Abstract
An integrated approach to the control of cracking processes and destruction of concrete, including the kinetics of crack growths depending on the duration and the magnitude of the external load is proposed. Based on the accumulated theoretical and experimental data it is determined that elastic and plastic deformations developed in the action under the action of the applied load due to the forming or development of different defects in concrete structures. The results of the experimental research to establish the strength and crack resistance parameters of fine-grained basalt fibrous concretes are presented. The values of strength changes with different indices of loading rate and kinetic characteristics of micro cracking, the activation energy and the effective activation volume were obtained. Development of different defects along with the destruction of concrete was investigated by indirect methods. The integral assessment of cracking processes and destruction of concrete allows defining the integral characteristics of materials under the impact of mechanical loads. For testing the experimental facilities with a wide range of concrete samples loading rates were used.
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