Abstract
The fiber was made from an amorphous microwire of the Co69Fe4Cr4Si12B11 alloy in a glass shell of two sizes: diameter D = 17 and 50 μm, length is 7 and 15 mm, respectively. The influence of its geometric parameters, concentration (0.5—3%) and method of introduction on mobility, average density, bending strength and compression of cement systems (solutions) have been studied. The 54% increase in the flexural strength of the cement system was established in the case of its reinforcement with amorphous glass-metal fiber with D = 17 μm in an amount of 0.5% by weight of Portland cement and 22% one in the case of reinforcement with fiber with D = 50 μm in an amount of 1%. In this case, the compressive strength changes slightly. The introduction of fiber increases the crack resistance coefficient of the studied cement systems from 0.098 to 0.116—0.164.
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