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Book Chapter

Petrographic characteristics of intrusive rocks as an evaluation tool of their technical properties

By
Eva Johansson
Eva Johansson
1
Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 971 87 Luleå, Sweden
2
Envix Nord AB, Kylgränd 4A, 906 20 Umeå, Sweden
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Karel Miškovský
Karel Miškovský
2
Envix Nord AB, Kylgränd 4A, 906 20 Umeå, Sweden
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Magnus Bergknut
Magnus Bergknut
3
MTC, Kylgränd 4A, 906 20 Umeå, Sweden
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Šárka Šachlová
Šárka Šachlová
4
Institute of Geochemistry, Mineralogy and Mineral Resources Faculty of Science, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic
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Published:
January 01, 2016

Abstract

The main petrographic variables of intrusive rocks that influence the technical test methods common used within the aggregate industry were identified and evaluated, the aim being to investigate whether petrographic description could be used as a tool for the preliminary quality evaluation of different rock groups. Evaluation of the dependence of the technical test methods on petrographic variables covered 26 intrusive rocks, including some of their altered varieties (orthogneisses), divided into two groups: 17 granitoids and 9 gabbroids. The selective designated samples were analysed to determine their petrographic characteristics and resistance to fragmentation, wear and wear by abrasion from studded tyres. In order to identify the complicated associations between the petrographic and technical properties, multivariate statistical evaluation was performed. The results of statistical evaluation highlighted that mean grain size of mica minerals, grain size distribution, content of mica minerals and mean grain size were the main variables influencing the technical properties of granitoid rocks, while for gabbroid rocks, the main influences were the frequency of microcracks, mica content, grain size distribution and mean grain size.

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Contents

Geological Society, London, Special Publications

Sustainable Use of Traditional Geomaterials in Construction Practice

R. Přikryl
R. Přikryl
Charles University in Prague, Czech Republic
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Á. Török
Á. Török
Budapest University of Technology and Economics, Hungary
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M. Gomez-Heras
M. Gomez-Heras
Institute of Geosciences (CSIC, UCM), Spain
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K. Miskovsky
K. Miskovsky
Envix Nord AB, Sweden
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M. Theodoridou
M. Theodoridou
University of Cyprus, Cyprus
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Geological Society of London
Volume
416
ISBN electronic:
9781862397187
Publication date:
January 01, 2016

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