Relationship between texture and mechanical properties of granites, central Sweden, by use of image-analysing techniques

Autor:	Jimmy Stigh, Urban Åkesson, Mattias Göransson, Jan Erik Lindqvist
Rok vydání:	2001
Předmět:	geography geography.geographical_feature_category Mineral Fragmentation (computing) Mineralogy Geology Geotechnical Engineering and Engineering Geology Texture (geology) Grain size Abrasion (geology) law.invention Volcanic rock Optical microscope law Rock microstructure
Zdroj:	Bulletin of Engineering Geology and the Environment. 60:277-284
ISSN:	1435-9529
DOI:	10.1007/s100640100105
Popis:	Rock texture is of great importance in understanding the mechanical properties of a rock. Los Angeles and studded tyre tests were used to assess the mechanical properties of homogeneous acidic plutonic and volcanic rocks and these properties were related to the rock texture using image analysis and the more common optical microscopy. The image-analysing technique was based on SEM/BSE images, where the perimeter was measured on each mineral phase in order to numerically quantify a texture parameter. The results demonstrate that rocks with high perimeter values have the best resistance to fragmentation and abrasion. A high perimeter corresponds to fine-grained rocks where the minerals occur as individual grains rather than monomineralic aggregates. An increase in grain size and the formation of mineral aggregates of the same phase have a negative effect on the quality of the rock.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e7e522760bf43da7619183e7eb6cbe75 https://doi.org/10.1007/s100640100105 Zobrazit plný text záznamu Full text from SpringerLink