Mechanical and physical properties of Cunninghamia lanceolata wood decayed by brown rot
Date
2019-04-03
Journal Title
Journal ISSN
Volume Title
Publisher
Italian Society of Silviculture and Forest Ecology
Abstract
ENGLISH ABSTRACT: The relationship between the mechanical properties of Cunninghamia lanceolata (Chinese fir) wood and the development of fungal decay was investigated with the aim of implementing a statistical model useful as a non-destructive and a fast method for determining the state of conservation of in-service timber structures. Artificial decay due to brown rot fungi was induced on wood specimens and physical and mechanical test were performed periodically, as well as anatomical observation of wood, FT-IR spectroscopic and XRD diffraction analysis. As a result, Chinese fir was confirmed to have a good durability against fungi, showing a mass loss percentage of 7.21% on average after 14 weeks of exposure. On the contrary, the mechanical properties reduced dramatically during the decay test: a 19% decrease was observed for compression strength and 21% for tensile strength. The mechanism of decay was explored and the corresponding damage constitutive model was proposed.
Description
CITATION: Li, S., et al. 2019. Mechanical and physical properties of Cunninghamia lanceolata wood decayed by brown rot. iForest: Biogeosciences and Forestry, 12(3):317-322, doi:10.3832/ifor2922-012.
The original publication is available at http://iforest.sisef.org
The original publication is available at http://iforest.sisef.org
Keywords
Wooden-frame buildings, Wood buildings, Brown Rot, Mass measurement, Wood Decay, Deterioration of wood
Citation
Li, S., et al. 2019. Mechanical and physical properties of Cunninghamia lanceolata wood decayed by brown rot. iForest: Biogeosciences and Forestry, 12(3):317-322, doi:10.3832/ifor2922-012