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Air-Drying Curve and Moisture Content Distribution of Softwood Square Timber  

Jung, Hee-Suk (College of Agriculture & Life Sciences, Seoul National University)
Lee, Chul-Hyun (College of Agriculture & Life Sciences, Seoul National University)
Kang, Wook (College of Agriculture & Life Sciences, Seoul National University)
Eom, Chang-Deuk (College of Agriculture & Life Sciences, Seoul National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.31, no.1, 2003 , pp. 27-31 More about this Journal
Abstract
This paper presents the results of air-drying processes and mositure content (MC) distribution of red pine (P. densiflora) and Japanese larch (L. leptolepis) square timber with 14 cm and 16.5 cm of face size, respectively. The air-drying rates of square timber were comparatively high during the first 8 weeks, after that gradually decreased. The time to air dry square timber from initial MC to specified MC of 18 percent required about 26 weeks for 14.0 cm and 32 weeks for 16.5 cm square of red pine, and 32 weeks for 14.0 cm and 48 weeks for 16.5 cm square of Japanese larch. The longitudinal- and transverse MC distribution of these air-dried squares showed slight moisture gradient. The effect of face size on moisture gradient of Japanese larch square was more pronounced comparing with red pine one.
Keywords
air-drying; moisture content distribution; drying time; red pine; Japanese larch; square timber;
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