Workability is one of the most commonly used indicators for the capability of asphalt mixtures to be placed and compacted on the roads with long lasting quality and minimum maintenance throughout its service life. Despite of valuable previous efforts for measuring and characterizing workability, none of them has proven successful in representing the field conditions of road constructions. This paper is an attempt towards developing a systematic workability test method focusing on compaction, the so-called compaction flow test (CFT), by simulating field compaction at early stages and at laboratory scale with the main focus on mixture flow. The CFT was applied for different mixtures in order to identify the parameters with highest impact on the asphalt particle movements under compaction forces. A new setting inside X-ray computational tomography (CT) allowed tracing asphalt particles during the CFT and acquiring CT images underlining the reliability of the CFT results. In addition, simple Discrete Element Models (DEM) were successfully generated to justify some of the CFT results.