PERFORMANCE OF THE COPPER TREATED, AND NATURALLY DURABLE WOOD IN LABORATORY AND OUTDOOR CONDITIONS

Author(s): Humar, M., Lesar, B. and Thaler, N.
Paper category: Conference
Book title: XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Editor(s): Marco Quattrone, Vanderley M. John
Print ISBN: none
e-ISBN: 978-2-35158-149-0
Publication year: 2015
Pages: 703-710
Total Pages: 8
Language: English

Abstract: In present research, service life of wood exposed outdoor, above ground was investigated. These results of the field testing were compared with results of laboratory tests. In the first part of the investigation, Norway spruce wood specimens were impregnated with six different copper-ethanolamine based solutions, consisting of the following ingredients: Copper(II) sulphate, ethanolamine, quaternary ammonium compound, boric acid, and octanoic acid. Solutions of two different concentrations were prepared to achieve two different retentions. Impregnated and artificially aged specimens were exposed to two brown rot fungi (Gloeophyllum trabeum and Antrodia vaillantii) and one white rot fungus (Trametes versicolor) according to the EN 113 procedure. Additionally, leaching of the tested copperethanolamine based wood preservatives was performed according to the standard ENV 1250-2 protocol. Results of the laboratory tests showed that fixation of copper-ethanolamine based preservatives is significantly affected by its composition. Field test data and laboratory experiments clearly showed that addition of co-biocides to copper-ethanolamine solution is essential to ensure sufficient performance. Results of the field testing of copper based solutions showed that these treatments significantly prolong service life of wood, while untreated spruce wood is degraded in the period between 4 and 6 years.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00