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In a research project funded by the Austrian Research Foundation (FFG) UHPFRC mixtures have been developed and optimized.Compression tests, uniaxial tension tests and several small scale four-point bending tests were performed and the full constitutive law was derived.A series of 10 UHPC beams with an I-shaped cross-section and a full length of 3.5 m was produced and subjected to four-point bending until failure.