基于荧光显微技术的温拌沥青图像分析

Analysis of Warm-Mixed Asphalt Image Based on Fluorescence Microscopy

为寻求一种快速检测温拌沥青路用性能的方法,对2种沥青、3种温拌剂制备的14种温拌沥青试样进行了荧光显微检测。通过采用荧光显微技术对温拌沥青进行观察发现:温拌沥青显微图像变化与温拌沥青的延度、针入度和软化点变化特征呈现明显的相关性,表明沥青微观结构与沥青性能指标存在密切的关系,可根据荧光图像结构形态来判定温拌剂对沥青路用性能的影响。

To seek a rapid detection of the road performance of warm-mixed asphalt,the 14 samples of warmmixed asphalt prepared by 2 types of asphalt and 3 kinds of warm-mixed agent are tested by the fluorescence microscopy. By using the fluorescence microscopy to observe the warm-mixed asphalt,it is discovered that the change of the microscopic image of warm-mixed asphalt is apparently related to the variation features of the ductility,penetration and softening point of warm-mixed asphalt. The result shows that there is a close relationship between the asphalt microstructure and asphalt performance indicators,and that the influence of warm-mixed agent on the road performance of asphalt can be determined by the structural form of the fluorescence image.