基于可靠性的再生青路面的回收利用t-分配保证率方法和三级复合再生系统
Yuanyuan Li1, Bowen Hu1, Kefeng Bi1
1School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China.
Materials (Basel, Switzerland)
|February 27, 2026
概括
这项研究提高了使用复合再生系统从再生青路面 (RAP) 恢复老青的效果. 它解决了梯度变化,并改善了青性能,以实现可持续的道路建设.
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.
- 可持续建筑 可持续建筑
背景情况:
- 大规模的再生青路面 (RAP) 使用受到老青 (AA) 变化和不完全的复苏理解的阻碍.
- 解决分级变化和优化AA回收对于可持续的道路基础设施至关重要.
研究的目的:
- 通过复合材料再生,改善复合青 (RAP) 中老青 (AA) 的回收和性能.
- 开发一种可靠的回收材料选择和混合设计方法,考虑到分级的变化.
主要方法:
- 开发了对分级变量的t分布模型和基于可靠性的选择方法.
- 制定了一种三元复合再生系统,其中包括Rjuvenator 1 (R1),SBS修改青和基础青 (BA).
- 使用物理,学和微分析 (FTIR,光显微镜,GPC) 评估AA性能.
主要成果:
- 在t-分配担保利率方法有效量化RAP分级波动,确保稳定的来源在90%的担保利率.
- 10%的R1恢复了高温性能;30%的SBS修改青和BA增强了低温裂纹抵抗.
- 微分析证实了通过物理混合,稀释和分子重量分布优化,而没有新的功能群的复原.
结论:
- 使用t分布模型建立了一个可靠的RAP源评估和混合设计方法.
- 开发的复合材料再生系统有效地恢复了老青的性能.
- 这项研究为提升利用再生青路面的科学基础.
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