In this study, some mechanical properties of polystyrene concrete have been investigated, by destructive and nondestructive method. The experimental results of nondestructive test were correlated with compressive strength, tensile strength, flexural strength, impact strength and crack patterns. The test result showed that the mechanical properties of concrete improved with addition of polystyrene up to 1/3 (percentage cement /Polystyrene). On the other hand, increasing polystyrene to cement ratio was found to increase flexural strength and abrasion resistance for concrete.