Properties of Enriched Thermal Power Plant Ash from for High-Performance Concretes
N. M. Zaichenko, I. Yu. Petrik, V. N. Gubar
Donbas National Academy of Civil Engineering and Architecture
Annotation: The article presents the results of a study of the properties of enriched thermal power plant ash for high-performance concretes. In order to improve the characteristics of the thermal power plant ash that meet the technical requirements for replacing part of the cement in concrete, an electrostatic separation technology has been developed. This technology produces a material with a low unburned carbon content (loss on ignition 2,52 % in this study) for a high level of replacement of cement (45 % in the binder composition) in concretes. Enriched ash has an improved granulometric and phase composition and a reduced content of unburned carbon. The use of enriched thermal power plant ash in the composition of the binder instead of a part of the cement can provide an acceleration of the cement hydration process, an increase in the rheological properties of the cement paste, as well as the ability of the air-entraining admixture to retain the required volume of entrained air.
Keywords: thermal power plant ash, electrostatic separation, loss on ignition, phase analysis, foam index.
Pages: 157-165.
Link for citation: Zaichenko, N. M.; Petrik, I. Yu.; Gubar, V. N. Properties of Enriched Thermal Power Plant Ash from for High-Performance Concretes. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2022. – Vol. 18, N 4. – Р. 157-165. – URL: https://donnasa.ru/publish_house/journals/spgs/2022-4/st_03_zaichenko_petrik_gubar.pdf (date of access: 19.09.2024). (in Russian)
Vol. 18, N 4 (2022)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture