Study of the Influence of Modified Additives on the Properties of Concrete

Abstract

The problem of improving the efficiency of the quality of concrete and reinforced concrete is a promising direction that cannot be fully realized without the use of chemical additives. Additives are considered a simple way to improve the performance of a cement composite; they allows to reduce the amount of binder and regulate the technological characteristics of the concrete mixture and the physical and mechanical properties of the material, as well as increase the durability of buildings and structures. Currently, a large number of additives are used, introduced into concrete mixtures, which are classified according to their mechanism of action, chemical composition and other characteristics. The purpose of this research was to optimize the compositions of concrete with additives in terms of strength and deformability. The object of the study is fine-grained concrete produced on a cement binder using various modifying additives, for which modifiers such as «Advance Ultra», «Superplast Prima», «Superplast Standard» have been studied. The studied parameters were the compressive strength and elastic modulus of fine-grained concrete. It was revealed that the introduction of modifying additives helped to increase the studied indicators. At the same time, the greatest increase in strength and elastic modulus is achieved when using the Advance Ultra plasticizer