equipped with a pressure gauge to monitor the pressure in the pressure tank in real time. The pressure relief valve can automatically open at the upper limit of the working pressure of the pressure tank to reduce the working pressure and ensure the safety of the system. When the pressure drops to the allowable value, it will automatically close again to prevent damage to the equipment and pipelines due to overpressure. The air pump applies air pressure, the motor drives the pressure plate, and finally the pressure is applied to the test piece through the pressure plate. At the same time, the water in the pool provides pressure under the test piece. This scheme uses a water-temperature-force multi-factor coupling test to make it easier for moisture to invade the asphalt mixture, causing greater damage to the asphalt mixture, and complete the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a water-temperature-force multi-factor coupling test device for asphalt mixture.

[0013] In the figure: 1-pressure tank; 2-tank cover; 3-support; 4-screw sealing screw; 5-pressure gauge; 6-pressure relief valve; 7-air pipe; 8-air pump; 9-positioning edge; 10-heating belt; 11-motor; 12-transmission pressure plate; 13-spring column; 14-pressure plate; 15-water inlet pipe; 16-water outlet pipe; 17-water tank; 18-solenoid valve; 19-water pump; 20-electric heating rod. DETAILED DESCRIPTION

[0014] Specific implementation method 1: A water-temperature-force multi-factor coupling test device for asphalt mixture, which includes a pressure tank 1, a tank cover 2, a pressure gauge 5, a pressure relief valve 6, an air pipe 7, an air pump 8, a heating belt 10, a motor 11, a transmission pressure plate 12, a spring column 13, a pressure plate 14, a water inlet pipe 15, a water outlet pipe 16, a water pool 17 and two solenoid valves 18;

[0015] The pressure tank 1 is provided with a support 3 at the bottom, and a ring edge is provided at the top of the pressure tank 1. The tank cover 2 is connected to the ring edge through a plurality of spiral sealing screws 4. A motor 11 is fixed to the middle of the tank cover 2. The output shaft of the motor 11 is arranged in the pressure tank 1, and the output shaft of the motor 11 is a threaded shaft. The threaded shaft of the motor 11 is threadedly connected to the transmission pressure plate 12. The bottom of the transmission pressure plate 12 is fixedly connected to a plurality of spring columns 13. The bottom of each spring column 13 is fixedly connected to a pressure plate 14. The pressure gauge 5, the pressure relief valve 6 and the air pipe 7 are all arranged on the side of the pressure tank 1. In the middle of the wall, one end of the air pipe 7 is connected to the pressure tank 1, and the other end of the air pipe 7 is connected to the air pump 8. A circle of positioning edge 9 is provided in the middle and lower part of the inner wall of the pressure tank 1. The heating belt 10 is sleeved on the outer wall of the pressure tank 1 and is located above the positioning edge 9. One end of the water inlet pipe 15 and one end of the water outlet pipe 16 are both connected to the side wall of the pressure tank 1. The water inlet pipe 15 and the water outlet pipe 16 are arranged below the positioning edge 9 from top to bottom. The other end of the water inlet pipe 15 and the other end of the water outlet pipe 16 are both connected to the water pool 17. A solenoid valve 18 is connected to the water inlet pipe 15 and the water outlet pipe 16 respectively.

[0016] In the present embodiment: a support is provided at the bottom of the pressure tank, and the support is used to support the pressure tank. A ring-shaped edge is provided on the top of the pressure tank, and the ring-shaped edge is an extension of the top of the pressure tank to the outside, which is convenient for placing the tank cover. The tank cover and the ring-shaped edge are connected by multiple spiral sealing screws, and the spiral sealing screws connect the tank cover and the ring-shaped edge to ensure that the tank cover and the ring-shaped edge are relatively sealed, that is, to ensure that the tank cover and the pressure tank are sealed. The output shaft of the motor is arranged in the pressure tank, and the output shaft of the motor is a threaded shaft. The threaded shaft of the motor is threadedly connected to the transmission pressure plate. The bottom of the transmission pressure plate is fixedly connected to multiple spring columns, and the bottom of each spring column is fixedly connected to a pressure plate. When the motor is working, it drives the transmission pressure plate to press down, and the transmission pressure plate presses down the spring column and then presses down the pressure plate. The asphalt test piece is placed above the positioning edge and below the pressure plate. The pressure gauge, the pressure relief valve and the air intake pipe are all arranged on the tank body. The pressure gauge is used to monitor the pressure in the pressure gauge. The pressure valve can automatically open at the upper limit of the working pressure of the pressure tank to reduce the working pressure and ensure the safety of the system. It will automatically close when the pressure drops to the allowable value, thereby preventing damage to equipment and pipelines due to overpressure. One end of the air pipe is located in the cavity of the pressure tank, and the air pipe is used for gas transmission. The other end of the air pipe is connected to the air pump, and the air pump is used to send gas into the pressure tank to increase the pressure. The heating belt is mounted on the outer wall of the pressure tank, and the heating belt is used to heat the pressure tank, and then to increase the temperature of the asphalt test piece in the pressure tank. The pressure tank and the water tank are connected through the water inlet pipe and the water outlet pipe. When the device is in working state, the solenoid valve of the water inlet pipe is in an open state, and the solenoid valve of the water outlet pipe is in a closed state. The water surface in the water pool is higher than the height of the positioning edge in the pressure tank, and a constant water pressure of temperature is provided through the siphon principle. When the device is not in working state, the solenoid valve of the water inlet pipe is in a closed state, the solenoid valve of the water outlet pipe is in a closed state, and there is no water in the pressure tank.

