High-Strength Fiber-Reinforced Concrete in Structures for General Construction and Special Purposes

It is shown that increasing the durability of particularly strong structures of buildings and protective structures of civil defense is the main task for today. It is proved that the use of high-strength composites with dispersed reinforcement based on combined binders requires solving a number of problems. Man-made raw materials, including slags of metallurgical production, are involved in the composition of fiber-reinforced concrete. The problem of the quality of fiber-reinforced concrete is considered, taking into account the initial composition, conditions for the preparation of a concrete mixture, molding and hardening of products. As components of high-strength dispersed reinforced concrete, finely dispersed filler – additives with high activity based on man-made waste in combination with hyperplasticizers and reinforcing fibers are proposed. A solution is proposed to improve the quality of the front surface to classes A1–A2. It was established that due to the optimization of the compositions, the consumption of the clinker component of the binder was reduced by 20% without loss of physical and mechanical properties and increased strength indicators by more than 20 MPa. Due to the use of dispersed reinforcement, the tensile strength of concrete in bending was increased by 15%. At the same time, basalt fibers as a reinforcing component showed better joint work with cement stone.

R.E. AGAMOV, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.A. GONCHAROVA, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.R. PACHIN, Master (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Lipetsk State Technical University (30, Moskovskaya Street, Lipetsk, 398055, Russian Federation)

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