Rayleigh wave technology for analysis dynamic modulus of asphalt mixtures: feasibility and application

作者：Huining Xu, Xiguang Fu, Anxin Meng, Honghai Cui, Yiqiu Tan · 发表于：International Journal of Pavement Engineering · 年份：2018 · DOI：10.1080/10298436.2018.1533638 · 被引用次数：7 · 研究领域：Ultrasonics and Acoustic Wave Propagation、Seismic Waves and Analysis、Geophysical Methods and Applications

This study focused on the application of Rayleigh wave technology on a non-destructive determination of dynamic modulus of asphalt mixtures. A 3-D finite element numerical algorithm was developed to simulate Rayleigh wave propagation in a multi-layer half-space system. Numerical analysis verified the feasibility of Rayleigh wave technology to capture the mechanical property differences in shallow structures within asphalt pavements. Then, five asphalt mixtures were used in the experimental application of Rayleigh wave technology. A multichannel simulation with one receiver (MSOR) was adopted to generate Rayleigh waves in asphalt mixture samples. Changes in phase velocity-frequency energy spectra and wave velocity were used to evaluate effects of ambient air temperature and asphalt mixture type on wave propagation evolution in asphalt mixtures. Rayleigh wave technology was introduced to dynamic modulus analysis using various experimental temperatures and asphalt mixtures. Obtained modulus was compared with that using impact resonance method to evaluate the prediction precision for analysis dynamic modulus of asphalt mixtures.