Using Biodegraded Wood to Produce Boards Without Binders. P. 139-151

Complete text of the article:

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UDС

674.817

DOI:

10.37482/0536-1036-2026-2-139-151

Abstract

Currently, climate change leads to an increase in forest stand mortality. Dead trees are exposed to wood-destroying fungi. The lack of industrial methods for utilizing such raw materials is due to the low physical and mechanical properties of biodegraded wood, especially at advanced stages of decomposition. The study found that 15 years after tree death, Siberian fir wood affected by white rot has a density of 305 kg/м3, a static bending strength of 27 MPa, and an impact strength of 3.48 J/м2. For wood affected by brown rot, these values are 13 MPa and 1.08 J/м2, respectively. Thermal analysis showed that the carbohydrate content in white-rot wood is comparable to that of healthy wood. In brown-rot wood, the proportion of hemicelluloses and the aromatic part of cellulose is 46.83 %. The proposed processing method involves the production of binderless boards using hydrodynamic activation of the raw material. Hot-pressed boards with a density of 800 kg/ м 3 exhibit the following properties: for brown-rot wood, the static bending strength is 27 MPa and the internal bond strength is 0.92 MPa; for white-rot wood, these values are 35 and 0.86 MPa, respectively. It was also established that the water resistance of boards made from biodegraded wood significantly exceeds that of existing analogues. Boards made from brown-rot Siberian fir wood retain up to 90 % of their strength after boiling for two hours followed by drying. Boards from white-rot wood at advanced stages of decay retain 60 % of their strength. These boards are suitable for furniture production and construction in both dry and humid conditions.

Authors

Vladimir N. Ermolin, Doctor of Engineering, Prof.; ResearcherID: X-9597-2019,
ORCID: https://orcid.org/0000-0002-2113-4142
Mikhail A. Bayandin*, Candidate of Engineering, Assoc. Prof.; ResearcherID: S-1990-2019,
ORCID: https://orcid.org/0000-0002-6228-2715
Nikolay V. Smertin, Postgraduate Student; ORCID: https://orcid.org/0009-0003-1566-669X

Affiliation

Reshetnev Siberian State University of Science and Technology, Krasnoyarskiy Rabochiy Prospect, 31, Krasnoyarsk, Russian Federation, 660037; vnermolin@yandex.ru, mihailbayandin@yandex.ru*, kolya.smertin@mail.ru

Keywords

Siberian fir, Abies sibirica, Siberian fir wood, rot, brown crack rot, white rot, wood-decaying fungi, cavitation, panel material, binderless boards, boards from biodegraded wood, wood properties, application of rot-affected wood

For citation

Ermolin V.N., Bayandin M.A., Smertin N.V. Using Biodegraded Wood to Produce Boards Without Binders. Lesnoy Zhurnal = Russian Forestry Journal, 2026, no. 2, pp. 139–151. (In Russ.). https://doi.org/10.37482/0536-1036-2026-2-139-151

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