A study of the rheological properties of self-compacting fiber reinforced concrete mixtures with additives of modifiers and microfillers and performance characteristics of concrete based on these mixtures has been carried out.
The most typical behaviour features of polymer nanocomposites filled with dispersed calcium carbonate were considered. The quantitative analysis was carried out within the frameworks of structural model: the cluster model of polymers amorphous state structure and fractal analysis. It has been shown that all changes of the considered nanocomposites properties were defined by polymeric matrix structure variations, which are due to nanofiller introduction.
The interfacial layer thickness and its elasticity modulus were determined experimentally for particulate-filled polymer nanocomposite. It has been found out that elasticity modulus of interfacial layer is 5 times greater than corresponding characteristic for bulk polymer matrix. It has been shown that the theoretical calculation of interfacial layer thickness within the frameworks of fractal model corresponds well to experimental data.