The article investigates the possibility of producing rapid-hardening repair mortars based on gypsum–cement–slag binder (GCSB) using gypsum of various strength grades. The influence of mixture composition factors on the kinetics of strength development of repair mortars has been determined.Using methods of mathematical experiment design, a system of polynomial models was obtained that describes the relationship between the composition and the physical–mechanical properties of the repair mixtures at different curing ages. These models were applied to analyze the influence of formulation parameters on compressive and flexural strength. Duringoperation, concrete and reinforced concrete structures are exposed to aggressive environments, dynamic loads, and other destructive factors, which lead to deterioration and partial destruction of structural elements.This creates a significant demand for effective materials and technologies for the repair and protection of structures. Under the conditions of post-war reconstruction and general infrastructure recovery in Ukraine, the use of rapid-hardening dry repair mixtures enables faster and more efficient restoration of damaged buildings and structures, contributing to the improvement of living conditions and the economic revival of the country.The development and application of modern rapid-hardening repair mixtures based on gypsum–cement–slag binders represent an important step towards the modernization of Ukraine’s construction industry.
Author Biographies
O. O. Levchyk, National University of Water and Environmental Engineering, Rivne
Post-graduate Student
L. Y. Dvorkin, National University of Water and Environmental Engineering, Rivne
Doctor of Engineering, Professor
V. V. Marchuk, National University of Water and Environmental Engineering, Rivne
Candidate of Engineering (Ph.D.), Associate Professor
