Влияние параметров дисперсной фазы на тиксотропные свойства силикат-натриевых коллоидных смесей при получении строительных материалов

Abstract

The objective was to study the effect of the disperse phase parameters on the thixotropic properties of silicate-sodium colloidal mixtures and to develop technological recommendations for the production of building materials. To this end, liquid glass compositions were filled with various dispersity components to the maximum extent followed by monitoring of such rheological parameters as mixture mobility and formability. Formability was evaluated by the time of vibration moulding. It was found that filling a liquid glass with a dispersed filler to the maximum extent leads toa sharp decrease in the mixture mobility. In the case of vibration exposure, the mixtures under study exhibited thixotropic properties. The impact of filler dispersion on the rheological properties of filled silicate-sodium mixtures exhibiting colloid properties was established. It was theoretically substantiated that colloidal systems show reduced mobility in the oriented state of particles of the dispersion medium caused by the introduction of a filler. The obtained experimental results can be used as a basis for technological solutions in the development of materials with the required physical and mechanical characteristics. It was established that mixtures based on filled silicate-sodium compositions demonstrate colloid properties and, consequently, a specific rheology. The manifestation of thixotropic properties is determined by the structuring of the dispersion medium caused by adsorption processes of liquid glass particles on the filler grains. The effect of filler dispersity on the formability of mixtures was established. Technological recommendations for obtaining wall construction materials based on filled liquid glass compositions were form