IMPACT RESISTANCE OF STEEL FIBER REINFORCED CONCRETE

Concrete used in civil engineering structures, such as bridges in seismic areas and airport runways, must have adequate resistance to impact and impulsively applied loads. Unfortunately, the behavior of concrete to impact loads is not well understood and there is significant variability in the published literature. The main reason for this is the lack of a standardized technique of testing concrete under impact. This paper describes the construction of a simple impact machine capable of carrying out impact tests on concrete in uniaxial tension. Impact data for normal-strength, medium-strength, high-strength, and fiber reinforced concrete is presented. Researchers demonstrate that the machine can generate rational impact data for various concretes tested and that the data can be useful in design.