Open AccessUse of bottom ash materials in the construction industry
Author(s) -
I. I. Aizenberg,
T. Koval
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/751/1/012001
Subject(s) - bottom ash , cinder , incinerator bottom ash , raw material , waste management , mineral wool , boiler (water heating) , thermal insulation , fly ash , building material , thermal power station , environmental science , engineering , civil engineering , materials science , coal , chemistry , organic chemistry , layer (electronics) , composite material
It is possible to use waste from the energy production of thermal and electrical energy, in the form of ash and cinder, as a substitute for natural mineral raw materials in the production of construction materials and products. Bottom ash, being a valuable raw component for the production of mortars, concrete and reinforced concrete, under certain conditions, provides a significant increase in the quality of the multicomponent matrix, and improves the construction, technical and thermal insulation properties of the finished product. Bottom ash from TPPs is an inexpensive construction material which increases the basic construction, technical and thermal insulation properties of the resulting construction products, which leads to a decrease in heat losses among consumers and, ultimately, to a decrease in the cost of housing under construction. This contributes to the implementation of the state programs “Affordable Housing” and “Low-Rise Construction”. One of the largest consumers of bottom ash mixtures could be road construction within the framework of the state program “Development of the Transport System”. Moreover, the use of bottom ash from TPPs is an indicator of the state of the art in power engineering and construction. However, there are a number of problems that one has to face when using bottom ash in industry, the main problem being unstable fractional composition and physicochemical characteristics that do not meet technical requirements. In their turn, the physicochemical characteristics of bottom ash from TPPs are formed in the course of conversion of the fuel mineral matter during combustion in boiler plants. Knowing the behavior of the coal mineral components during combustion, it is possible to solve the problem of choosing the optimal combustion modes for the production of bottom ash materials with the chemical and mineralogical composition required by consumers, while not reducing the efficiency of the boiler plant. Thus, TPP bottom ash is becoming a valuable mineral raw material - bottom ash materials for replacing nonmetallic materials in the construction sector.