A UV-resistant SBS modified asphalt binder suitable for high-altitude areas with strong UV radiation and its preparation method

CN122302582APending Publication Date: 2026-06-30SHANDONG JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG JIAOTONG UNIV
Filing Date
2026-05-13
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In high-altitude areas with strong ultraviolet radiation, SBS modified asphalt is susceptible to aging due to ultraviolet radiation, which leads to a decrease in pavement performance. In addition, traditional hydrotalcite has poor compatibility with asphalt, which can easily lead to segregation, limited low-temperature performance, and increased risk of low-temperature cracking.

Method used

Organic magnesium-aluminum-based hydrotalcite anti-aging agent was prepared by surface grafting modification and intercalation treatment of hydrotalcite, and plasticizer was added to improve compatibility and low-temperature crack resistance, thus preparing UV-resistant SBS modified asphalt binder.

Benefits of technology

It significantly improves the UV shielding ability and low-temperature performance of modified asphalt, reduces storage segregation, lowers the risk of low-temperature cracking, and enhances the durability of asphalt pavement.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention belongs to the technical field of highway engineering construction materials, specifically relating to a UV-resistant SBS modified asphalt binder suitable for high-altitude areas with strong ultraviolet radiation and its preparation method. The UV-resistant SBS modified asphalt binder comprises the following raw materials in parts by weight: 94-96 parts SBS modified asphalt, 1.5-2.5 parts UV-resistant modifier, 2.0-3.0 parts plasticizer, and 0.1-0.3 parts stabilizer. The UV-resistant additive provided by this invention not only significantly improves the anti-aging performance of SBS modified asphalt binder, reducing the technical problem of asphalt pavement performance degradation due to binder aging, but also provides excellent low-temperature crack resistance, reducing the risk of asphalt pavement cracking due to the combined effects of low temperature and load factors. It can meet the construction needs of asphalt pavement in high-altitude areas with strong ultraviolet radiation in western China and has significant application value.
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