Effect of the mass fraction of ice on the strain rate dependence of strength under dynamic fracture of frozen soil

Experimental dependences of the strength of frozen sandy soil on strain rate are analyzed using a structural-temporal approach. Results of dynamic uniaxial compression tests at a temperature of -18$^\circ$C and strain rates of 400 to 2600 s$^{-1}$ of frozen sandy soil samples of two types with a mass fraction of ice of 10 and 18% measured at room temperature are presented. The strain rate dependence of the at different temperatures of freezing of frozen sand with a mass fraction of ice of 30% was studied using known experimental data.