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Some aspects of testing water repellents

Some aspects of testing water repellents

Document International Research Group on Wood Preservation ( IRG/WP/98-40113): 6 pp.

Several test methods are used to determine the efficiency of water repellent treatments on wood. The most common are: contact angle measurement, swelling rate of samples immersed under water and the increase in mass of wood samples with time or after a fixed period of time either fully immersed under, or partially immersed in or floating on water. In this paper, some fundamental aspects of the latter, gravimetric method are discussed.

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