Research Information System
Yerbilimleri/ Earth Sciences, vol.26, no.2, pp.49-61, 2005 (Scopus)
The waviness and roughness of discontinuity surfaces as well as the angularity and surface roughness of aggregates have been the subject of various engineering investigations. These features are treated using both quantitative and qualitative methods. Certain experimental investigations require that aggregates be prepared upon specific surface features such as angularity and roughness. In this regard, the angularity and surface roughness of aggregates have been analyzed by various investigators both quantitatively and qualitatively. This study handles the angularity and surface roughness of aggregates utilizing the concept of fractal dimension in a quantitative manner. Within the context of the study, large chunks of rocks were brought to the laboratory and broken into pieces as angular, subangular, and spherical shapes. Each group consisted of 120 samples. Four surface profiles were prepared for each sample to be assessed for tractal dimension. The average tractal dimension (Davg) for each sample in every group was calculated. The average fractal dimensions of angular, subangular and spherical aggregates were found to be 1.047, 1.037, and 1.30, respectively. The final product of the study is a guide consisting of various surface profiles along with the accompanying fractal dimensions. It is intended to provide ease of use for determining the fractal dimension of various angularities and surface roughness profiles of aggregates.