Ultra-high speed X-ray imaging of dynamic fracturing in cementitious materials under impact - Lukić, B; Blasone, M; Duplan, Y; Forquin, P; Escauriza, E; Rutherford, M; Chapman, D; Eakins, D; Olbinado, M; Rack, A (Proceedings of the 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading (DYMAT 2021), 2021)