Efficient reception of introducing basalt fiber in cement matrix of fiber concrete

Tashkent State Transport University, Tashkent, Uzbekistan

^* Corresponding author: erkinmah@mail.ru

Abstract

The article is devoted to solving the problem of the distribution of basalt fiber in the environment of the filled cement paste and the total volume of basalt fiber-reinforced concrete, which is one of the most important in the preparation of basalt fiber-reinforced concrete. This article presents the results of experimental studies to establish the most effective technological method of introducing basalt fiber into the cement matrix of the composite from the point of view of increasing the strength characteristics of fiber-reinforced concrete. In the experimental studies performed, standardized methods for the study of cement paste and stone were used. As a result of the research, graphical dependences of the strength and water demand of a dispersed-reinforced cement stone on introducing basalt fiber into the composite and the quantitative content of basalt fiber in the composite were obtained.

The analysis of the obtained results made it possible to establish that of the various methods for introducing basalt fiber into the cement matrix of basalt fiber-reinforced concrete, the most effective in terms of increasing the strength of the composite material, provided that the water demand of the fiber-reinforced concrete mixture remains unchanged, is preliminary dry mixing of cement with basalt fiber in a spring mill. The most favorable environment for the mechanical activation of basalt fiber in a spring mill has also been established, which makes it possible to achieve high rates in terms of the preservation of basalt fiber during joint grinding. The scientific novelty of the performed research lies in the fact that the issue of studying the distribution of basalt fiber was first studied at the level of the microstructure of basalt fiber-reinforced concrete.