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Asphalt ultraviolet ray ageing indoor test method

A test method, ultraviolet technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem that there is no in-depth research on the photo-oxidative aging of asphalt

Inactive Publication Date: 2010-10-06
SHANGHAI TONGJI CONSTR QUALITY INSPECTION STATION
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Problems solved by technology

At present, industry technicians have a relatively deep understanding of the aging of asphalt under the action of oxygen, heat and other factors, but there is no in-depth research on the photo-oxidative aging of asphalt

Method used

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  • Asphalt ultraviolet ray ageing indoor test method
  • Asphalt ultraviolet ray ageing indoor test method
  • Asphalt ultraviolet ray ageing indoor test method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] 1. Determination of UV photoaging time

[0028] The length of ultraviolet radiation directly affects the accuracy of the test results, and the conversion method of converting the total effective time of outdoor ultraviolet radiation into the total effective time of indoor ultraviolet radiation is adopted.

[0029] The calculation of indoor ultraviolet radiation time is based on the annual sunshine hours of 2,577.9h and total solar radiation of 700kJ / cm in Dawu Town, Guoluo Prefecture, Qinghai Province 2 ·a -1 , ultraviolet light accounts for 5%, converted into a total ultraviolet radiation of 35kJ / cm 2 ·a -1 ,Right now

[0030] Q 外 =5%×Q 总 (Formula 1)

[0031] Q 总 ——Total solar radiation (kJ / cm 2 ·a -1 )

[0032] Q 外 ——The total amount of outdoor ultraviolet radiation (kJ / cm 2 ·a -1 )

[0033] C...

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Abstract

The invention provides an asphalt ultraviolet ray ageing indoor test method. An ultraviolet ray ageing simulation system is utilized to simulate radiation intensity of strengthened ultraviolet ray under the natural condition in the man-made environment, outdoor ultraviolet ray radiation total effective time is converted into indoor ultraviolet ray radiation total effective time, so that the radiation intensity of ultraviolet ray reaches more than ten times that of the outdoor condition, test result can be obtained in a short time period, ultraviolet ray indoor test is ensured to well simulate the ultraviolet ray outdoor environment, thus having significance for completely analyzing asphalt ultraviolet ray ageing degree, disclosing changing rule in asphalt ultraviolet ray ageing process, researching asphalt ageing principle and determining asphalt ultraviolet ray ageing resistant evaluation indexes in a strong ultraviolet ray area. The test method is reasonable in design, and test operation is simple, convenient and feasible.

Description

technical field [0001] The invention belongs to the field of traffic and transportation engineering, and relates to an indoor test method for asphalt ultraviolet aging. Background technique [0002] As my country's topography is low in the east and high in the west, the Qinghai-Tibet Plateau in the west, Xinjiang region and the south are the regions with the most sunshine hours and total solar radiation in my country. The weakening is less, so the direct solar radiation reaching the ground is also more than other places. The amount of energy in the ultraviolet band that reaches the ground in solar radiation is mainly determined by the amount of total solar radiation energy, and ultraviolet radiation generally accounts for about 5-7% of the total solar radiation. Therefore, the Qinghai-Tibet Plateau in the west, Xinjiang and the south are the areas with the strongest ultraviolet radiation in China (for example, the ultraviolet intensity in Lhasa, Tibet, is four times that of ...

Claims

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Application Information

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IPC IPC(8): G01N17/00
Inventor 叶奋王宝松武金婷
Owner SHANGHAI TONGJI CONSTR QUALITY INSPECTION STATION
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