Abstract
The presence of reinforcing fibers in concrete in terms of their optimal content increases density, uniformity and reduces the risk of cracking which allow predicting the increased dynamic resistance, frost resistance, abrasiveness and durability of both cement and asphalt concrete. This article presents the results of experimental studies of the physical-mechanical properties of cement and asphalt concrete reinforced with basalt fiber during which technological indicators of impact on the strength and durability of concrete (fiber content in mixtures, the ratio of fiber length to the size of the largest coarse aggregate) were selected, statistical analysis and optimization of the research results. To justify the choice of basalt fiber, the results of research on the determination of its chemical composition of the fiber and physico-mechanical characteristics are shown. The optimal sizes of basalt fiber, which is introduced into the mixture, are also determined. It was concluded under what conditions the studied characteristics of concrete reinforced with basalt fiber reach their maximum value with the corresponding ratios of technological indicators.
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