Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities

The use of fiber in cement materials is a promising and effective replacement for bar reinforcement. A wide range fiber-reinforced concretes based on composite binders with increased impact strength characteristics have been developed. synthesized composites included the binder made Portland cement, silica, carbonate additives. Basalt steel were used as fibers. nature influence composition manufacturing technology dynamic hardening coefficient has established, while growth these indicators achieved by creating denser interfacial transition zone between paste, aggregate, result improving homogeneity concrete mixture controlling consistency. Workability (slump flow up to 730 mm; spreading time diameter 50 cm 3 s) allow them be classified self-compacting mixtures. An increase values factor 5.5, almost 70% interaction fibers matrix composite, well absorption energy fiber, was revealed. formula describing effect loading rate refined. fracture processes obtained established: after initiation primary cracks, structure absorbs long time, inelastic (the onset cracking peak loads), large number secondary cracks appear.