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Modified Wood and Biological Degradation

Testing of decay resistance can be performed in a laboratory environment or in outdoor field trials, and there are many standards defined for these tests. The first objective of a laboratory-based test is to provide a methodology for the rapid screening of a candidate wood preservative, treatment or modification in order to assess which ones exhibit decay resistance. Broadly speaking, laboratory-based tests can be divided into sterile (pure culture) tests and unsterile tests (such as fungal cellar, soil burial etc.). [Pg.41]

Bacterial attack is an early stage in the degradation of wood exposed in wet or moist conditions. Bacteria can be the dominant form of attack when fungal decay is suppressed by a wood-preserving treatment. Bacteria can attack the cell wall of wood by tunnelling, cavitation or erosion mechanisms (Eaton and Hale, 1993). [Pg.43]

In circumstances in which wood is exposed in a marine environment, attack by marine organisms, such as fungi, bacteria and marine boring animals, can occur. Of these, the marine boring organisms (molluscs and crustaceans) are responsible for most of the damage. There is relatively little literature on this subject in connection with modified wood. [Pg.43]


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