Impact response of fibre reinforced concrete
Abstract
Fiber reinforced concrete have for long been researched to better find its possibilitieswithing concrete structures. Today fibre reinforced concrete is mainly used for slabsresting on the ground, or as thin shotcrete. In some cases the fibre replaces thetraditional reinforcement completely, and can reduce costs on project considerably.With further investigation fibre reinforced concrete could possible replace traditionalreinforcement partial, while improve its mechanical behavior and durability. Bridgepiers are exposed to many different accidental loads, such as vehicle impacts,explosions, and barge collision. The bridge structure must be designed to handlethis types of load, and its impact response is an essential part of understating theforces acting on the pie.
In order to determine the piers response, scaled down laboratory experiment areperformed, as building a full scale is inefficient. Pendulum test were performed onthree 100x100x1500mm concrete column, with a fiber dosage of 0.0%, 0.5% and1.0%. The results from the impact test together with the mechanical propertiesof the basalt fibre reinforced concrete were used to develop a numerical model, tosimulate the laboratory test. The accuracy of the model is determined by comparingthe experimental results with the numerical results.