J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 1145-1151
Fracture behaviour of High Performance Concrete (HPC) investigated with a Hopkinson-BarH. Schuler1 and H. Hansson2
1 EMI Fraunhofer-Institute for High-Speed Dynamics, 79588 Efringen-Kirchen, Germany
2 FOI Swedish Defence Research Agency, 147 25 Tumba, Sweden
Published online: 26 July 2006
This paper describes the measurement of the tensile strength and the fracture energy of High Performance Concrete (HPC) at high strain rates between 10/s and 100/s. Therefore a Hopkinson-Bar is modified in order to perform spall experiments. The spall strength is determined from the pull-back velocity at the free end of the specimen. The fracture energy is calculated from the dissipated energy while crack opening takes place. The paper provides Dynamic Increase Factors (DIF) for the tensile strength and the fracture energy of HPC.
© EDP Sciences 2006