Drying characteristics of wood of invasive tree species growing in an urban environment

Določanje sušilnih karakteristik lesa invazivnih drevesnih vrst rastočih v urbanem okolju

Authors

  • Denis Plavčak
  • Željko Gorišek
  • Aleš Straže
  • Maks Merela

DOI:

https://doi.org/10.26614/les-wood.2019.v68n02a03

Keywords:

invasive wood species, wood, permeability, diffusivity, drying rate, drying quality

Abstract

Non-native tree species are increasingly growing in urban environments, where they are exposed to cultivation and pruning measures, and in many cases their growth becomes uncontrolled, even invasive. In such cases the structure of the wood is more heterogeneous, with more tyloses, discolorations and decay, and higher moisture content. The drying of such wood is more demanding and cannot rely on the standard drying schedules. Therefore, the drying kinetics of the boards (thickness 22 mm, 28 mm and 46 mm) of three wood species (black locust – Robinia pseudoacacia; box elder – Acer negundo and horse chestnut – Aesculus hippocastanum) were analysed at 20 °C and 40 °C. Additionally, the drying quality was assessed by determining the moisture content gradient, drying stresses and presence of typical drying defects. In the drying tests the moisture content gradients were relatively low in all species, so no high drying stresses were generated. Due to the expected high risk of collapse, careful drying of green maple was needed, to prevent board twisting when a pronounced number of knots and greater fibre deviation occurred. Half-drying times indicated the longer drying of thicker black locust boards, and very careful drying of maple. We confirmed the usability of the half-drying time to compare the drying kinetics of different wood species and assortments.

Downloads

Download data is not yet available.

Downloads

Published

30.12.2019

Issue

Section

Articles

How to Cite

Plavčak, D., Gorišek, Željko, Straže, A., & Merela, M. (2019). Drying characteristics of wood of invasive tree species growing in an urban environment: Določanje sušilnih karakteristik lesa invazivnih drevesnih vrst rastočih v urbanem okolju. Les/Wood, 68(2), 31-43. https://doi.org/10.26614/les-wood.2019.v68n02a03

Similar Articles

1-10 of 119

You may also start an advanced similarity search for this article.

Most read articles by the same author(s)

1 2 3 4 > >>