Fracture energy of concrete was measured for studying the fracture brittleness of the high performance concrete mixed ground granulated blastfurnace slag (GGBFS) and silica fume.

The fracture strain energy density at the high strain rate is mainly determined by the initial elastic modulus and the unstable strain and affected by the temperature and the strain rate.

On the basis of a lot of field experiments, this paper proposes a synthetic and practical mathematical-physical model of High Energy Gas Fracture h.