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The aim of the study is to increase the resistance of polystyrene concrete obtained from secondary polystyrene to shock dynamic loads. The issues of polystyrene concrete resistance to compression forces with increasing load are considered. It is proposed that in terms of impact resistance, polystyrene concrete can be attributed to viscous materials capable of extinguishing large energy shock loads. When used as a Na2SO4 hardening accelerator, polystyrene concrete samples can absorb impact energy of more than 178.5 J.
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