HARDENING OF COMPOSITE CONSTRUCTION MATERIALS BASED ON MAGNESIA BINDER AT VARIOUS TEMPERATURE CONDITIONS

Abstract

Modern construction production imposes stringent requirements to increase the speed of construction
that pushes on the extensive analysis of the hardening of concrete and mortar mixes in
terms of both positive and negative temperatures taking into account northern climatic conditions of
the country. This article is devoted to the problem of application promising composite materials on
the basis of magnesia binder and mineral aggregates in terms of real construction site. The results of
research of influence of initial curing of magnesia concrete and mortars in terms of positive and
negative temperatures of ambient air on the nature of the hardening and ultimate strength of the material
are given. Physical explanation of the kinetics of curing of magnesia binder in concrete and
mortars, initially sustained in conditions of negative temperatures, is considered.
Keywords: magnesia binding (Sorel cement), composite construction materials, ambient temperature.