Russian Journal of Transport Engineering
Russian journal of transport engineering
           

2020, Vol. 7, No. 2. - go to content...

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DOI: 10.15862/07SATS220 (https://doi.org/10.15862/07SATS220)

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Ukrainskiy I.S., Kamenchukov A.V. Dynamics of strength set of artificial stone based on cement binder. Russian Journal of Transport Engineering. 2020; 7(2). Available at: https://t-s.today/PDF/07SATS220.pdf (in Russian). DOI: 10.15862/07SATS220


Dynamics of strength set of artificial stone based on cement binder

Ukrainskiy Ilya Sergeevich
Pacific national university, Khabarovsk, Russia
E-mail: 006012@pnu.edu.ru

Kamenchukov Aleksey Viktorovich
Pacific national university, Khabarovsk, Russia
E-mail: 006641@pnu.edu.ru

Abstract. The article discusses the existing theories of physical and chemical processes occurring in artificial stone based on cement binder, which affect the dynamics of strength gain. The mathematical model of continuously increasing strength of cement stone according to the logarithmic law is investigated. The authors have questioned the adequacy of the application of such theories in the study of the impact on the growth of strength of such measures as the use of surfactants, mineral additives, changes in the water-cement ratio, etc. The authors propose to investigate the influence of such factors on the dynamics of changes in the strength of cement stone as a whole. The main arguments of the theory of hopping strength set and destruction of cement systems are mentioned. To assess the relevance of the problem, the authors planned an experiment to construct curves for the dynamics of strength gain of artificial stone based on a cement binder. During the experiment, two batches of samples were tested with six series each. Samples were tested at the age of 3, 7, 14, 28, 56 and 84 days. The values obtained during the experiment showed significant differences in the early age of hardening. Based on experimental data, within the framework of the existing theory of strength set of artificial stone based on cement binder, theoretical curves of strength change over time were obtained. The simulation results were compared with the results of the experiment and with each other. Based on the results of the analysis of experimental studies and theoretical calculations, arguments for and against existing theories were put forward.

Keywords: cement stone; hydration of cement binder; adhesive bonds; hardening and destruction of cement stone; dynamics of strength growth of cement systems; logarithmic law of concrete strength growth; approximation of experimental data

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ISSN 2413-9807 (Online)

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