New method for assessing the efficiency of modified wood

Niels  Morsing

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New method for assessing the efficiency of modified wood

The Danish Technological Institute has worked with the University of Copenhagen to develop a screening method for assessing the efficiency of modified wood made for outdoor use without adding any biocides. One advantage of the method is that the result is available in just 24 hours versus the 16 weeks required for conventional tests. The new method gives a more precise picture of the durability of modified wood.

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The new method has been developed on the basis of experience gained about enzymes during bioethanol production. The method now needs to be further developed for application to, e.g., pressure-impregnated wood products treated with onventional protectants. Both the industry and research circles are keenly awaiting the results.

One obstacle to implementing modified wood products in the market has been the lack of suitable test methods for efficiency assessments.

Modified wood has been developed as a replacement for, e.g., pressure-impregnated wood and should therefore also be assessed in respect of its protective effect against fungal attacks.

However, the test methods applied so far have been developed for conventional wood protection where the wood is protected according to principles different from those used when it is modified.