Some features of the mechanism of action of organo-mineral modifiers on cement systems

Authors:  
Rubric:     Theoretical and experimental studies   
Annotation:
Some special features of the mechanism of action of ogano-mineral modifier on cement systems at early stages of structure formation. The research results of the effect of modifiers and their components on cement system characteristics, i.e. viscosity, setting time, the kinetics of plastic strength growth and heat release, are presented. It is shown that the colloidal-chemical and physical phenomena, based on a slow and portioned delivery of the organic component (superplasticizer) into a liquid phase of hydrating cement systems, and the saturation of cement systems with silica fume and fly ash, allow to control the rheological properties of concrete mixtures and directionally modify the structure of the cement paste.