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Asphalt accelerated aging test device for simulating all-weather multi-environment coupling effect

A technology of accelerated aging and test device, applied in measurement devices, weather resistance/light resistance/corrosion resistance, instruments, etc., it can solve problems such as adhesive aging, and achieve the effects of easy production, slow aging speed, and simple operation.

Pending Publication Date: 2021-07-13
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ozone and nitrogen oxides react with the pavement, causing adhesive degradation

Method used

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  • Asphalt accelerated aging test device for simulating all-weather multi-environment coupling effect
  • Asphalt accelerated aging test device for simulating all-weather multi-environment coupling effect
  • Asphalt accelerated aging test device for simulating all-weather multi-environment coupling effect

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] The asphalt comprehensive aging test device of the all-weather service state of the present invention, as figure 1 , figure 2 Shown includes: synthetic air bottle (1), pressure regulator (2), flow valve (3), ozone generator (4), beaker (5), heatable magnetic stirrer (6), inlet valve (7 ), display screen (8), control panel (9), spray device (10), observation window (11), small test chamber (12), air outlet valve (13), exhaust hood (14), internal pipeline ( 15), ultraviolet irradiation device (16), water pipe (17), sample holder (18), small test chamber inlet valve (19-22), small test chamber outlet valve (23), screen cloth (24).

[0018] The overall diagram of the device: the synthetic air cylinder (1) contains 79% nitrogen and 21% oxygen, the pressure regulator (2) is used to control the air pressure at the outlet of the cylinder, and the fl...

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Abstract

The invention discloses an asphalt accelerated aging test device for simulating an all-weather multi-environment coupling effect. The device comprises a synthetic air bottle, a pressure regulator, a flow valve, an ozone generator, a beaker, a heatable magnetic stirrer, an air inlet valve, a display screen, a control panel, a spraying device, an observation window, a small test box, an air outlet valve, an exhaust hood, an internal pipeline, an ultraviolet radiation device, a water pipe, a sample rack, a small test box air inlet valve, a small test box air outlet valve and a screen. Gas factors are utilized to accelerate simulation of long-term thermo-oxidative aging of the asphalt binder, the aging process of the asphalt binder is accelerated, and trace active oxygen existing in reality is added in a high-concentration form. The device can simultaneously reflect the influence of environmental factors such as temperature, ultraviolet rays, rainfall, oxygen, ozone and nitrogen oxides in the nature to accurately simulate the asphalt aging behavior in all weathers, so that the indoor test result is more in line with the actual service condition of the asphalt pavement.

Description

technical field [0001] The invention relates to an asphalt accelerated aging test device for simulating all-weather multi-environment coupling effects, and belongs to the technical field of asphalt performance testing. Background technique [0002] The main components of asphalt pavement are asphalt, aggregates, mineral powder and additives, among which asphalt is the main binder and plays a key role in the overall performance of the material. Because the asphalt pavement is under natural conditions for a long time and is subjected to the effects of oxygen, temperature, light, exhaust gas, rainfall and other factors, it is prone to aging phenomenon, which will eventually reduce the durability and service life of the asphalt pavement. [0003] Generally speaking, the road asphalt aging test methods can be divided into two categories: one is the natural aging method, that is, using the aging effect of the natural environment on asphalt, to study the composition, structure and ...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/004
Inventor 郭猛刘旭安东毛伟张会生孙爽
Owner BEIJING UNIV OF TECH
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