Acta Stereologica Acta Stereologica -  Volume 12 (1993)  Number 2 - Proceedings of the sixth European congress for stereology - Part one - Dec. 1993 

Identification of trans- and intercrystalline image of the fracture surfaces of rock specimens

Jakub Bodziony
Strata Mechanics Research Institute, Polish Academy of Sciences, Ul. Reymonta 27, 30-059 Kraków, Poland
Mariusz Młynarczuk
Strata Mechanics Research Institute, Polish Academy of Sciences, Ul. Reymonta 27, 30-059 Kraków, Poland
Teresa Ratajczak
Strata Mechanics Research Institute, Polish Academy of Sciences, Ul. Reymonta 27, 30-059 Kraków, Poland

Abstract

One of the important aspects of the mechanism of brittle cracking is the geometry of fracture, i.e. its morphology and trans- or intercrystalline image. In the paper consideration has been given to fractures of dolomite and quartzite specimens obtained as a result of direct tensile test and brazilian test. Reconstruction of specimens was obtained by gluing. The linear stereological analysis was performed. Two groups of crystals have been identified: (1) crystals not adjacent to the fracture, (2) crystals adjacent to the fracture. It has been found in particular, that the mean intercept length of crystals in group 2 is significantly greater than the mean intercept length of crystals in group 1. Trans- or intercrystalline cracking depends not only on the type of the rock, but also on the mode of obtaining the fracture.

Keywords : cracking of rocks, intercrystalline fracturing, linear stereological analysis, transcrystalline fracturing

To cite this article

Jakub Bodziony, Mariusz Młynarczuk & Teresa Ratajczak, «Identification of trans- and intercrystalline image of the fracture surfaces of rock specimens», Acta Stereologica [En ligne], Volume 12 (1993), Number 2 - Proceedings of the sixth European congress for stereology - Part one - Dec. 1993, 229-234 URL : https://popups.ulg.ac.be/0351-580x/index.php?id=1595.