The authors previously proposed a mathematical model of the viscoelastic compliance of densely crosslinked polymers. In the present paper, the methodology for theoretical parametric identification of this model is shown, with subsequent prediction of the results of a thermomechanical experiment.

Today, more and more studies are devoted to activation of primary components of building materials. This paper is concerned with the viability of activating mineral bonding materials, Portland cement in particular, in the Vortex Layer Machine (VLM) with a purpose of physical modification. By applying modern methods for studying the specific surface, pH change, X‐ray phase and differential‐thermal analysis, and IR spectroscopy, it was found that activation of Portland cement in the VLM constitutes an efficient method for enhancing physical and chemical activity. It was also found that, depending on the content of mineral additives in the VLM, activation of Portland cement leads to significant extension of its specific surface, decrease of particle size, and also to prevalence of processes related to activation of an agent in the surface layer. During activating Portland cement, mineral crystal structure is being destructed, with the most significant changes observed for C3S. Besides, processing Portland cement in the VLM results in polycondensation of SiO4‐tetrahedral units, which reduces the basicity of hydrated calcium silicates during hydration; in the cement stone, ettringite content increases, and so does content of low‐basic hydrated calcium silicates and aluminates, which reinforces strength and chemical resistance of concrete. The acquired results speak for benefits of activating mineral bonding materials in the VLM with the purpose of enhancing physical‐mechanical properties of building materials.

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Improving the efficiency of construction composites is a relevant problem for modern-day material science. One of the ways to solve the problem consists in activating the binders by means of vortex-layer devices. Mathematical transformations produced a formula for calculating the dependency of the number of ferromagnetic-particle collision on the number and velocity of such particles, as well as on the device chamber fill factor. The results obtained by applying the proposed formula differ from D.D. Logvinenko's model by 10% at max. We calculated the impact force, the impulse of the grinding body in the vortex-layer device, as well as the amount of applied energy per unit of mass of the ground material. It was found out that the impact force and the impulse of force were maximized in the test device. At the same time, energy applied over the grinding time necessary to even out the binder dispersion in the vortex-layer device was 2 to 4.8 times greater compared to conventional devices.

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