Variability of shrinkage of pine wood in a tree trunk
https://doi.org/10.21266/2079-4304.2023.246.364-378
Abstract
Wood is an anisotropic material, as a result its physical and mechanical properties are different in the longitudinal and transverse directions. The variation in the wood properties is characteristic within the same species and in the tree trunk. Shrinkage is an important technological wood property that characterizes the change in the linear dimensions and volume of wood with a change in the amount of bound moisture. The value of wood shrinkage is uneven in the longitudinal and transverse directions and largely depends on the species and density variability in the tree trunk. The shrinkage value is necessary for the rational use of wood, its accounting and the choice of processing technology. The aim of the study is to establish the shrinkage variability of pine wood in a tree trunk with forest stands in the forest-steppe zone of the Voronezh region. The studies were carried out on sections of wood sawn at different trunk heights. It has been established that the value of volumetric shrinkage along the trunk height decreases from the butt to the top by an average of 1.2% per meter. The variability of wood shrinkage in the tree trunk in the tangential direction is greater in the central and middle parts of the trunk radius, in the radial direction in the peripheral and middle parts of the radius.
About the Authors
E. V. Kantieva
Voronezh State Forestry Engineering University named after G.F. Morozov
Russian Federation
Russian Federation
KANTIEVA Ekaterina V. – PhD (Technical), Head of the Chair of mechanical technology of wood
394087, Timiryazev str., 8 Voronezh
S. N. Snegireva
Voronezh State Forestry Engineering University named after G.F. Morozov
Russian Federation
Russian Federation
SNEGIREVA Svetlana N. – PhD (Biological), Associate Professor of Wood Science
394087, Timiryazev str., 8 Voronezh
Researcher ID: ААR-5877-2020
A. D. Platonov
Voronezh State Forestry Engineering University named after G. F. Morozov
Russian Federation
Russian Federation
PLATONOV Aleksei D. – DSc (Technical), Head of the Chair of Wood Science
394087, Timiryazev str., 8 Voronezh
Researcher ID: AAC-9820-2019
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Review
For citations:
Kantieva E.V., Snegireva S.N., Platonov A.D. Variability of shrinkage of pine wood in a tree trunk. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2023;(246):364-378. (In Russ.) https://doi.org/10.21266/2079-4304.2023.246.364-378
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