By Ladislav Reinprecht
Wood Deterioration, safety and Maintenance offers an up-to-the-minute dialogue of the average sturdiness of wooden, wooden degradation techniques, and strategies of structural and chemical safeguard of wooden. glossy lively components in wooden preservatives and the relationships among preservative houses, the anatomical constitution and moisture content material of wooden and protecting tactics related to strain and/or diffusion using forces are totally illustrated.
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And Yokoyama, K. (1986) Microstructure and silica mineralization in the formation of silicified woods. II. Distribution of organic carbon and the formation of quartz in the structure of silicified woods. Mokuzai Gakkaishi 32, 575–583.
The anatomical details remain copied in the petrified wood, although only when the mineral substance has not crystallized in the cell walls. Wood carbonization is related to the decrease in the contents of hydrogen and oxygen in its components (polysaccharides and lignin), and with an aliquot increase in the content of carbon. Finally, carbon is concentrated in particular in the non-hydrolysable substances similar to lignin. g. of condensation type). 1 Properties of weathered wood Wood degraded by weather changes in particular on its surface.
However, photodegradation rate and extent also depend on the wood species (Pandey & Vuorinen, 2008). , 2012) occurs as well. , 2011). Wood Deterioration, Protection and Maintenance, First Edition. Ladislav Reinprecht. © 2016 John Wiley & Sons, Ltd. Published 2016 by John Wiley & Sons, Ltd. 1 29 Abiotic degradation of wood in interior and exterior environments Mode and intensity of wood degradation Interior Abiotic factor Thermal (a) intense (b) moderate Exterior Mode Intensity Mode Intensity Fire Darkening Strength decrease Significant Significant Moderate Fire Darkening Strength decrease Significant Significant Moderate Photo-oxidation Colour changes Moderate ‘On surface’ ‘On surface’ Photo-oxidation Colour changes Significant ‘On surface’ ‘On surface’ Radiation (UV, visible, IR) Water Leaching out of photo-oxidized lignin Hydrolysis lasting many years Significant ‘on surface’ Fibrillation and roughening Significant ‘on surface’ Moderate ‘fossilization’ Sand, etc.