典型路面材料的拉伸和压缩力机械参数的非线性特性
Qinxue Pan1,2,3, Yuting Tan4, Jia Hu1,2,3
1School of Transportation, Changsha University of Science and Technology, Changsha 410114, China.
Materials (Basel, Switzerland)
|February 13, 2026
概括
水泥稳定麦卡达姆 (CSM) 和青混合物 (AM) 的机械性能显示双线应力-应变行为. 梯度类型显著影响机械参数,为改善可靠性提供路面设计信息.
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:
- 当前路面结构设计依赖于具有低可靠性的机械性能值.
- 了解路面材料的非线性特性对于准确的设计至关重要.
研究的目的:
- 研究水泥稳定麦卡达姆 (CSM) 和青混合物 (AM) 的非线性拉伸和压缩性能.
- 开发CSM和AM机械性能的多因素值模型.
- 提供路面结构设计参数的参考.
主要方法:
- 在不同的分级类型和负载率下检查了拉伸和压缩应力-应变行为.
- 应用双模块理论来分析不同拉伸和压缩模块的弹性.
- 开发了包括空气空隙比率,加载率,粘合剂含量和温度在内的定量价值模型.
主要成果:
- CSM和AM表现出双线压力-应变行为,与双模块理论相一致.
- 机械参数 (强度,弹性模量,波松比) 显示了功率函数与负载率的关系,稳定在0.1 MPa/s以上.
- 骨密度分级产生了最有利的机械性能;分级类型产生了最显著的影响,特别是在弹性模量上.
结论:
- 拉力机械参数比压力参数对变化更敏感.
- 开发的定量模型准确地描述了机械参数的变化.
- 研究结果为预测路面结构设计参数提供了宝贵的见解,考虑到拉伸压缩差异.
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