Bending and shear behavior of ultra-high performance fiber reinforced concrete

This paper presents the experimental research regarding the physical-mechanical properties and the bending and shear behavior of the ultra high performance concrete. The cementitious composite with 2% volume of steel fibers was tested for the following characteristics: the compressive and tensile strength, the stress-strain characteristic curve for compression strength and flexural strength. Furthermore, a series of reinforced elements were tested and analyzed in terms of maximum crack width, deformations and maximum compressive strain. The specimens subject to 90 degrees C thermal treatment for 5 days displayed an increase of compressive strength up to 180 MPa at the age of 6 days. The experimental data obtained on specimens with a thermal curing regime are evaluated by comparison with specimens with a water-curing regime.