Reinforced concrete compressed elements with a small eccentricity and methods for calculating their strength are considered. A method for determining the deformation of the longitudinal reinforcement furthest from the longitudinal force is proposed. At the same time, the use of a single formula for s is ensured during the transition from an alternating deformation plot to an unambiguous one. Empirical dependence is used to determine the height of the compressed zone, which avoids solving the quadratic equation. In elements with a small eccentricity, symmetrical reinforcement is used, for this case the equation of equilibrium of longitudinal forces is derived.
The results of the study of the strength of slag-alkaline concrete depending on the amount of activator are presented. As an activator of slag-alkaline binders, the waste of caprolactam production of the Chirchik plant "Electrochemprom" was investigated. The best results were shown – ground granular phosphoric slags in a composition with an activator - sodium sulfocarbonate, which is recommended to be used to strengthen soils. The required strength class of soils can be obtained by adjusting the amount of slag, sulfocarbonate, as well as using various technological techniques.
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