The aim of this paper is to show the complexity of studying air void topology by giving an in-depth literature review. Factors defining air void structure are presented and relationships and correlations are highlighted. The hydraulic conductivity of asphalt is then put in context of air void analyses. A new approach to distinguish constrictions in the air void matrix is introduced. The bigger air voids represent the drainage (volumetric) capacity. The constrictions, on the other hand, have a direct influence on hydraulic conductivity, as clogging could easily diminish or eliminate them. This approach should improve the meaningfulness of studies analysing air void characteristics. With X-ray CT scans, an analysis of the middle section of two artificially soiled porous asphalt cores is then presented. As expected, approximately homogeneous behaviour of air voids as well as constrictions can be observed.

本文的目的是通过进行深入的文献综述来显示研究气孔拓扑的复杂性。介绍了定义气孔结构的因素，并突出了关系和相关性。然后将沥青的水力传导率放在空隙分析的背景下。引入了一种新方法来区分气隙矩阵中的收缩。较大的空隙表示排水量​​（体积）。另一方面，这些收缩对水力传导性有直接影响，因为堵塞很容易减少或消除它们。这种方法应该提高分析气隙特征的研究的意义。然后使用X射线CT扫描对两个人工污染的多孔沥青岩心的中间部分进行分析。不出所料