Prospects for the Bottom Ash From Hydraulic Removal use if in Dry Building Mixtures. Part 1

At TPPs, in addition to fly ash and fuel slag formed in the boiler furnace, a large amount of ash and slag waste accumulates, which are removed by the wet method. The most promising direction for the use of ash and slag waste (ASW) is their involvement in secondary circulation in the production of building materials. Disposal of ASW from hydraulic removal from dumps is the most difficult due to the heterogeneity of their composition, properties, high pollution, etc. However, in recent years, there has been a growing interest in this waste from researchers and manufacturers, due to new opportunities for their processing and enrichment. The involvement of ASW in the production of dry mortar can lead to a large-scale reduction in their export to landfills and ash dumps. The paper presents the results of a study of the addition of an aluminosilicate component, released by flotation from the ASW of hydraulic removal, in dry building mixtures. The introduction of a dispersed additive allows you to control the properties and structure of the resulting modified stone. The presence of an amorphous nanoscale phase provides a compacted and strengthened structure of the composition. The evaluation of the effectiveness of the use of an aluminosilicate additive in the composition of the SSS confirmed the economic feasibility of the proposed approach to disposal.

V.B. PETROPAVLOVSKAYA¹, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.Yu. ZAVAD'KO¹, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.),
T.B. NOVICHENKOVA¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
K.S. PETROPAVLOVSKII¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.F. BURYANOV², Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ Tver State Technical University (22, Afanasiya Nikitina , Tver, 170026, Russian Federation)
² Moscow State University of Civil Engineering (129337, Moscow, Yaroslavskoe sh., 26)

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