SOME PHYSICAL AND MECHANICAL PROPERTIES OF OAK WOOD AFFECTED BY ROT

UDC 630*221.02

Khvasko Andrey Vladimirovich – PhD (Agriculture), Associate Professor, Head of the Department of Forest Protection and Wood Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). Е-mail: khvasko@belstu.by

Larinina Yuliya Aleksandrovna – Master of Biology, PhD (Agriculture), Assistant Professor, the Department of Silviculture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). Е-mail: lesya25106@mail.ru

 Volchenkova Galina Aleksandrovna – PhD (Biology), Associate Professor, Head of the Department of Landscape Design and Architecture. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). Е-mail: volchenkova@belstu.by

Korzon Viktor Georgiyevich – PhD student, the Department of Forest Protection and Wood Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: poiuytrewq19744@mail.ru

DOI: https://doi.org/ 10.52065/2519-402Х-2024-276-13

Key words: oak, stem rot, condition categories, wood density, mechanical properties.

For citation: Khvasko A. V., Larinina Yu. A., Volchenkova G. A., Korzon V. G. Some physical and mechanical properties of oak wood affected by rot. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2024, no. 1 (276), pp. 99–104 (In Russian). DOI: 10.52065/2519-402Х-2024-276-13.

Abstract

The study examined the issues of assessing the rate of degradation of oak wood affected by rot, and their influence on the physical and mechanical properties of harvested round timber. The article presents the results of changes in the physical and mechanical properties of oak wood damaged by yellowishwhite striped (causing agent – Phellinus robustus Karst.) and red-brown prismatic (Laetiporus sulphureus Bond.) heart rots. It has been noted that oak stem rot, caused by Ph. robustus and L. sulphureus, significantly worsens both the quantitative and qualitative properties of oak wood only when developing on the tree for several years until the tree death. It was revealed that the density of fresh and old dead wood compared with wood without signs of weakening decreases by 3.2 and 6.6% respectively, the compressive strength along the fibers – by 10.3 and 15.0%, the compressive strength across the fibers – by 12.1 and 15.5%, the tensile strength at static bending – by 9.8 and 10.5%, hardness – by 8.8 and 9.9%, impact strength – by 9.3 and 10.4%. A statistical assessment of the results showed that the established differences between the wood properties of different categories of tree condition are reliably significant.

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13.10.2023