Device for testing slow release capacity of self-snow-melting asphalt mixture

Abstract

The utility model relates to a device for testing the slow release capacity of a self-snow-melting asphalt mixture, and belongs to the technical field of road engineering testing equipment. The testing device comprises a testing barrel, a partition plate, material plates, fixing plates, sliding rods and an air bag, the air bag is arranged at the bottom in the testing barrel, the partition plate is arranged on the upper side of the air bag, the hollow sliding rods are arranged on the partition plate, a plurality of water permeable holes are formed in the inner walls of the sliding rods, and the sliding rods are sequentially sleeved with the material plates and the fixing plates from bottom to top. The top of the test barrel is provided with a sealing cover, and the lower side of the sealing cover is provided with an electric telescopic rod. According to the device, pavement load and the like are simulated through dynamic water scouring, so that the slow release performance of a sample is conveniently detected, the water consumption is low, various samples can be tested at one time, and the slow release performance of the snow-melting asphalt mixture is effectively evaluated.

Description

Technical Field

[0001] The utility model relates to a device for testing the slow-release ability of self-melting snow asphalt mixture, belonging to the technical field of road engineering testing equipment. Background Art

[0002] Self-melting snow asphalt mixture is a new type of road material. It achieves the function of automatic snow melting and deicing by adding a specific snow melting agent to the asphalt mixture, thereby improving the safety and service life of the road in winter. In the prior art, asphalt pavement materials with self-melting snow function have been developed, but there is a lack of effective testing equipment to evaluate its slow release ability. In order to improve the safety of winter road use, reduce environmental impact, extend the life of the road and reduce maintenance costs, a testing device for self-melting snow asphalt mixture is urgently needed.

[0003] Chinese patent document CN109632616A discloses a self-melting snow pavement water stability performance test device and test method, by setting a constant temperature water bath box, a temperature device, a water bath device and a salt detection device; a water tank for placing the test piece is provided at the bottom of the constant temperature water bath box, and a flushing nozzle arranged at the upper end of the constant temperature water bath box and a water bath circulation pump arranged at one side of the constant temperature water bath box are used. The water outlet of the water bath circulation pump is connected to the flushing nozzle through a circulating water pipe, and the water inlet pipe of the water bath circulation pump is connected to the water tank, so as to realize the effect of live water flushing on the water stability of the mixture; and a refrigeration device and a heating device are attached to different positions of the circulating water pipe, and the refrigeration device and the heating device are connected to a temperature regulator to control the circulating flushing water temperature in the constant temperature water bath box. The device adopts live water flushing test, which will waste a lot of water resources, and can only test one sample at a time, and the test efficiency is low. Summary of the invention

[0004] In view of the shortcomings of the prior art, the utility model provides a device for testing the slow-release ability of self-deicing asphalt mixture, which simulates road load through dynamic water flushing, etc., and is convenient for detecting the slow-release performance of samples. It uses less water and can test multiple samples at one time, thereby effectively evaluating the slow-release performance of snow-melting asphalt mixture.

[0005] The technical solution of the utility model is as follows:

[0006] A device for testing the slow-release capacity of a self-melting snow asphalt mixture comprises a test barrel, a partition, a material plate, a fixing plate, a sliding rod and an airbag, wherein an airbag is arranged at the bottom of the test barrel, a partition is arranged on the upper side of the airbag, a plurality of hollow sliding rods are arranged on the partition, a plurality of water-permeable holes are arranged on the inner wall of the sliding rod, a plurality of material plates and fixing plates are sequentially mounted on the sliding rod from bottom to top, a sealing cover is arranged on the top of the test barrel, and an electric telescopic rod is arranged on the lower side of the sealing cover.

[0007] Preferably, according to the present invention, a heating tube is provided on one side of the test barrel, and a placement space for the heating tube is reserved on the material plate to avoid interference.

[0008] Preferably, according to the present invention, a temperature sensor is provided on the lower side of the sealing cover to monitor the temperature inside the barrel.

[0009] Preferably, according to the present utility model, a drain outlet is provided at the bottom of the test barrel, and a solenoid valve is provided on the drain outlet.

[0010] According to the preferred embodiment of the present invention, the inner wall of the test barrel is coated with a polytetrafluoroethylene anti-corrosion coating.

[0011] Preferably, according to the present utility model, the heating tube, the electric telescopic rod and the solenoid valve are all connected to a control system for overall operation monitoring and control.

[0012] The working process of the above-mentioned self-melting snow asphalt mixture slow-release ability testing device is as follows:

[0013] (1) Open the sealing cover and place the samples between the partition plate, material plate and fixed plate in sequence. The number of material plates can be selected according to the number of samples;

[0014] (2) Add water to the test barrel until the water level covers the top of the slide bar;

[0015] (3) Close the sealing cover, set the flushing time and temperature, start the heating tube and the electric telescopic rod. When the electric telescopic rod is extended, it drives the fixed plate, sample, material plate and partition to compress the airbag. When the electric telescopic rod is retracted, the fixed plate, sample, material plate and partition are driven to rise under the rebound effect of the airbag, thereby driving the sample to be flushed in the water;

[0016] (5) After flushing is completed, the solenoid valve opens to drain water;

[0017] (6) After cooling, open the sealed cover, take out the sample and measure its surface conductivity. The slow-release capacity of the snow-melting asphalt mixture is determined based on the conductivity.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model simulates road surface load by dynamic water flushing, etc., which is convenient for testing the slow-release performance of samples, uses less water, and can test multiple samples at one time, effectively evaluating the slow-release performance of snow-melting asphalt mixture.

