Abstract
The dynamic characteristics of steel fibre reinforced concrete (SFRC) have been obtained through 75 mm diameter split Hopkinson pressure bar (SHPB) tests. In order to understand the intrinsic dynamic behaviour of the material, this paper reviews the SHPB testing technique, and presents the principles and limitations of the equipment. Using a linear-shaped striker bar, a half-sine incident loading waveform is generated which eliminates attendant problems such as non-uniform stress distribution and wave oscillation. Following the verification of the SHPB equipment, a number of dynamic uniaxial compression and tension splitting tests were conducted on SFRC specimens. The influence of strain rate on the response of SFRC specimens is presented. Results indicate that dynamic uniaxial compressive strength of SFRC increases moderately at relatively high strain rate, and the tensile splitting strength increases many times at moderate strain rate loading compared with its static value. Further, the stress–strain relationship of SFRC does not exhibit the ductility that is evident when the material is tested at static load condition.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
