Review article

The article considers the efficiency of using flax fibers as a reinforcing component in comparison with polymer and coconut fibers in the context of the influence on the rheological and mechanical properties of fine-grained concrete. There have been determined patterns of change in the density and mobility of the concrete mix depending on the type of fibers used and their concentration. Compressive strength tests for specimens with different fiber types and fiber concentrations showed no significant differences. When testing the three-point bending strength at the age of 7 and 28 days, there was found out an increase in the strength characteristics of fiber concrete with the introduction of flax fiber relative to compositions with other types of fibers.