使用回收发动机油和SBS粘合剂修改的聚合物修改RAP的热混合青的性能
Byung-Sik Ohm1, Tri Ho Minh Le2
1Department of Highway & Transportation Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang-si 10223, Gyeonggi-Do, Republic of Korea.
Polymers
|January 10, 2026
概括
这项研究引入了一种混合方法,使用循环发动机油废弃物 (REOW) 和 styrene-butadiene-styrene (SBS) 来增强热混合青 (WMA) 与老化的再生青路面 (RAP). 该方法有效地恢复了高性能WMA的老化聚合物改性结合剂 (PMB) 特性.
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.
- 可持续路面技术 可持续路面技术
背景情况:
- 在热混合青 (WMA) 中,再生青路面 (RAP) 的使用正在增加.
- 在RAP中老化的聚合物改性粘合剂 (PMB) 由于氧化和降解而导致硬和裂问题.
- 现有的方法很难在RAP中恢复老化的PMB属性.
研究的目的:
- 评估WMA中含有PMB的老式RAP的混合修改策略.
- 调查回收机油废弃物 (REOW) 和 styrene-butadiene-styrene (SBS) 对RAP粘合剂和混合物性能的联合影响.
- 评估WMA混合物的性能与混合修改的RAP.
主要方法:
- 结合剂制备:使用70/30处女-RAP混合物使用对照,REOW-修改和REOW-SBS混合结合剂.
- 结合剂的表征:风湿学分析和多重压力爬行恢复 (MSCR) 试验.
- 混合物评价:用30%重量%的RAP测试WMA以检测湿度损伤 (TSR), (汉堡深度) 和裂纹 (SCB断裂能量).
主要成果:
- REOW软化了粘合剂,但降低了弹性回收;添加SBS恢复了弹性反应.
- 混合系统实现了83%的TSR,将汉堡深度降低了约20%,SCB断裂能量增加了约30%.
- 在粘合剂和混合物尺度上都观察到性能改善.
结论:
- 混合再生增强策略有效地振兴了老化的PMB化学和聚合物弹性.
- 这种方法使得使用RAP从老PMB路面生产高性能WMA成为可能.
- 该研究表明,将具有挑战性的RAP材料纳入可持续青混合物中的可行解决方案.
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