Dynamic Split Tension and Energy Dissipation of Fiber Concrete Under Impact Loading Effect

This paper introduces a test for the dynamic split tension of fiber concrete.The dynamic-split-tension test, which used a Hopkinson bar, was performed for plain concrete, steel fiber concrete, and polypropylene fiber concrete.Test phenomena were described and analyzed.The effects of different fiber contents and strain rates on fiber-concrete split-tension strength were explored.The energy-dissipation characteristics of fiber-concrete dynamic split tension and the destruction mechanism were examined to determine the relationship between energy dissipation and releasable strain energy at high strain rates.The energy composition of fiber concrete was identified.