Study of air void topology of asphalt with focus on air void constrictions – a review and research approach
Study of air void topology of asphalt with focus on air void constrictions – a review and research approach
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沥青空隙拓扑结构的研究--以空隙收缩为重点--综述与研究方法
DOI：
10.1080/14680629.2021.1907215
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发表时间：
2021-06
影响因子：
3.7
通讯作者：
B. Schuck;Tim Teutsch;S. Alber;W. Ressel;H. Steeb;M. Ruf
中科院分区：
文献类型：
--
作者：
B. Schuck;Tim Teutsch;S. Alber;W. Ressel;H. Steeb;M. Ruf
本文的目的是通过深入的文献综述来展示研究空气空隙拓扑结构的复杂性。定义空气空隙结构的因素，并突出的关系和相互关系。然后将沥青的导水率置于空隙分析的背景下。介绍了一种新的方法来区分空气空隙矩阵中的收缩。较大的空气空隙代表排水（体积）能力。另一方面，收缩对水力传导性有直接影响，因为堵塞可以很容易地减少或消除它们。这种方法应提高研究的意义分析空隙的特点。通过X射线CT扫描，对两个人工污染的多孔沥青芯的中间部分进行了分析。正如预期的那样，可以观察到空气空隙以及收缩的近似均匀的行为。
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.