关键词: 道路工程, 沥青混合料, 车辙, 数字图像处理, 运动轨迹

Abstract:

The rutting of asphalt pavement is always one of the research focuses in road engineering. In this paper, the original image of AC-13C asphalt mixture during the APA rutting test and the corresponding sectional images after the loading respectively for 500, 1000, 2000, 4000 and 6000 times were acquired, and the movement track of coarse particles was analyzed according to the images. The results show that the digital image processing technology has great capability in movement tracking of coarse particles, and that, by defining the rotation angle θ, the displacement L and the statistics △ and α, the complicated particle movement in different loading stages during the APA rutting test can be well described and quantified.

Key words: road engineering, asphalt mixture, rutting, digital image processing, movement track