2017 Volume 28 Pages 133-142
Air-void structures of concretes were evaluated by two methods. One is the traditional procedure of ASTM C457, the linear-traverse method. The other is a method in which a set of air voids is treated as a spatial point process. The sizes of the air voids identified and the assumed spatial arrangements differ between these two evaluation methods. As a result, the characteristic distances defined by the nearest neighbor distance function for air voids are different from the traditional spacing factors. However, random properties and distances between the voids that were evaluated by the point process procedure did not contradict the properties evaluated by the linear-traverse method. The method based on the point process statistics is promising as an easy method for evaluating air-void systems in concretes.
