老化和盐-联对氧化石墨烯改性青疲劳和自我愈合行为的影响
Ruixia Li1, Wei Zhu1, Hailong Chen2
1School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China.
Materials (Basel, Switzerland)
|May 7, 2025
概括
恶劣的环境会降低青路面的质量. 联合紫外线老化和盐-效应显著减少了青.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 环境科学 环境科学
背景情况:
- 青路面的耐用性受到盐和高海拔紫外线辐射环境的挑战.
- 现有的研究往往忽略了紫外线老化和性性条件对青的综合影响.
- 了解这些协同效应对于改善青路面在恶劣条件下的性能至关重要.
研究的目的:
- 系统地分析青在结合紫外线老化和盐条件下的疲劳和自我愈合行为.
- 调查这些环境因素对70%基青和氧化石墨烯 (GO) 改性青的综合影响.
主要方法:
- 动态剪切风力计 (DSR) 测试,包括频率扫描,线性振幅扫描 (LAS) 和基于LAS的愈合测试.
- 基于粘弹性连续损伤理论的分析.
- 在各种老化和盐合情景下评估青的性能.
主要成果:
- 老龄化增加了青应力峰值和衰减率;加上老化和盐效应,通常会降低应力峰值.
- 老龄化增加了青的疲劳寿命及其衰减率,而结合的效应减少了疲劳寿命并加速了它的衰退.
- 老化影响了青的自我愈合效率,老化和盐效应的结合进一步降低了它.
结论:
- 伴随着紫外线老化和盐状况,它们显著损害了青材料的疲劳性能和自我修复能力.
- 转基因改性青显示出在恶劣环境中增强耐用性的潜力,尽管需要进一步的研究.
- 研究结果为在极端环境条件下青的工程应用提供了关键的见解.
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