Original scientific paper

Dimensional stability of heat treated wood floorings

Vjekoslav Živković orcid.org/0000-0003-3930-9032 ; Faculty of Forestry, University of Zagreb, Croatia
Ivan Prša ; Faculty of Forestry, University of Zagreb, Croatia
Hrvoje Turkulin ; Faculty of Forestry, University of Zagreb, Croatia
Tomislav Sinković ; Faculty of Forestry, University of Zagreb, Croatia
Vlatka Jirouš-Rajković ; Faculty of Forestry, University of Zagreb, Croatia

Abstract

Heat treated wood (HTW) is successfully applied for floorings due to its better moisture resistance, increased dimensional stability, and uniform colour change to darker, brownish colours. The aim of this work was to define the hygroscopic range and equilibrium moisture content at ambient conditions of heat treated wood of two wood species – ash and beech. Material was treated at two temperature levels, 190 and 210 °C, and the properties were compared with native wood. The reduction in dimensional changes is expressed by volumetric shrinking and Anti Shrink Efficiency (ASE). Additionally, parquet elements were made out of such HTW, oil-impregnated and waxed, and subsequently tested for water vapour and liquid water permeability. Shrinking gradients of HTW were not reduced in comparison with native beech wood, but the absolute reduction in water uptake resulted in cca 50 % lower EMC values and up to cca 60 % improved ASE values. Surface treatment further improved the hygroscopic properties of HTW.

Keywords

heat treated wood; parquet elements; dimensional stability; beech; ash

Hrčak ID:

25408

URI

https://hrcak.srce.hr/25408

Publication date:

18.7.2008.

Article data in other languages: croatian

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