[0017] Specific implementation method 2: A water-temperature-force multi-factor coupling test device for asphalt mixture, with a sealing ring provided on the inner ring of the annular edge.

[0018] In this embodiment: a sealing ring is provided at the inner circle of the annular edge. By providing the sealing ring, the sealing effect between the tank cover and the annular edge can be enhanced, thereby improving the sealing effect between the tank cover and the pressure tank.

[0019] Other implementations are the same as the first specific implementation.

[0020] Specific implementation method three: A water-temperature-force multi-factor coupling test device for asphalt mixture, wherein a through hole is provided in the middle of the handheld end of the spiral sealing screw 4.

[0021] In this embodiment, a through hole is provided in the middle of the handheld end of the spiral sealing screw, and a finger can pass through the through hole to facilitate operation.

[0022] Other implementations are the same as the first specific implementation.

[0023] Specific implementation method 4: A water-temperature-force multi-factor coupling test device for asphalt mixture, a water pump 19 is provided on the water outlet pipe 16.

[0024] In this embodiment, a water pump is provided on the water outlet pipe, and the water pump is used to drain water when the device is not in use or after the device is cleaned. When the device is working, the solenoid valve of the water inlet pipe is closed, the solenoid valve of the water outlet valve is opened, and the water pump works to pump water away.

[0025] Other implementations are the same as the first specific implementation.

[0026] Specific implementation method 5: A water-temperature-force multi-factor coupling test device for asphalt mixture, wherein an electric heating rod 20 is provided in a water pool 17 .

[0027] In this embodiment, an electric heating rod is arranged in the water pool so that the temperature of the injected water can be adjusted to meet the needs of conducting experiments under different experimental conditions.

[0028] Other implementations are the same as the first specific implementation.

Claims

1. A water-temperature-force multi-factor coupling test device for asphalt mixture, characterized by: It comprises a pressure tank (1), a tank cover (2), a pressure gauge (5), a pressure relief valve (6), an air pipe (7), an air pump (8), a heating belt (10), a motor (11), a transmission pressure plate (12), a spring column (13), a pressure plate (14), a water inlet pipe (15), a water outlet pipe (16), a water pool (17) and two solenoid valves (18); The pressure tank (1) has a support (3) at the bottom, a ring edge at the top, the tank cover (2) is connected to the ring edge via a plurality of spiral sealing screws (4), a motor (11) is fixed in the middle of the tank cover (2), the output shaft of the motor (11) is arranged in the pressure tank (1), and the output shaft of the motor (11) is a threaded shaft, the threaded shaft of the motor (11) is threadedly connected to a transmission pressure plate (12), the bottom of the transmission pressure plate (12) is fixedly connected to a plurality of spring columns (13), the bottom of each spring column (13) is fixedly connected to a pressure plate (14), and the pressure gauge (5), the pressure relief valve (6) and the air pipe (7) are all arranged on the side wall of the pressure tank (1). In the middle, one end of the air pipe (7) is connected to the pressure tank (1), and the other end of the air pipe (7) is connected to the air pump (8). A circle of positioning edge (9) is provided at the middle and lower part of the inner wall of the pressure tank (1). The heating belt (10) is sleeved on the outer wall of the pressure tank (1) and is located above the positioning edge (9). One end of the water inlet pipe (15) and one end of the water outlet pipe (16) are both connected to the side wall of the pressure tank (1). The water inlet pipe (15) and the water outlet pipe (16) are arranged below the positioning edge (9) from top to bottom. The other end of the water inlet pipe (15) and the other end of the water outlet pipe (16) are both connected to the pool (17). The water inlet pipe (15) and the water outlet pipe (16) are respectively connected to a solenoid valve (18).

2. The asphalt mixture water-temperature-force multi-factor coupling test device according to claim 1 is characterized by: A sealing ring is arranged at the inner circle of the annular edge.

3. The asphalt mixture water-temperature-force multi-factor coupling test device according to claim 1 is characterized by: A through hole is provided in the middle of the hand-held end of the spiral sealing screw (4).

4. The asphalt mixture water-temperature-force multi-factor coupling test device according to claim 1, characterized in that: A water pump (19) is provided on the water outlet pipe (16).

5. The asphalt mixture water-temperature-force multi-factor coupling test device according to claim 1, characterized in that: An electric heating rod (20) is arranged in the water pool (17).

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