Ultraviolet radiation-oxygen-temperature-humidity coupled asphalt aging testing device and method

Abstract

The invention discloses an ultraviolet radiation-oxygen-temperature-humidity coupled asphalt aging testing device and method. The ultraviolet radiation-oxygen-temperature-humidity coupled asphalt aging testing device comprises a control box, an environment box, a power assembly arranged in the control box, an object carrier stage and a rotating shaft, wherein the object carrier stage and the rotating shaft are arranged in the environment box; a control panel is arranged on the control box; the control box is positioned at the bottom of the environment box; an output shaft of the power assemblyis connected with the lower end of the rotating shaft; the object carrier stage is arranged on the upper part of the rotating shaft and is distributed aslant; a sample accommodating dish is arrangedon the object carrier stage; a plurality of ultraviolet lamps and sensor groups for detecting temperature, humidity and oxygen concentration in the environment box are arranged on the inner wall of the environment box; an outlet of an air blast system communicates with an air inlet of the environment box; the control panel is connected with a control end of the air blast system, the output ends ofthe sensor groups and the control end of the power assembly. According to the device and the method disclosed by the invention, an asphalt aging test on intensity of ultraviolet rays, the temperature, the oxygen flux and the humidity under constant and transforming modes can be realized.

Description

technical field [0001] The invention relates to an asphalt aging test device and method, in particular to an asphalt aging test device and method coupled with ultraviolet radiation-oxygen-temperature-humidity. Background technique [0002] In the natural environment, the aging of asphalt is mainly affected by heat, oxygen, light and water. At present, there is no test device and method corresponding to the actual natural environment to evaluate the aging of asphalt under the coupling of multiple factors. The present invention designs a kind of asphalt An aging test device that is coupled with multiple factors such as ultraviolet radiation, thermal oxygen, and humidity, and proposes a test method based on the aging test device and an index for evaluating the degree of aging, so that the aging of asphalt in the natural environment can be simulated more accurately. And evaluate the aging degree of asphalt under the coupling effect of multiple factors. [0003] Heat, oxygen, li...

AI Technical Summary

Problems solved by technology

[0002] In the natural environment, the aging of asphalt is mainly affected by heat, oxygen, light and water. At present, there is no test device and method corresponding to the actual natural environment to evaluate the aging of asphalt under the coupling of multiple factors. The present invention designs a kind of asphalt An aging test device that is coupled with multiple factors such as ultraviolet radiation, thermal oxygen, and humidity, and proposes a test method based on the aging test device and an index for evaluating the degree of aging, so that the aging of asphalt in the natural environment can be simulated more accurately. And evaluate the aging degree of asphalt under the coupling effect of multiple factors

[0003] Heat, oxygen, light and water will all affect the aging of asphalt, and the aging process is often relatively long and complicated. With the intensification of aging, the chemical properties of asphalt will eventually change greatly, resulting in hardening and cracking of asphalt pavement. Affects the durability and safety of the pavement

At present, asphalt aging test devices based on indoor tests mainly include rotary film ovens, pressure aging instruments, and ultraviolet aging instruments, etc., which are used to simulate short-term aging, long-term aging, and ultraviolet radiation aging of asphalt under thermal oxygen conditions. The test device and test method are used to simulate and illustrate the aging process of asphalt under the coupled effects of multiple factors such as heat, oxygen, light and water, and do not involve the aging of asphalt under constant and changing modes of ultraviolet intensity, temperature, oxygen flux and humidity. experiment method

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