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

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DOI: 10.15862/16SATS220 (https://doi.org/10.15862/16SATS220)

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Chernykh D.S., Pakin M.N. Modeling of compositions and predicting properties of modified mixtures for rough thin-layer coatings. Russian Journal of Transport Engineering. 2020; 7(2). Available at: https://t-s.today/PDF/16SATS220.pdf (in Russian). DOI: 10.15862/16SATS220

Modeling of compositions and predicting properties of modified mixtures for rough thin-layer coatings

Chernykh Dmitriy Sergeevich
Don state technical university, Rostov-on-Don, Russia
E-mail: chdmitriy@nm.ru

Pakin Mihail Nikolaevich
Don state technical university, Rostov-on-Don, Russia
E-mail: nobodyone23rus@yandex.ru

Abstract. In recent years, the approach to experimental and statistical research and optimization of complex multicomponent systems has changed radically. In various fields of scientific and technical research, methods of mathematical planning of experiments are successfully used. Their wide application significantly increases the effectiveness of research, as well as proves their universality and suitability in most studies of building materials.

As a result, the authors present a method of mathematical planning of the experiment, which is used to optimize the composition and properties of modified mixtures for rough thin-layer coatings. This method allows a fairly complete and comprehensive assessment of the effect of components on the properties of modified mixtures and to obtain a mathematical model of the process in graphical form, as well as to obtain a theoretical model for evaluating and predicting the physical, mechanical and operational properties of the materials under study.

In this article, the first stage of research was used to select the percentage of binder, hydrate lime and additives, and also studied the influence of the variation factor of these components on the physical and mechanical properties of the mixture. At the second stage, changes in response functions were investigated.

The results of a complete three-factor experiment allowed us to establish rational ranges of values of the studied components in order to obtain mixtures for rough concolay coatings with optimal values of physical, mechanical and operational parameters.

Keywords: modified mixtures for rough thin-layer coatings (SHTP); mathematical planning of the experiment; water saturation (W; %); compressive strength at 0°C (R0; MPa); water resistance coefficient (Kvod); compressive strength at 50 °C (R50; MPa); binder adhesion by Marshall (C; MPa); split strength (Rras MPa)

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