Asphalt material oxygen isolation ultraviolet ray aging simulation box

Abstract

The invention discloses an asphalt material oxygen isolation ultraviolet ray aging simulation box, which comprises an ultraviolet ray aging box body part and an ultraviolet ray aging test sample part,wherein the ultraviolet ray aging box body part comprises an ultraviolet ray aging box body, an air cooling system, an ultraviolet ray lamp group and a temperature monitoring system; the ultravioletray aging test sample part comprises an ultraviolet ray aging test sample box and a gas exchange system. The accelerated ultraviolet ray aging test on an asphalt material can be realized under the oxygen isolation condition; the aging test can also be performed on the asphalt under the light-heat and light-heat-oxygen coupling conditions; the temperature can be controlled as not greater than 80 DEG C; the precision is 0.5 DEG C; after the temperature range is set, the temperature of the aging experiment box can be monitored and can be accurately controlled in the specified temperature range; through an ultraviolet ray radiation meter, the radiation energy of the ultraviolet rays can be tested; the quantitative analysis of the ultraviolet radiation energy can be convenient; the instrument can be easily operated; the engineering cost is low.

Description

technical field [0001] The invention relates to the technical field of asphalt aging testing, in particular to an oxygen-insulated ultraviolet aging simulation box for asphalt materials. Background technique [0002] As an organic polymer material, asphalt is inevitably aged by light, heat, oxygen and other factors during processing and use. Asphalt aging is an important factor affecting the performance of road asphalt. The most important factors affecting the aging of asphalt are temperature, oxygen, light, dissolution, and mechanical damage and fatigue that occur with the application time. Of course, asphalt aging is the combined effect of various factors. Asphalt aging is a gradual process, and the aging rate directly affects the service life of the pavement. When the asphalt is irradiated by ultraviolet rays, the surface asphalt is first aged and cracks are formed, and the ultraviolet rays will continue to irradiate the internal asphalt, causing the internal asphalt to...

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Problems solved by technology

[0006] 1. Technology 1 provides a kind of equipment for asphalt ultraviolet aging, which can improve the accuracy of temperature control in the oven, and cannot realize asphalt ultraviolet single factor aging test

[0007] 2. Technology 1 can only carry out ultraviolet aging test of asphalt, but cannot carry out asphalt aging test under the coupling condition of light and other factors

[0014] Through the search of the above existing technologies and the review of asphalt ultraviolet aging equipment at home and abroad, it is found that there is currently no equipment that realizes the aging of asphalt under the condition of oxygen isolation by ultraviolet rays. However, the actual asphalt pavement is aged by ultraviolet rays under natural conditions. , exploring the aging of asphalt by ultraviolet rays is a problem that must be solved, and inventing a device suitable for aging of asphalt under the condition of oxygen isolation by ultraviolet rays is also a process that must be experienced in the development of asphalt pavement. Asphalt Oxygen Barrier UV Aging Test Chamber

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