Mixed Binders with the Use of Volcanic Ash

Abstract

The most promising direction in modern science and construction is the creation of new effective mixed binders with specified properties. In recent years, there has been a significant increase in interest in the use of natural and technogenic products as components of mixed binders, the use of which is promising and relevant. This article presents the results of research on the production of mixed binders using volcanic ash from the Kenzhensky Deposit of the Kabardino-Balkar Republic in a vibrating mill, and the features of their grinding are established. Mixed binders were obtained at different ratios of cement and volcanic ash. The features of grinding and microstructure processes are studied, and the technological and physical and mechanical properties of the obtained binders are determined. The combined activation of mixed binders based on cement and volcanic ash in amount of 10% increases the compressive strength by 23%, and when using 20% of ash increases the strength by 22%, with significant savings of Portland cement up to 20%. The results obtained indicate the influence of the granulometric composition of mineral filler and cement in mixed binders on the formation of their physical and mechanical indicators.