Article

Received 19.10.2023

Revised 24.02.2024

Accepted 27.03.2024

Retrieved from Iss. 115, P. 1, 2024

Pages 49 -56

Sokolov, O. (2024). DETERMINATION OF MODULUS OF ELASTICITY OF ASPHALT CONCRETE WITH FLY ASH USING THE WITCZAK MODEL. Automobile Roads and Road Construction, (115.1), 49-56. https://doi.org/10.33744/0365-8171-2024-115.1-049-056

DETERMINATION OF MODULUS OF ELASTICITY OF ASPHALT CONCRETE WITH FLY ASH USING THE WITCZAK MODEL

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 predicted modulus of elasticity of asphalt concrete with different fillers. Materials and methods. During the research, fly ash from the Burshtyn TPP and limestone mineral powder from the Skalo-Podilsky special quarry were used. The results. It was established that the modulus of elasticity of asphalt concrete with fly ash is greater than that of asphalt concrete with limestone filler. Conclusions. The use of fly ash due to the improvement of compaction of the asphalt concrete mixture allows not only to reduce the content of bitumen in the composition of the asphalt concrete mixture, but also to increase the modulus of elasticity of asphalt concrete

mineral powder, ash removal, ecology, modulus of elasticity, asphalt concrete
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https://doi.org/10.33744/0365-8171-2024-115.1-049-056