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This article is cited in 1 scientific paper (total in 1 paper)
Mechanical properties, strength physics and plasticity
Structural analysis of the fracture surface of a heterogeneous body (quartz sandstone)
V. I. Vettegrena, R. I. Mamalimova, V. B. Kulika, A. V. Patoninb, A. V. Ponomarevc, G. A. Sobolevc, I. P. Shcherbakova a Ioffe Institute, St. Petersburg
b Borok Geophysical Observatory, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Borok, Yaroslavl oblast, Russia
c Institute of Physics of the Earth, Russian Academy of Scienses, Moscow, Russia
Abstract:
The structure of surface layers of quartz sandstone with a thickness of $\sim$1$\mu$m before and after destruction by a compressive stress is studied by methods of infrared, photoluminescent, and Raman spectroscopy. Before destruction, this layer contained quartz grains cemented with montmorrillonite and kaolinite. The grains are covered with a thin water layer and have crystallographic defects: Si–O$^{-}$, self-trapped excitons, AlOH and LiOH compounds, [AlO$_{4}$]$^{-}$ centers, etc. The destructed surface contains separate quartz grains with sizes of $\sim$2 $\mu$m and a reduced defect concentration. It is assumed that the defects reduce the strength of quartz grains, which are destroyed in the first turn.
Received: 08.12.2016
Citation:
V. I. Vettegren, R. I. Mamalimov, V. B. Kulik, A. V. Patonin, A. V. Ponomarev, G. A. Sobolev, I. P. Shcherbakov, “Structural analysis of the fracture surface of a heterogeneous body (quartz sandstone)”, Fizika Tverdogo Tela, 59:7 (2017), 1315–1318; Phys. Solid State, 59:7 (2017), 1340–1344
Linking options:
https://www.mathnet.ru/eng/ftt9521 https://www.mathnet.ru/eng/ftt/v59/i7/p1315
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