Table 4.

Deformative characteristics of quartz sandstone [7,8,9,10,11,12,13].

Characteristics	Unit	Values
Coefficient of thermal expansion, αT	1/°C	0.0000118
Abrasiveness, grade according to the Russian State Standard GOST 26633-2015 [27]	mg	IV, 18–30
Wear resistance, grade according to the Russian State Standard GOST 26633-2015 [27]	mm	III, 0.35–0.6
Impact strength, σ	MPa	306