Abstract:Rubber powders of diameter of 380,180,120μm were mixed in 15,30,60,90,110kg/m3 to prepare rubber powder concrete(RPC). A quasi static compression experiment has been carried out by electro hydraulic servo universal tester; the dynamic compression experiment of RPC by use of a split Hopkinson pressure bar(SHPB) of diameter of 74mm under loading with 4 different waves has been carried out; the influence of the diameter and mixing amount of rubber powder on the static and dynamic mechanical properties of concrete has been investigated and the static and dynamic strength of PRCC has been analyzed. The testing result shows that the involvement of RPC has decreased the pressure resisting properties of the concrete and with the increase of mesh of the rubber powder, the strength of RPS decreases continuously; the strength of concrete all decrease with the increase of mixing amount and the decrease scale reaches the highest value when the mixing amount is 110kg/m3; toughness of RPS has been strengthened and the damage form has shifted from fragile damage to that with certain plasticity; RPC has shown obvious strain rate strengthening effect, that is to say, the dynamic peak value stress also increases with the increase of strain rate and DIF increases with increase of strain rate; both the dynamic peak value stress of RPC and its increase speed increase with the increase of diameter of RPS and the greater the mesh of RPC, the greater the dynamic indicator:the dynamic peak stress decreases with the increase of mixing amount while its DIF increases with the increase of mixing amount.