ISSN:
1432-5225
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Summary A mathematical model was developed for evaluating moisture uptake, swelling, and moisture distribution during longitudinal penetration of water in once-dried hardwoods. The model takes into account volume changes in the wood during moisture uptake and can be used to predict water penetration up to the complete saturation of the wood. Bound and free moisture penetration constants were calculated from swelling and uptake data for different hardwood species at different temperatures. These constants best fit the model at low temperatures in hardwoods with obstructed vessels. Although steep moisture gradients were measured near the surface of the wood, away from the wood-water interface, moisture content was uniform. Moisture content distribution was somewhat affected by vessel moisture uptake. In hardwoods with unobstructed vessels, the initial penetration of moisture in vessels contributed at most 9% to the moisture uptake.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00351862
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