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Air Circulating Oven-drying Characteristics of Hollowed Round-post for Korean Main Conifer Species Part 3: Effects of Water-vapor Dam and Heartwood Coating Treatments

  • Lee, Nam-Ho (College of Agriculture & Life Sciences (Institute of Agricultural Science & Technology), Chonbuk National University) ;
  • Zhao, Xue-Feng (Department of Wood, College of Forestry, Beihua University) ;
  • Shin, Ik-Hyun (College of Agriculture & Life Sciences (Institute of Agricultural Science & Technology), Chonbuk National University) ;
  • Lee, Chang-Jin (College of Agriculture & Life Sciences (Institute of Agricultural Science & Technology), Chonbuk National University)
  • 투고 : 2011.12.26
  • 심사 : 2013.12.18
  • 발행 : 2014.03.25

초록

In this study the effect of heartwood-coating (HCO), vapor-dam (VD), bark-remaining (BR) and bark-remaining-coating (BRC) treatments on the air circulating oven-drying characteristics of Japanese larch hollowed round-post was evaluated. The drying times of the hollowed round-posts for control, VD, HCO and BR specimens were 72, 168, 204 and 240 hours, respectively, from the initial MC to about 8% MC, which was recommended as the indoor in-use MC. The temperature in the hole of the VD specimen was lower than that of wood and the difference between air temperature in the hole and wood temperature became large during drying period. The vapor pressure of air in the hole was higher than that of inside wood for all specimens except VD specimen. The surface checks on all specimens were observed in increasing order of BR, BRC, UC, HCO and VD specimens.

키워드

참고문헌

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