Modified asphalt with high ultraviolet aging resistance

A modified asphalt and UV technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of not being able to significantly improve the low-temperature crack resistance of asphalt pavement, effectively solving the problems of asphalt UV aging, and asphalt inhibition is not obvious, etc. Achieve the effects of improving the anti-ultraviolet aging ability, prolonging the maintenance cycle and service life, and facilitating the processing technology

Inactive Publication Date: 2016-10-26
CHANGAN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer material itself will also be cracked under ultraviolet radiation, resulting in performance degradation, so the inhibitory effect on the ultraviolet aging of asphalt is not obvious. Under the long-term solar radiation, the asphalt pavement will become brittle and hard; under the driving load and environment Under the action of factors, it is easy to crack, peel and loose, and this phenomenon will be more common in areas with high altitude and low temperature
Although polymer-modified asphalt has greatly increased the cost of asphalt pavement, it still cannot effectively solve the problem of asphalt UV aging, and cannot significantly improve the low-temperature crack resistance of asphalt pavement after use

Method used

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  • Modified asphalt with high ultraviolet aging resistance

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Effect test

Embodiment 1

[0031] Example 1: Modified asphalt with high UV aging resistance

[0032] The present embodiment provides a modified asphalt with high anti-ultraviolet aging function, which is composed of the following raw materials in terms of weight fraction: matrix asphalt is 75.4%, obsidian is 11.2%, bauxite is 6.9%, hydrogenated castor Sesame oil is 4.0%, aluminum-zirconium coupling agent is 2.5%.

[0033] The above-mentioned base asphalt adopts 90# base asphalt, which can be replaced by other types of asphalt.

[0034] The above-mentioned obsidian and bauxite are both 2000 mesh, and can also be replaced by other suitable mesh, such as 600 mesh or 5000 mesh.

[0035] The preparation method of the modified asphalt with high anti-ultraviolet aging function as described above comprises the following steps:

[0036] Step 1, weighing matrix pitch, obsidian, bauxite, hydrogenated castor oil and aluminum-zirconium coupling agent according to the proportion of raw materials, and set aside.

...

Embodiment 2

[0041] Example 2: Modified asphalt with high UV aging resistance

[0042] This embodiment provides a modified asphalt with high UV aging resistance, which is composed of the following raw materials in terms of weight fraction: 76.9% of matrix asphalt, 9.8% of obsidian, 7.6% of bauxite, hydrogenated castor Sesame oil is 3.7%, aluminum zirconium coupling agent is 2.0%.

[0043] This embodiment is the same as that of embodiment 1 to the requirement of raw material and preparation method.

[0044] Table 1 shows the performance test results of the modified asphalt with high anti-ultraviolet aging function in this embodiment.

Embodiment 3

[0045] Example 3: Modified asphalt with high UV aging resistance

[0046] This embodiment provides a modified asphalt with high UV aging resistance, which is composed of the following raw materials in terms of weight fraction: 76.5% of matrix asphalt, 11.8% of obsidian, 6.1% of bauxite, hydrogenated castor Sesame oil is 3.0%, aluminum zirconium coupling agent is 2.6%.

[0047] This embodiment is the same as that of embodiment 1 to the requirement of raw material and preparation method.

[0048] Table 1 shows the performance test results of the modified asphalt with high anti-ultraviolet aging function in this embodiment.

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Abstract

The invention provides modified asphalt with high ultraviolet aging resistance, made from the following materials in percent by weight: 74.8-76.9% of base asphalt, 9.8-13.6% of obsidian, 5.2-7.6% of bauxite, 3.0-4.0% of hydrogenated castor oil, and 2.0-3.2% of aluminum-zirconium coupler, adding up to 100%. Mass researches and experiments show that the modified asphalt produced herein is applied to paving of asphalt pavements and may significantly improve ultraviolet aging resistance of a pavement, reduce cracking speed of active groups, inhibit aging action of ultraviolet upon asphalt to maintain its pavement performance, prevent cracking of the asphalt pavement due to crisping and hardening in later stage, and prolong the maintenance cycle and life of the pavement.

Description

technical field [0001] The invention relates to the technical field of road materials, and relates to modified asphalt, in particular to a modified asphalt with high anti-ultraviolet aging function. Background technique [0002] Due to the advantages of convenient construction and maintenance and good driving stability, asphalt pavement has been widely promoted in various grades of highways, and has gradually developed into the main structural form of highways in our country. However, asphalt is a complex polymer composite material. During long-term use, due to the influence of human factors such as environmental factors and driving loads, the asphalt will age and harden, and the high and low temperature performance will be significantly reduced, which will greatly shorten the use of the road surface. life. Among the complex environmental factors, air, water and ultraviolet rays have a great influence on asphalt aging. At present, the mechanism and prevention measures of as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08K9/04C08K3/34C08K3/22
CPCC08L95/00C08L2201/08
Inventor 何锐陈骞郑睢宁牛冬瑜马晓燕黄鑫陈华鑫王振军
Owner CHANGAN UNIV
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