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Application of various stereological methods to the study of the grain and the crack structure of concrete

Various statistico‐geometrical as well as deterministic stereological methods have been applied to study the structure and the structural defects in plain concrete, subjected to a compressive loading. Up till now use has been made of an artificial spherical single‐sized ceramic aggregate instead of coarse gravel for most of the investigations. Crack patterns which have been visualized with the help of the filtered particle method (based on fluorescence), have been analysed by means of the method of directed secants. Apart from structural information and results for engineering applications, this approach facilitated a mutual comparison of various stereological techniques in this field of materials science.