Influence of Alumina-Containing Additive on Cement Stone Hydration Processes
S. V. Sorokanich, A. V. Paramonova
SEI HE «Lugansk State University named after Volodymyr Dahl»
Abstract: This article discusses the influence of alumina-containing waste generated during the production of aluminum products – aluminum slag, on the processes of hydration of cement stone and its structure formation. Initial characteristics of alumina-containing additive of alumina slag are given, namely: chemical and particle size distribution, X-ray phase analysis data and X-ray images of cement stone samples with different concentration of alumina-containing additive of alumina slag. According to the X-ray phase analysis of cement stone with complex (AS + SP-1) additive of compositions No. 1, 2, 3, 4 and a control sample hardening for 1, 2, 3 days, changes in the intensity of diffraction reflections of the alite mineral were noted, which characterize the degree of hydration of Portland cement. At the same time, for samples of cement stone No. 1, 2, 3, 4, there is a decrease/increase in the intensity of diffraction reflections characteristic of the Portlandite mineral in comparison with the sample of the control composition. There is an increase in the intensity of diffraction reflections characteristic of calcium hydroaluminates in samples of compositions No. 1, 2, 3, 4 compared to the control sample. At the same time, there is a decrease in the intensity of diffraction reflections of the ettringite mineral. These data confirm the strength of the cement stone at different hardening times.
Keywords: additive – alumina slag, technogenic waste, hydration, structure formation, hardening, strength, cement stone.
Pages: 116-124.
Link for citation: Sorokanich, S. V.; Paramonova, A. V. Influence of Alumina-Containing Additive on Cement Stone Hydration Processes. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2023. – Issue 2023-1(159) Modern building materials. – Р. 116-124. – URL: https://donnasa.ru/publish_house/journals/vestnik/2023/2023-1(159)/st_15_sorokanich_paramonova.pdf (date of access: 15.10.2024). (in Russian)
Issue 2023-1 (159)Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture