Article

Received 05.02.2024

Revised 19.05.2024

Accepted 30.06.2024

Retrieved from Iss. 115, P. 2, 2024

Pages 163 -169

Sokolov, O. (2024). DETERMINATION OF ADHESION OF BITUMEN TO FLYING ASH. Automobile Roads and Road Construction, (115.2), 163-169. https://doi.org/10.33744/0365-8171-2024-115.2-163-169

DETERMINATION OF ADHESION OF BITUMEN TO FLYING ASH

Oleksii Sokolov

In Ukraine, about 30% of all electricity is produced by burning solid fuels - coal, shale, and peat. In our country, there are about 15 operating thermal power plants, which generate about 5-6 million tons of ash and slag waste as a secondary product per year. Thus, the waste of the fuel and energy complex, which is formed in the furnaces of thermal power plants, is a huge accumulation of ash in the form of dust-like residues and lumpy sludge, as well as various ash-slag mixtures. These products of high-temperature processing (1200-1700 ºС) of the mineral part of the fuel are widely used in many countries of the world, and taking into account the global trend of increasing the share of the secondary market for the use of waste, it is necessary to predict an increase in the rate of their processing in Ukraine as well. Problems. In Ukraine, as a filler, the material obtained by crushing carbonate rocks is used as a filler, which is established in DSTU B B.2.7-121. At the same time, as a result of burning coal, millions of tons of dust-like waste - fly ash - are generated at power-generating enterprises of Ukraine. In terms of indicators, this material approaches the requirements for filler according to DSTU B V.2.7-121 and can be used for the production of asphalt concrete mixtures. The purpose of the work is to compare the adhesive activity of different fillers by the method of determining water resistance. Materials and methods. During the research, fly ash of various origins and mineral powder of limestone from the Skalo-Podilskyi special quarry were used. The results. It has been established that the adhesive activity of bitumen with fly ash practically does not change the adhesive properties of bitumen with limestone filler. Conclusions. Due to the use of fly ash, it is possible to reduce the price of asphalt concrete mixtures, which will lead to a decrease in the cost of asphalt concrete, as well as reduce the amount of waste from electricity generating enterprises

mineral powder, ash removal, ecology, adhesion, bitumen, asphalt binder
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https://doi.org/10.33744/0365-8171-2024-115.2-163-169