Road Concrete Containing Coal Ashes of Thermal Power Stations Located in Krasnoyarsk : научное издание

Vasilovskaya Galina V.; Berseneva Maria L.; Yakshina Alexandra A.; Servatinsky V.V.; Bogdanov Igor Ya.

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База данных: Каталог библиотеки СФУ

Библиографическое описание: Road Concrete Containing Coal Ashes of Thermal Power Stations Located in Krasnoyarsk : научное издание / Galina V. Vasilovskaya, Maria L. Berseneva, Alexandra A. Yakshina [и др.]. - Текст : непосредственный // Key Engineering Materials. - 2020. - Т. 839, № . - С. 160-165. - ISSN 1662-9795, DOI 10.4028/www.scientific.net/kem.839.160.

Аннотация: The paper reports on outcomes of research into a road concrete containing coal ash powders of thermal power stations located in Krasnoyarsk. The study was focused on characteristics of a fly ash, and ash taken in an ash-disposal area of Krasnoyarsk Thermal Power Station 1, as well as ash of Beryozovskaya GRES. To compare characteristics a standard limestone powder was used. Physical and mechanical characteristics, chemical and mineral composition of these powders were analyzed. Mineral powders differed in a concentration of free calcium oxide (СаОfr.). Samples of a fine-grained road concrete were composed and prepared using materials above. Physical and mechanical properties of formed road concrete samples were tested. A coefficient K was introduced to assess the relation between key characteristics of a road concrete mix and concentration of free calcium oxide, furthermore, it considers a percentage of СаОfr. in ash (m) and percentage of this ash in a road concrete (n), i.e. К= m·n. It has been established a coefficient К ranging 0 to 32 СаОfr. has no significant effect on characteristics of a road concrete mix. A fly ash and ash taken in an ash-disposal area of Krasnoyarsk thermal power station 1 are recommended for the use in industry as a mineral powder in a road concrete mix. Additionally, ash taken in an ash-disposal area is to be dried and grinded, a maximal content of a fly ash in a road concrete mix is estimated to be 4% provided that a concentration of СаОfr. is less than 8%.

Год издания: 2020

Авторы: Vasilovskaya Galina V., Berseneva Maria L., Yakshina Alexandra A., Servatinsky V.V., Bogdanov Igor Ya.

Издательство: Trans Tech Publications, Ltd.

Источник: Key Engineering Materials

Выпуск: Т. 839

Номера страниц: 160-165

Количество экземпляров:

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