PROSPECTS FOR THE USE OF ASH FROM TPPS FOR THE MANUFACTURE OF BUILDING MATERIALS

Authors

  • G. Koshlak Ivano-Frankivsk National Technical University of Oil and Gas https://orcid.org/0000-0001-8940-5925
  • A. Pavlenko Ivano-Frankivsk National Technical University of Oil and Gas

DOI:

https://doi.org/10.31471/2415-3184-2021-1(23)-92-101

Keywords:

TPP ash, waste, recycling, quality characteristics of ash, aerated concrete mixtures

Abstract

The article analyzes the problems of environmental pollution and promising directions for the disposal of waste from the production of coal-fired thermal power plants. Possible ways of managing solid waste from coal-fired power plants have been identified in order to preserve our environment. Potential possibilities of using ash in agriculture, in the design of the roadway, in the production of bricks, as an integral component in Portland cement are considered. The presence of valuable components in the ash creates undoubted prerequisites for its recycling. The authors carried out a study of the chemical composition, physical, mechanical and quality indicators of ash - waste products of the Burshtyn TPP to study the possibility of using it as a raw material in the production of building materials. It has been determined that according to the chemical composition of the fly ash of the Burshtyn thermal power plant (BuTPP), more than 70% consists of silicium and aluminum oxides. The assessment of the quality characteristics of ash was carried out by calculation with the determination of the basicity modulus, silicate modulus and quality factor. It was determined that BuTPP ash belongs to acidic, latently active. It is proposed to use ash as active mineral additives in raw mixes to obtain ash concrete. For this purpose, a study of the rheological characteristics of a mortar mixture of ash-cement porous concrete compositions was carried out, the influence of the composition of ash on the processes of hydration of cement components was investigated, and the quantitative characteristics of this effect were established. The strength of aerated concrete massif was determined depending on the type of raw mixture. The results obtained made it possible to develop technologies for replacing cement with ash in the composition of aerated concrete, to optimize its raw material composition; to determine the kinetic characteristics of hardening processes by introducing chemical additives NaCl and Na2SO4 to accelerate hydration processes.

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References

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Published

2021-07-08

How to Cite

Кошлак, Г. В., & Павленко , А. М. . (2021). PROSPECTS FOR THE USE OF ASH FROM TPPS FOR THE MANUFACTURE OF BUILDING MATERIALS. Ecological Safety and Balanced Use of Resources, (1(23), 92–101. https://doi.org/10.31471/2415-3184-2021-1(23)-92-101

Issue

Section

ENVIRONMENTAL PROTECTION TECHNOLOGIES