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    Author(s): Simon Curling; Jerrold E. WinandyCarol A. Clausen
    Date: 2000
    Source: [The International Research Group on Wood Preservation. Section 2, Test Methodology and Assessment : 31st annual meeting, Kona, Hawaii, USA, 14-19 May 2000. Stockholm, Sweden : IRG Secretariat, 2000].:12 p. : ill.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (60 KB)

    Description

    At very early stages of decay of wood by basidiomycete fungi, strength loss can be measured from wood before any measurable weight loss. Therefore, strength loss is a more efficient measure of incipient decay than weight loss. However, common standard decay tests (e.g. EN 113 or ASTM D2017) use weight loss as the measure of decay. A method was developed that allowed progressive removal of samples so that all stages of colonisation and decay could be monitored by strength testing, weight loss determination and chemical analysis. Our results indicated that substantial and rapid decay (90% strength loss and 40% weight loss after 12 weeks) of southern pine by brown rot fungi was possible using the method. Our results also demonstrate a direct relationship between strength loss and weight loss and suggest a quantitative relationship between strength loss and chemical composition (hemicellulose sugars) during incipient decay of southern pine by basidiomycete fungi.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Curling, Simon.; Winandy, Jerrold E.; Clausen, Carol A. 2000. An experimental method to simulate incipient decay of wood basidiomycete fungi. [The International Research Group on Wood Preservation. Section 2, Test Methodology and Assessment : 31st annual meeting, Kona, Hawaii, USA, 14-19 May 2000. Stockholm, Sweden : IRG Secretariat, 2000].:12 p. : ill.

    Keywords

    Basidiomycotina, Wood destroying fungi, Decay fungi., Methodology, Simulation models, Strength testing, Chemical composition

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