Abstract
Concrete and reinforced concrete are currently used for the construction of buildings and structures. At negative temperatures, the hydration of the binder slows down and the solidification of mortars proceeds quite slowly, and the strength set of mortars and concrete mixtures stops. As a result, to ensure a set of strength in winter conditions, it is necessary to introduce antifreezing chemical additives into the mortars, which contribute to the normal flow of cement hydration processes. In this regard, the urgent task is the correct and rational choice of raw materials, which directly affect the durability and reliability of concrete and reinforced concrete products and structures. Therefore, in the course of research, most of the time is devoted directly to the study and selection of raw materials for the preparation of concretes and mortars. It is impossible to achieve the necessary durability of concrete without introducing chemical additives into its composition. The paper presents a study of antifreezing additives that positively affect the properties and durability of concrete and mortars and work effectively in conditions of negative temperatures. Optimal dosages of the studied additives were determined and the influence of new types of additives on the strength characteristics of concrete and mortars was studied.
