Prospects for the bottom ash from hydraulic removal use if in dry building mixtures. Part 2

Improving the quality of construction gypsum mixtures will be determined by a number of their advantages, which determine their performance characteristics. This makes it possible to solve a number of problems related to creating a comfortable living environment, reducing the carbon footprint, ensuring energy efficiency of construction technologies and constructed facilities without damaging the environment. These problems can be solved by recycling waste from thermal power plants and products based on them in the production of modified gypsum general construction mixtures. The article examines the possibilities of using activated carbon fractions isolated from hydraulic ash waste to improve the performance properties of gypsum dry building mixtures. An overview of existing methods of using ash and slag waste in the production of binders and their disadvantages is presented. The need for innovative methods for assessing and selecting the granulometric composition of modified mixtures is substantiated. The granulometric composition of the original gypsum binder and isolated carbon fractions, which have a special internal structure, are studied. Experimental results show that modified gypsum mixtures with a carbon modifier and a selected granulometric composition provide high quality materials based on them. The work represents a valuable contribution to the use of carbon fractions of hydraulic ash waste in the production of building mixtures, opening up new opportunities for the effective processing of ash and slag waste from thermal power plants and protection from man-made pollution of the natural environment.