Effect of Preservative Treatments and Exposure Conditions on the Mechanical Properties and Performance of Wood,
MISSISSIPPI STATE UNIV MISSISSIPPI STATE FOREST PRODUCTS UTILIZATION LAB
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Significant losses in strength of wood associated with decay occur well in advance of detectable changes in such physical properties as weight and color. Thus, the occurrence of even incipient decay in untreated load-bearing members usually dictates that such members be replaced. Preservative treatments provide protection against biological deterioration, but both the processing operations and certain salt-type preservatives have the potential of reducing the mechanical properties of wood. Strength losses induced by decay and by preservative treatments are discussed.