Anisotropy properties of the quartzite from Jegłowa, Poland
Authors
Tomasz Marciniszyn
Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, PL-50-370 Wrocław
Adam Sieradzki
Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, PL-50-370 Wrocław
Keywords:
Quartzite anisotropy, Thermal conductivity of quartzite, Thermal expansion of quartzite
Abstract
Results of the dielectric spectroscopy, thermal and dilatometric measurements of the quartzite rock are presented. Based on the dielectric measurements performed in a wide range of the frequency (101– 5 · 107Hz) at temperature of 300K the piezoresonance in quartzite was found. A chemical composition of quartzite was examined by XRF. The anisotropy of the thermal conductivity was observed. The thermal conductivity coefficient changes from 13.2 [W/Km] to 5.6 [W/Km] for the [100] and [001] direction, respectively. Based on the thermal expansion measurement the thermal expansion coefficient of quartzite was estimated to be α Q = 8.0 · 10-6 [K-1] ±0.7 · 10-6.
