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Multifunctional asphalt aging experimental device

An aging experiment, multi-functional technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as the influence of the accuracy and authenticity of the experimental results, the large error of the experimental results, and the non-standard experimental results, so as to facilitate real-time observation and guarantee The effect of sealing performance and improving experimental accuracy

Pending Publication Date: 2019-09-06
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, the experimental equipment for asphalt aging is a combination of various equipment, and each experimental equipment can only test a certain type of aging situation and the experimental results are not standard; and the existing ultraviolet light asphalt aging equipment structure Complicated, cumbersome operation, large error in experimental results, which will affect the accuracy and authenticity of experimental results

Method used

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  • Multifunctional asphalt aging experimental device
  • Multifunctional asphalt aging experimental device
  • Multifunctional asphalt aging experimental device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Put the No. 110 asphalt sample with a thickness of 10mm into the middle of the base 4, put the sealing ring 5 in the groove, cover the cover assembly tightly with the sealing ring 5, and put a hood on the outside of the cover assembly 3. Put the filter 2 with a wavelength of 340nm on the surface of the upper cover 1; use the vacuum tube 7 to connect the vacuum pump 9 to the outlet channel, turn on the vacuum pump 9 to remove the air in the aging box, and check the vacuum degree through the vacuum gauge until aging After the box is fully vacuumed, close the valve 6, take away the vacuum tube 7, put the box into the box that has been set, and the ultraviolet radiation intensity is 7W / m under the filter 2 with a wavelength of 340nm. 2 irradiated in a UV box for 1 day. Through this experiment, it can be obtained that the ultraviolet radiation intensity in the vacuum environment is 7W / m 2 340nm UV light aging of the No. 110 asphalt sample for one day.

Embodiment 2

[0044]Put the No. 90 asphalt sample with a thickness of 10mm into the middle of the base 4, put the sealing ring 5 in the groove, cover the cover assembly and seal the ring 5 tightly, and put a hood on the outside of the cover assembly 3. Use the vacuum tube 7 to connect the vacuum pump 9 with the lead-out channel, turn on the vacuum pump 9 to remove the air in the aging box, and check the vacuum degree through the vacuum gauge at the same time, close the valve 6 after the aging box is completely vacuumed, and remove the vacuum tube 7. After putting the filter 2 with a wavelength of 320nm into the interior of the aging box, put the whole box into the set and set the ultraviolet radiation intensity to be 14W / m under the filter 2 with a passable wavelength of 320nm 2 3 days in a UV box. Through this experiment, it can be obtained that the ultraviolet radiation intensity in the vacuum environment is 14W / m 2 The No. 90 asphalt sample was aged by 320nm UV light for three days.

Embodiment 3

[0046] Put the No. 90 asphalt sample with a thickness of 10mm into the middle of the base 4, put the sealing ring 5 in the groove, cover the cover assembly and seal the ring 5 tightly, and put a hood on the outside of the cover assembly 3. Use the vacuum tube 7 to connect the vacuum pump 9 with the lead-out channel, turn on the vacuum pump 9 to remove the air in the aging box, and check the vacuum degree through the vacuum gauge at the same time, close the valve 6 after the aging box is completely vacuumed, and remove the vacuum tube 7. After putting the filter 2 with a wavelength of 360nm into the inside of the aging box, put the whole box into a pre-set UV radiation intensity of 7W / m under the filter 2 with a wavelength of 360nm 2 9 days in a UV box. Through this experiment, it can be obtained that the ultraviolet radiation intensity in the vacuum environment is 7W / m 2 The 320nm UV light aged the No. 90 bitumen sample for seven days.

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Abstract

The invention discloses a multifunctional asphalt aging experimental device comprising an aging box body a vacuum tube and a vacuum pump. The aging box body has an enclosed structure and is made of glass. The lower part of the aging box body is communicated with one end of the vacuum tube and the other end of the vacuum tube is communicated with the vacuum pump. A vacuum gauge and a vacuum regulator are arranged on the vacuum tube. The asphalt is disposed in the aging box body. The aging box body has a closed structure and includes a base and a cover assembly mounted on the base; the base andthe cover assembly form a box body with a cavity arranged inside; and the base and the cover assembly are made of glass. According to the invention, the multifunctional asphalt aging experimental device has the following beneficial effects: with the vacuum pump and the vacuum tube, the aging box body is vacuumized to realize asphalt aging tests in various vacuum environments under combination of multiple conditions of having ultraviolet light, no ultraviolet light, having an adjustable ultraviolet light waveband range, and having adjustable ultraviolet radiation intensity; and Compared with the existing single-function experimental device, the multifunctional asphalt aging experimental device has advantages of high experimental efficiency, low cost, and great convenience in operation.

Description

technical field [0001] The invention relates to an experimental device, in particular to a multifunctional asphalt aging experimental device. Background technique [0002] Asphalt aging is one of the main causes of asphalt concrete pavement damage, and the damage of asphalt concrete pavement caused by asphalt aging results in huge losses. There are many factors for asphalt aging, such as volatilization, oxidation, polymerization, light, water, thixotropy, etc. In the natural state, it is obvious that not only a single factor has an impact, but a combination of multiple factors. The combination of different factors will produce different effects, and the aging mechanism is more complicated when various factors are combined. In addition, different chemical bonds in asphalt have different sensitivities to different bands of ultraviolet light, and the energy of different bands of ultraviolet light is different. The ultraviolet light aging of asphalt must occur in the sensitive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/002G01N17/004
Inventor 吴少鹏沈逸伦李元元谢君
Owner WUHAN UNIV OF TECH
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