Kolesnikov A. Highly filled heat insulating plaster compositions

The object of research - the impact of matrix components, filler and structure-forming additives on the structure and properties of the gypsum composite. The purpose of the study - the improvement of heat-shielding, acoustic and adhesive properties of highly filled gypsum plaster compositions by the targeted organization of structure and compromise optimization of composition. Research Methods - conductivity and volume measurement, computer microscopy, the method of non-stationary heat flow, computer sound ranging, pull-off adhesion tests, standard methods for assessing the quality of plaster mixtures, obtaining an experimental-statistical models (ES models) of multi-component composition, properties and structure of the material, methods of multicriteria optimization. Results - new approach to the design of highly heat-insulating composites proposed based on percolation theory, formed the concept of functionally-optimal structure of the material and its implementation through the introduction of structure-forming additives and the selection of particle size distribution of the components, described and analyzed the overall impact of perlite, microspheres of metakaolin, latex plasticizer on the strength, thermal conductivity, acoustic permeability and other characteristics of the of gypsum composite, proposed and studied the statistical characteristics of the pore structure of the material, described statistically dependence of material properties on the porosity characteristics, suggested the physical-geometrical and fractal models of the functionally optimal material structure. Implementation - with the release of plaster mixtures reduced cost.