Effective Fine-Grained Concrete with High-Dispersed Additive Based on the Natural Mineral Wollastonite
Micro-fillers based on natural mineral wollastonite, modifying fine-grained concrete and improving its physical and mechanical characteristics, are developed and studied. The influence of the most common stabilizers on the aggregate stability of wollastonite-based microdispersed systems in the aquatic dispersion environment is considered. The optimal parameters, ensuring the production of micro-fillers in the form of stable suspensions, are developed. The application efficiency of the wollastonite-based filler due to its micro-reinforcing properties is revealed. These properties are specified by the formation of needle-shaped crystals by the ultrasonic dispersion in the aquatic environment, chemically related to cement-containing raw materials and contributing to the active selective adsorption of the binder hydration products. It has a significant influence on the rheological parameters of cement composites, on structure formation, as well as on their strength and deformation properties.
Dr. Denis Solovev
E.G. Karpikov et al., "Effective Fine-Grained Concrete with High-Dispersed Additive Based on the Natural Mineral Wollastonite", Materials Science Forum, Vol. 945, pp. 85-90, 2019