Modification of cement composites by oligomeric products of bicomponent composition

Abstract

Application of complex chemical additives of different composition and functional purpose allow improving technological construction and technical properties of composite construction materials, including cement concrete and soil cement compositions. It is considered are relevant the development of organic mineral supplements additives with various hardness activator which extend wide range of effective modifiers a improve the desired properties of the concrete compositions. In the study we studied how the system is formed interpolymer complexesof bicomponent composition modifier was studied which consisted of a mixture of acetonformaldehyde (ACF-75), ureaformaldehyde resins (UFR) features of structural connections and influence on nature of hydration processes of cement systems and influence on the nature of hydration processes of cement systems. The results of the study showed the effect of regulating rheological properties at the initial stages of cement stone hardening and participation in formation of its structure depending on functional structure of molecules. Creation of intermediate products due to reactive groups in ACF and UFR compositions, the resin in combination allows effective control of the process speed their curing both in alkaline and acidic environments.