[0020] 2. The utility model has a simple structure and is easy to operate, thereby improving the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the testing device of the utility model.

[0022] Among them: 1. Heating tube; 2. Drain outlet; 3. Fixed plate; 4. Material plate A; 5. Material plate B; 6. Temperature sensor; 7. Partition; 8. Electric telescopic rod; 9. Sliding rod A; 10. Sliding rod B; 11. Air bag; 12. Solenoid valve; 13. Water hole; 14. Test barrel; 15. Sealing cover. DETAILED DESCRIPTION

[0023] The present invention will be further described below through embodiments and in conjunction with the accompanying drawings, but is not limited thereto.

[0024] Embodiment 1:

[0025] like Figure 1 As shown, this embodiment provides a device for testing the slow-release ability of self-melting snow asphalt mixture, including a test barrel 14, a partition 7, a material plate A4, a material plate B5, a fixed plate 3, a slide bar A9, a slide bar B10 and an airbag 11, wherein the airbag 11 is arranged at the bottom of the test barrel 14, a partition 7 is arranged on the upper side of the airbag 11, and both sides of the partition 7 are slidably arranged in the test barrel through slide rails, and hollow slide bars A9 and slide bars B10 are arranged on the partition 7, and a plurality of water-permeable holes 13 are arranged on the inner walls of the slide bars A9 and B10, and the slide bars A9 and B10 are sequentially covered with the material plate A4, the material plate B5 and the fixed plate 3 from bottom to top, and a sealing cover 15 is arranged on the top of the test barrel 14, and an electric telescopic rod 8 is arranged on the lower side of the sealing cover 15.

[0026] A heating tube 1 is arranged on one side of the test barrel 14, and a space for arranging the heating tube is reserved on the material plate to avoid interference.

[0027] A temperature sensor 6 is provided at the lower side of the sealing cover 15 to monitor the temperature inside the barrel.

[0028] A drain port 2 is provided at the bottom of the test barrel 14 , and a solenoid valve 12 is provided on the drain port 2 .

[0029] The inner wall of the test barrel 14 is coated with a polytetrafluoroethylene anti-corrosion coating.

[0030] The heating tube, electric telescopic rod and solenoid valve are all connected to a control system for overall operation monitoring and control.

[0031] The working process of the above-mentioned self-melting snow asphalt mixture slow-release ability testing device is as follows:

[0032] (1) Open the sealing cover 15 and place the sample between the partition plate 7, the material plate A4, the material plate B5 and the fixed plate 3 in sequence;

[0033] (2) Add water into the test barrel 14 until the water level covers the top of the slide bar A9;

[0034] (3) Close the sealing cover 15, set the flushing time and temperature, start the heating tube 1 and the electric telescopic rod 8, and when the electric telescopic rod is extended, it drives the fixed plate 3, the sample, the material plate A4, the material plate B5 and the partition 7 to compress the airbag. When the electric telescopic rod is retracted, the fixed plate 3, the sample, the material plate A4, the material plate B5 and the partition 7 are driven to rise under the rebound effect of the airbag 11, thereby driving the sample to be flushed in the water;

[0035] (5) After flushing is completed, the solenoid valve 12 opens to drain water;

[0036] (6) After cooling, open the sealing cover 15, take out the sample and measure its surface conductivity, and determine the slow-release capacity of the snow-melting asphalt mixture based on the conductivity.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the slow-release capacity of self-melting snow asphalt mixture. It is characterized in that It includes a test barrel, a partition, a material plate, a fixed plate, a sliding rod and an airbag, wherein an airbag is arranged at the bottom of the test barrel, a partition is arranged on the upper side of the airbag, a plurality of hollow sliding rods are arranged on the partition, a plurality of water-permeable holes are arranged on the inner wall of the sliding rod, a plurality of material plates and a fixed plate are sequentially mounted on the sliding rod from bottom to top, a sealing cover is arranged on the top of the test barrel, and an electric telescopic rod is arranged on the lower side of the sealing cover.

2. The device for testing the slow-release ability of self-melting snow asphalt mixture as claimed in claim 1, It is characterized in that A heating tube is arranged on one side of the test barrel.

3. The device for testing the slow-release ability of self-melting snow asphalt mixture as claimed in claim 1, It is characterized in that A temperature sensor is arranged on the lower side of the sealing cover.

4. The device for testing the slow-release ability of self-melting snow asphalt mixture as claimed in claim 1, It is characterized in that A drain outlet is arranged at the bottom of the test barrel, and a solenoid valve is arranged on the drain outlet.

5. The device for testing the slow-release ability of self-melting snow asphalt mixture as claimed in claim 1, It is characterized in that The inner wall of the test barrel is coated with polytetrafluoroethylene anti-corrosion coating.

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