2025/06/24 by Borodai, E. T., Yegorova, E. V., Petrik, I. Yu. +2
#Portland cement #composite binder #fibreglass #frost resistance #heavy concrete #polypropylene fiber #thermal power plant fly ash #зола-уноса ТЭС #композиционное вяжущее #морозостойкость #полипропиленовая фибра #портландцемент #тяжелый бетон #фибробетон
paper · doi:10.71536/spgs.2025.v21n2.4
The article presents the results of a study of the effect of the amount of fly ash from thermal power plants in the composition of a composite binder on the performance properties of concrete reinforced with polypropylene fiber. The compositions of fiber-reinforced concrete are presented, which contain fly ash of 5, 10 and 15 % instead of the mass of cement, with a fiber content of 400, 500 and 600 g/m<sup>3</sup>, as well as with a superplasticizer additive in the range of 0,6–1 %. A study of the frost resistance of the developed composition of fiber-reinforced concrete was carried out. An analysis of the results showed that the frost resistance of samples of all fiber concrete compositions is higher than that of samples of heavy concrete of the control composition. The best results were shown by samples of formulations № 1, 2 and 5 with the maximum content of fly ash additives from the Zuyevskaya TPP and fibroblast. At the same time, for all formulations, the weight reduction of samples after testing does not exceed 2 %, which meets the requirements of GOST 10060-2012. Studies have shown that the introduction of fly ash from the Zuyevskaya thermal power plant into the fiber-reinforced concrete makes it possible to obtain concrete with high performance characteristics.