Establishing patterns in the formation of properties of fire-resistant biocomposites based on a hybrid binder

Authors

DOI:

https://doi.org/10.15587/1729-4061.2025.348144

Keywords:

fragility of gypsum products, hybrid binder, wood sawdust, coke layer, fire resistance

Abstract

The process that forms the properties of fire-resistant biocomposites based on wood sawdust and a binder from a mixture of gypsum and an intumescent coating based on PVA dispersion has been investigated. The task addressed is to ensure the stability of biocomposites based on a gypsum binder to changes under operating conditions. This is important since the production of biocomposites from renewable sources for construction is relevant.

It has been proven that when thermally exposed to the biocomposite samples, no ignition occurred, the maximum temperature of the flue gases was about 84°C. When using a gypsum binder, a non-combustible structure was formed on the surface of the biocomposite, which prevented the sample from igniting. For a biocomposite based on a binder from a mixture of gypsum and an intumescent coating based on PVA dispersion (hybrid binder), charring of the sample surface is characteristic, which prevents its ignition.

In addition, the results of determining the process of wetting biocomposites with test liquids showed that the obtained solids belong to hydrophilic materials with high water wettability. Analysis of the results of experiments on water absorption of biocomposites reveals that the maximum mass gain of the biocomposite on gypsum binder under the influence of moisture was almost 27% and the main increase in moisture occurred in the first 5 days of exposure. The mass gain of the biocomposite samples on hybrid binder was less than 10% due to the formation of a shell on the surface of sawdust. The value of the compressive strength of biocomposites showed that the sample formed on gypsum binder is significantly fragile. However, for the biocomposite formed on hybrid binder, the ultimate strength is 1.88 MPa, which is provided by the adhesive properties of the intumescent coating.

Thus, there are grounds to argue about the possibility to effectively design operationally stable biocomposites for construction

Author Biographies

Yuriy Tsapko, Kyiv National University of Construction and Architecture

Doctor of Technical Sciences, Professor

Department of Environmental Protection Technologies and Labour Safety

Аleksii Tsapko, Kyiv National University of Construction and Architecture

Doctor of Philosophy (PhD), Senior Researcher

Department of Building Materials

Oksana Berdnyk, Kyiv National University of Construction and Architecture

PhD, Associate Professor

Department of Technology of Building Structures and Products

Ruslan Likhnyovskyi, Institute of Scientific Research on Civil Protection of the National University of Civil Protection of Ukraine

PhD, Senior Researcher

Research and Testing Center

Vladyslav Halitsa, Kyiv National University of Construction and Architecture

PhD Student

Department of Building Materials

Maryna Sukhanevych, University of New Brunswick

Doctor of Technical Sciences, Professor, Postdoctoral Fellow

Department of Civil Engineering

Ruslan Klymas, Institute of Scientific Research on Civil Protection of the National University of Civil Protection of Ukraine

PhD, Senior Researcher

Research and Testing Center

Vitally Prisyazhnuk, Institute of Scientific Research on Civil Protection of the National University of Civil Protection of Ukraine

PhD, Senior Researcher

Research and Testing Center

Pavlo Illiuchenko, Institute of Scientific Research on Civil Protection of the National University of Civil Protection of Ukraine

Doctor of Philosophy (PhD)

Research and Testing Center

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Establishing patterns in the formation of properties of fire-resistant biocomposites based on a hybrid binder

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Published

2025-12-31

How to Cite

Tsapko, Y., Tsapko А., Berdnyk, O., Likhnyovskyi, R., Halitsa, V., Sukhanevych, M., Klymas, R., Prisyazhnuk, V., & Illiuchenko, P. (2025). Establishing patterns in the formation of properties of fire-resistant biocomposites based on a hybrid binder. Eastern-European Journal of Enterprise Technologies, 6(10 (138), 39–47. https://doi.org/10.15587/1729-4061.2025.348144

Issue

Vol. 6 No. 10 (138) (2025): Ecology

Section

Ecology

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Copyright (c) 2025 Yuriy Tsapko, Аleksii Tsapko, Oksana Berdnyk, Ruslan Likhnyovskyi, Vladyslav Halitsa, Maryna Sukhanevych, Ruslan Klymas, Vitally Prisyazhnuk, Pavlo Illiuchenko

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