Study of the processes of formation of the structure and strength gain of nanomodified cement systems during long-term hardening

Keywords: Cement systems, SiO2 nanoparticles, Carbon nanotubes, Structure formation, Long-term hardening, Compressive strength


The study investigated the influence of nanoscale admixtures on the structure formation and strength characteristics of cement systems during their hardening with a duration of up to ten years. The study of the processes of structure formation of modified cement systems showed that there is a significant acceleration of the process of cement hydration during the early period of hardening, despite the decrease in water content. It was established that phase transformations and changes in phase composition in all systems were observed throughout the entire studied hardening period. At the same time, in the later stages of hardening, the appearance of stable hydrate new formations (xonotlite, afwillite, ettringite), capable of
creating a lower-dimensional, dense and homogeneous structure of nanomodified cement stone was observed. This provides nanomodified cement systems with high compressive strength values (Rcom) both during the early and long stages of hardening. At the same time, the highest strength indicators throughout the entire study period (Rcom = 85 MPa, with a hardening duration of 28 days and Rcom = 157 MPa, with a hardening duration of 10 years) was characteristic for the cement system modified with a complex nanoscale admixture based on SiO2 particles


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Author Biographies

Olga V. Artamonova, Voronezh State Technical University, 20 letiya Oktyabrya str., 84, Voronezh 394006, Russian Federation

Dr. Sci. (Tech.), Associate Professor, Professor at the Department of Chemistry and Chemical Technology of Materials, Voronezh State Technical University (Voronezh, Russian Federation)

Maria A. Shvedova, Voronezh State Technical University, 20 letiya Oktyabrya str., 84, Voronezh 394006, Russian Federation

Cand. Sci. (Tech.), Research Fellow at the Higher School of Building Materials Science (Academy of Building Complex Development), Voronezh State Technical University (Voronezh, Russian Federation)


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How to Cite
Artamonova, O. V., & Shvedova, M. A. (2024). Study of the processes of formation of the structure and strength gain of nanomodified cement systems during long-term hardening. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 26(2), 204-212.
Original articles