在青路面表面课程材料中优化切碎的玄武岩纤维的剂量,用于具有功能要求的半刚性底座
Xiangbing Xie1, Yahui He1, Chenchen Liu1
1School of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou, Henan, China.
PloS one
|July 29, 2024
概括
在青路面层中优化青纤维含量可以提高抗和裂纹的性能. 该研究确定了上层,中层和下层的最佳纤维剂量,以提高道路耐用性和结构完整性.
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
- 地质技术工程 地质技术工程
背景情况:
- 青路面材料在应对高温腐蚀和较低层疲劳裂纹方面存在局限性.
- 优化材料选择,以满足路面层的特定功能要求,仍然是研究重点.
研究的目的:
- 优化将玄武岩纤维纳入不同的青路面层,以提高道路性能.
- 根据设计规格和性能标准,确定各种路面层的最佳玄武岩纤维剂量.
主要方法:
- 采用直角测试方法,评估了9个青路面结构,含有不同基石纤维含量.
- 使用有限元方法建模来确定考虑疲劳寿命和超载的最佳结构.
主要成果:
- 玄武岩纤维剂量对道路表面曲沉降和拉伸应变位置在下层的影响很小.
- 剪切应力主要集中在负载的外部边缘.
- 确定了最佳的基岩纤维剂量:上层为0.3%,中层为0.1%,下层为0.3%.
结论:
- 最佳的青路面结构涉及一个强大的基础与薄表面的半刚性基层,结合特定的玄武岩纤维剂量.
- 这项研究为设计持久的玄武纤维青路面结构提供了宝贵的见解,提高了对应激的抵抗力.
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