宏观结构和微观结构对使用三维 (3D) 重建和打印技术的青路面滑动阻力的影响
Fucheng Guo1, Jiupeng Zhang2,3, Jianzhong Pei3
1Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China.
Materials (Basel, Switzerland)
|June 13, 2025
概括
三维 (3D) 打印技术可以复制青路面纹理,以研究它们对滑动阻力的影响. 宏观结构显著影响滑动阻力,特别是在干燥的条件下.
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.
- 运输工程 运输工程
背景情况:
- 滑行阻力对于道路安全至关重要.
- 了解表面纹理对滑动阻力的影响对于路面设计至关重要.
- 分析纹理效应的传统方法可能是有限的.
研究的目的:
- 验证使用3D打印技术的可行性,以调查宏观纹理和微观纹理对青路面滑行阻力的影响.
- 为了比较3D打印的青样本与真实路面的抗滑性能.
- 为了确定宏观纹理和微观纹理对抗滑动的相关性和贡献.
主要方法:
- 捕获和重建了五种真正的青混合物的宏观结构特征.
- 利用3D打印来创建复制这些纹理的标本.
- 在干燥和潮湿条件下进行了比较性滑动阻力分析 (英国摆数 - BPN).
- 计算了宏观纹理和微观纹理的相关性和贡献比例.
主要成果:
- 印刷的青混合物表现出一致的微纹理 (约. 100纳米的粗度).
- 水膜显著影响了印刷标本的抗滑性,与真实标本不同.
- 在干燥条件下打印的标本显示出与在潮湿条件下的真实标本相似的BPN.
- 印刷青混凝土 (AC) 混合物的平均轮深度 (MPD) 与BPN有很强的相关性 (R2=0.91对于湿条件).
- 宏观结构在干燥条件下对抗滑动性贡献了近90%,在潮湿条件下约为50%.
结论:
- 3D打印是一种可行的方法来研究青路面的纹理和抗滑性.
- 宏观结构是影响滑动阻力的主要因素,其贡献因条件而异.
- 该研究提供了关于表面特征和路面安全之间的关系的见解.
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