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The article discusses a method for systematic analysis of the processes of structure formation of a gypsum composite, which can be used as a restoration composition for objects of cultural heritage of Odessa. This method is based on processing the obtained experimental data of studying the physical properties of the material, such as the speed of ultrasound passing through the material, electrical conductivity, dielectric losses, and heat release during hydration. The resulting experimental curves are transformed to reveal hidden features. The transformation of experimental curves is carried out in several stages: normalization, transition to curvature graphs, joint analysis of features. As a analysis result, the partial synchronization effects of the curve features’ appearance (extrema and zeros of curvature) are detected, and time synchronization bands are identified. The synchronization phenomena is interpreted as a consequence of the solid, liquid and surface subsystems’ geometric-topological transformation of the hardening material. The studied properties are classified according to the type of subsystems that make the greatest contribution to their changes. These changes in the structure formation process are interpreted from the perspective of the percolation theory. Electrical conductivity changes when a percolation conductive cluster of free water filling the capillary-porous structure of the material is broken. Free water is spent on hydration processes. The change in ultrasound speed is explained by the percolation cluster formation of the solid phase, which conducts mechanical and sound vibrations. A gradual change in the geometry of such a cluster is assumed, consisting in its overgrowthing with single-linked structures - “dead ends”. Subsequently, these structures are transformed into bi- and tri-linked ones. The systemic interpretation of the synchronization phenomena under consideration is based on taking into account the structural transformations of solid, liquid and surface subsystems occupying the same total volume. The phenomena of synchronization of changes in properties during structure formation seem to be a fairly universal pattern, covering also polymineral binders.

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System Analysis of Structure Formation Processes of Composite Materials Based on Experimental Data

  • 会议论文

  • 发表日期：

    2025年

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  • A. Kolesnykov,
  • S. Semenova,
  • D. Levitskyi

摘要

The article discusses a method for systematic analysis of the processes of structure formation of a gypsum composite, which can be used as a restoration composition for objects of cultural heritage of Odessa. This method is based on processing the obtained experimental data of studying the physical properties of the material, such as the speed of ultrasound passing through the material, electrical conductivity, dielectric losses, and heat release during hydration. The resulting experimental curves are transformed to reveal hidden features. The transformation of experimental curves is carried out in several stages: normalization, transition to curvature graphs, joint analysis of features. As a analysis result, the partial synchronization effects of the curve features’ appearance (extrema and zeros of curvature) are detected, and time synchronization bands are identified. The synchronization phenomena is interpreted as a consequence of the solid, liquid and surface subsystems’ geometric-topological transformation of the hardening material. The studied properties are classified according to the type of subsystems that make the greatest contribution to their changes. These changes in the structure formation process are interpreted from the perspective of the percolation theory. Electrical conductivity changes when a percolation conductive cluster of free water filling the capillary-porous structure of the material is broken. Free water is spent on hydration processes. The change in ultrasound speed is explained by the percolation cluster formation of the solid phase, which conducts mechanical and sound vibrations. A gradual change in the geometry of such a cluster is assumed, consisting in its overgrowthing with single-linked structures - “dead ends”. Subsequently, these structures are transformed into bi- and tri-linked ones. The systemic interpretation of the synchronization phenomena under consideration is based on taking into account the structural transformations of solid, liquid and surface subsystems occupying the same total volume. The phenomena of synchronization of changes in properties during structure formation seem to be a fairly universal pattern, covering also polymineral binders.