Experimental study on impact behaviors of a new kind of pavement material for concrete bridge deck

Impact tests of a new kind of pavement material for concrete bridge deck, steel fiber reinforced and polymer modified concrete (SFRPMC), were carried out by using a large cross-section SHPB system. The impact behaviors of the new material were compared with those of plain concrete and steel fiber reinforced concrete under the same basic mixture ratio. After tests, the destructive behaviors of the three materials were observed and their stress and strain relations at different strain rates were measured. The sensitivities of strain rate of three materials were compared. The mechanism of influences of steel fiber and polymer additions on the dynamic mechanical behavior of concrete was analyzed. Results show that SFRPMC has good impact properties, and it is one of the ideal pavement materials.