Features of the structure formation processes and synthesis of strength for Portland cement compositions modified with nanocarbonate additives

• Published in: IOP conference series. Materials Science and Engineering 2021-06, Vol.1164 (1), p.12062
• Main Authors: Pushkarova, K., Hadaichuk, D., Honchar, O., Kushnierova, L, Кaverin, К., Ionov, D.
• Format: Article
• Language: English
• Subjects: Additives; Appropriate technology; Artificial stone; Cement; Portland cements; Substrates; Synthesis
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/1164/1/012062

The work shows the results of studying the features of the structure formation process when nano-carbonate additives of different physical states are added to Portland cement and the establishment of the appropriate technology for their introduction, which provides the best conditions for the synthesis of artificial stone. It was found that the introduction of nanocarbonate additives in the form of dispersion provides better kinetics of the cement stone strength gain, and the effect of the introduction of dispersion exceeds the effect of the introduction of powder on 7th day by (43 … 48)%, on 28th day - (27… 30)% and 365th day by (25… 29)%. The using of the dispersion is more economically efficient, while preventing the aggregation of particles provides a directed synthesis of crystal-chemically similar compounds. The nanocarbonate additive acts as a substrate for the directional formation of hydrosilicate phases, providing microreinforcement and the formation of a more homogeneous and improved structure of artificial stone at both nano- and micro-levels.