摘要
回顾了沥青混合料微细观结构静态及动态识别的研究进展,论述了基于混合料微细观结构的力学特征数值模拟的研究进展,讨论了沥青混合料微细观结构研究中存在的问题,并对其研究方向进行展望。多项研究表明:CCD数码拍照技术与X-ray CT无损伤扫描技术可有效地识别沥青混合料内部结构的空间分布,这两种新技术有着不同的精度与适用范围;X-ray CT是研究沥青混合料内部结构对外部同步加载响应机理的重要途径;有限元、离散元和边界元等诸多数值模拟方法为全面分析沥青混合料微观结构与宏观路用性能的关系提供了新的途径。
The review of the static and dynamic discrimination on microstructure of asphalt mixture was presented. The advances of numerical simulation on microstructure mechanics of asphalt mixture were presented. Some problems and the developing trends in microstructure study on asphalt mixture were discussed. Many researches show that the technology of CCD digital image and X-ray CT can discriminate spatial distribution of the internal structure of asphalt mixture effectively, while they have different scanning accuracies and application scopes. X-ray CT provides an important method to study the response mechanism of internal structure of asphalt mixture to external synchronous load. Many numerical simulation methods, such as finite element method, discrete element method and boundary element method, can provide new methods to study the relationship between microstructure and macro performance of asphalt mixture. 26 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第3期11-15,共5页
Journal of Chang’an University(Natural Science Edition)
基金
国家自然科学基金项目(50578016)
关键词
道路工程
沥青混合料
微细观结构
识别方法
数值模拟
综述
road engineering
asphalt mixture
microstructure
discrimination method
numerical simulation
review
