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Title: Modulus of elasticity loss as a rapid indicator of rot-fungal attack on untreated and preservative-treated wood in laboratory tests

Source: BioResources 12(1):1850-1860

Author(s)Ma, Xingxia; Kirker, Grant T.; Clausen, Carol A.; Jiang, Mingliang; Zhou, Haibin

Publication Year: 2017  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4723-3A

Abstract: The modulus of elasticity (MOE) of wood is a sensitive indicator of rotfungal attack. To develop an alternative method of rapid assessment of fungal decay in the laboratory, changes in static MOE of untreated and preservative-treated wood were measured during exposure to the brownrot fungus, Gloeophyllum trabeum, and the white-rot fungus, Trametes versicolor, in a standard soil bottle assay. Static MOE loss was compared with mass loss. The results showed that the MOE of wood was a sensitive and reliable indicator of rot-fungal attack, regardless of fungus or wood species. The MOE analysis of untreated wood reduced the 12- to 16-week exposure time necessary for the standard mass loss measurement to four weeks. Also, the exposure time for preservative-treated wood was reduced to eight weeks. Untreated wood was determined to be susceptible to decay if the MOE loss was 40% or more after a four-week exposure, while treated wood was considered susceptible to decay if the MOE loss was 40% or more after an eight-week exposure.

Keywords: Fungal decay; Modulus of elasticity (MOE); Mechanical indicators; Preservative treated wood

Publication Review Process: Formally Refereed

File size: 10,240 kb(s)

Date posted: 03/01/2017

This publication is also viewable on Treesearch:  view
RITS Product ID: 84186
Current FPL Scientists associated with this product (listed alphabetically)
Clausen, Carol A.
Supervisory Research Microbiologist
Kirker, Grant
Research Forest Products Technologist
 

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