Impact Resistance and Mechanical Properties of UHPFRC

Ultra-high-performance fibre-reinforced concrete (UHPFRC) is a comparatively new generation of fibre-reinforced composites that have been developed to give outstanding material performance than other types of concrete. Such superior properties have been achieved through the use of an optimized combination of its ingredients like cement, fine sand, microsilica, high range water reducing agent, low w/c ratio and fibres. A detailed study on the mechanical properties of UHPFRC, considering various important factors, is authoritative in order to obtain necessary information for its practical application. Therefore, present paper reviewed the mechanical properties and impact resistance of UHPFRC. It is examined whether (1) UHPFRC is able to absorb sufficient mechanical energy under impact loading than that of normal strength concrete with and without fibres; (2) the use of hybrid steel fibre (long + short) is effective in improving the impact resistance of UHPFRC compared to containing single type of fibres.