Ultra High Performance Fiber Reinforced Concrete (UHPFRC) is characterized by a compressive strength in the range of 200 MPa as well as by improved durability properties compared to normal strength concrete. The addition of short steel fibers influences the behavior of UHPFRC positively, but to attain ductile failures conventional reinforcement still is required. The mechanical properties of UHPFRC have been widely studied. However, in practical application UHPFRC is quite unexplored. Therefore, the deformation behavior of UHPFRC tension ties reinforced with conventional as well as high-strength steel has been examined. In this paper the results of an experimental study are presented. Based on these, an analytical model is developed which enables the calculation of the cracking and deformation behavior of such elements. The overall aim of this research is to develop reliable methods for the conception and design of structural members made of UHPFRC.
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