道路用 SBS 改性沥青的粘弹性能和流变性能及使用寿命研究

IF 3.2 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives Pub Date : 2024-10-26 DOI:10.1016/j.ijadhadh.2024.103870

Shuang Chen , Chuanfeng Zheng , Wuxing Chen , Wei Guo , Zhiqiang Wei , Hanjun Li , Junpeng Xu

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引用次数: 0

摘要

SBS改性沥青是高等级公路建设中的重要材料，其性能变化直接影响路面性能。本研究从实际路面中提取了不同使用年限的 SBS 改性沥青，通过宏观试验和微观分子动力学模拟研究了不同使用年限 SBS 改性沥青的流变性能。宏观试验结果表明，使用两年后，SBS 改性沥青的针入度值增加了 50.6%；使用 12 年后，SBS 改性沥青的粘度增加了 54.8%。随着使用年限的增加，SBS 改性沥青的 G∗ 和 G″ 呈上升趋势，δ 和 G''/G' 呈下降趋势。SBS 改性沥青的分子动力学模拟结果与宏观实验结果一致。SBS改性沥青的流变性能随着使用寿命的延长呈下降趋势，SBS改性沥青与集料的界面能也呈下降趋势。本文的研究将为今后研究 SBS 改性沥青的劣化规律和制定道路养护计划提供理论依据。

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Study on viscoelastic properties and rheological properties of SBS modified asphalt for road use with service life

SBS modified asphalt is an important material in the construction of high-grade highway, and its performance changes directly affect the pavement performance. In this study, SBS modified asphalt was extracted from the actual pavement with different service years, and the rheological properties of SBS modified asphalt with different service years were studied by macroscopic test and microscopic molecular dynamics simulation. The macroscopic test results show that the needle penetration value of SBS modified asphalt increases by 50.6 % after two years of service, and the viscosity of SBS modified asphalt increases by 54.8 % after 12 years of service. With the increase of service life, G∗ and G″ of SBS modified asphalt showed an increasing trend, and δ and G’’/G’ showed a decreasing trend. The molecular dynamics simulation results of SBS modified asphalt were consistent with the macroscopic experimental results. The rheological properties of SBS modified asphalt showed a decreasing trend with the service life, and the interfacial energies between SBS modified asphalt and aggregate also showed a decreasing trend. The research in this paper will provide a theoretical basis for the future study of the deterioration law of SBS modified asphalt and the formulation of road maintenance plan.

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来源期刊

International Journal of Adhesion and Adhesives 工程技术-材料科学：综合

CiteScore

6.90

自引率

8.80%

发文量

200

审稿时长

8.3 months

期刊介绍： The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.