Efficiency of dispersed concrete hybrid fiber reinforcement with low-modulus fibers

Abstract

The article describes the results of experimental studies of the effect of low-modulus synthetic micro- and macro-fibers, taken separately and in combinations, on strength and durability of fiber-reinforced concrete. On the basis of the obtained data in fiber-reinforced concrete specimens testing for tension in bending, there were constructed diagrams of the deformation, according to which the influence of individual types of fibers and their combinations during hybrid reinforcement on the type of the destruction of composites was determined, the values of their power and energy characteristics were calculated. The effective ratios between the fibers during hybrid fiber-reinforcement have been determined, which makes it possible to obtain fiber-reinforced concrete with high strength and durability indicators.