基于高模量青混合物的高回收含量RAP的实验研究
Xin Wang1, Bangwei Wu1, Zhengguang Wu1,2
1College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China.
Materials (Basel, Switzerland)
|June 27, 2025
概括
高模块青混合物有效地回收再生青路面 (RAP),显示出更好的高温性能和经济效益. 这种方法为道路建设中高含量的RAP回收提供了一种可持续的方法.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
背景情况:
- 回收青路面 (RAP) 含有老青,其性能与硬青相似.
- 高模量青混合物 (EME) 适用于高含量的RAP回收.
- 目前的回收方法在最大限度地利用RAP方面存在局限性.
研究的目的:
- 评估在高模量青混合物 (EME) 中使用RAP的可行性.
- 分析不同RAP内容的EME的表现.
- 为了比较基于RAP的EME与传统青混合物的经济可行性.
主要方法:
- 回收青,硬青和SBS修改青的特征.
- 设计含有0-60%RAP的EME13混合物.
- 与经过修改的乙烯-丁-乙烯 (SBS) 的Sup13混合物进行比较.
主要成果:
- 回收青与硬青共享特征,验证其在EME中的使用.
- 增加EME13中的RAP含量提高了高温性能 (20-60%),但稍微降低了低/中温裂纹阻力 (10-20%).
- 具有高RAP含量的EME13在SBS修改后的Sup13上表现出显著的经济优势,尽管性能差异很小.
结论:
- 高模量青混合物 (EME) 可以有效地纳入高百分比的再生青路面 (RAP).
- 基于RAP的EME为传统青混合物提供了一种经济高效的替代方案.
- 这项研究提出了可持续,高含量的RAP回收利用的可行技术策略.
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