关于青路面自愈微囊道路性能的一项研究
Pei Li1, Rongyi Ji2, Chenlong Zhang1
1Guangdong Road and Bridge Construction Development Co., Ltd., Guangzhou 510635, China.
Materials (Basel, Switzerland)
|August 14, 2025
概括
这项研究开发了新的环氧自愈微囊,以提高青路面的耐用性. 修改后的青显示出更好的高温稳定性,耐裂性和疲劳性能,显著提高了自我愈合能力.
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.
- 聚合物化学 聚合物化学
背景情况:
- 青路面的裂减少了使用寿命,虽然青具有有限的自我愈合能力,但微囊提供了增强的维修.
- 使用生物油的传统微囊在高温下表现不佳,需要改进的解决方案.
- 环氧树脂有潜力通过环开放聚合来修复青.
研究的目的:
- 开发和评估用于青改造的两组分环氧自愈微囊 (E-mic和G-mic).
- 评估这些微囊对青混合物的道路性能的影响.
- 为了研究微囊改性青的自我愈合效率.
主要方法:
- 制备两组分环氧自愈微囊 (E-mic 和 G-mic).
- 使用温度扫描,形光束形学和线性振幅扫描测试来评估微体道路性能.
- 测试微囊/青混合物的自我愈合性能.
主要成果:
- 成功合成了球形,微米大小的环氧自愈微 (E-mic: ~23.582 μm,G-mic: ~22.440 μm) 具有良好的分布.
- 微囊在高温条件下保持完整性.
- 微囊/青混合物表现出优异的高温耐受性,低温裂纹耐受性和疲劳性能.
- 最佳的微囊含量 (4%) 实现了67.8%的自我愈合率,比基础青增加了149.2%.
结论:
- 开发的环氧自愈微囊有效地提高了青道路性能和自愈能力.
- 微囊在高温下稳定,提高了对永久变形,裂和疲劳的抵抗力.
- 这种方法提供了一种有前途的方法,通过提高自愈特性来延长青路面的使用寿命.
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