The invention discloses an anti-penetration and anti-explosion
cement-based protective
engineering material and a preparation method thereof. The protective
engineering material is of a three-layer gradient structure made from very-high-performance
mortar of the same proportioning ratio, a bottom layer is made from
hybrid-
fiber reinforced very-high-performance
cement-based
composite material, a middle layer is made from large-mixing-quantity steel-
fiber reinforced very-high-performance
cement-based
composite material, a top layer is made from very-high-performance
mortar-grouted high-strength coarse aggregate concrete, and the interfacial adhesivity is good. The very-high-performance
mortar is prepared from cement, industrial residues,
nanomaterials, fine aggregates, an antifoamer, a high-performance water
reducing agent and water. According to the protective
engineering material disclosed by the invention,
hybrid fibers of the bottom layer can be used for improving the
toughness and
impact wave absorbing action of the structure and can also be used for improving
crack resistance and high-
temperature resistance; large-mixing-quantity steel fibers of the middle layer can be used for keeping the integrity of the structure and preventing
bursting; high-strength coarse aggregates are added into the top layer, so that the
penetration depth can be reduced, and the aim of anti-penetration and anti-explosion
coupling action is achieved.