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Arching Structures in Granular Sedimentary Deposits
- 1.0392958 - ÚCHP 2014 RIV CH eng J - Journal Article
Kulaviak, Lukáš - Hladil, Jindřich - Růžička, Marek - Drahoš, Jiří - Saint-Lary, L.
Arching Structures in Granular Sedimentary Deposits.
Powder Technology. Roč. 246, SEP (2013), s. 269-277. ISSN 0032-5910. E-ISSN 1873-328X
R&D Projects: GA ČR GA104/07/1110; GA AV ČR IAAX00130702; GA MŠMT(CZ) LG11014
Institutional support: RVO:67985858 ; RVO:67985831
Keywords : wet granulars * deposit * arching structure
Subject RIV: CI - Industrial Chemistry, Chemical Engineering; DB - Geology ; Mineralogy (GLU-S)
Impact factor: 2.269, year: 2013
Experimental results on arching structures in sedimentary deposits are presented. Polydisperse mixtures of rough non-spherical natural calcite particles (ground limestone) settled collectively in a liquid, in a lab-scale experimental cylinder. At the bottom, layers of sediment were produced. The morphology of the deposit layers was studied with the help of visualization and image analysis. Families of interconnected arching patterns in the form of voids or cavities were identified, of highly complex geometry. The effect of the mixture composition on the deposit structure was investigated. It was found that arches tend to form under specific conditions. Large and small grains promoted the arch formation, while the medium grains tended to inhibit arching.
Permanent Link: http://hdl.handle.net/11104/0221696
Number of the records: 1