The paper considers problems related to the assessment of the effect of loading rate on mechanical properties of concrete and reinforcing steel. The attention is focused on the evaluation of varying straining rate of RC structure subjected to explosive loading. The key problem considered in the paper is the derivation of the relation between the rate of pressure increase and incident overpressure. The paper considers approaches to modelling the influence of straining rate on mechanical properties of concrete and reinforcing steel. The main conclusion following from the paper is that the deterministic models used for the assessment of effect of straining rate on the mechanical properties of concrete and reinforcing steel and models used for modelling of incident overpressure are fairly imprecise and require for the stochastic modelling of this phenomena. 

Article in English