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http://dx.doi.org/10.5658/WOOD.2013.41.3.221

Effect of End-coating Around Pith of Heavy Timbers of Red Pine and Korean Pine on High-temperature and Low-humidity Drying Characteristics  

Lee, Chang-Jin (College of Agriculture & Life Sciences(Institute of Agricultural Science & Technology), Chonbuk National University)
Lee, Nam-Ho (College of Agriculture & Life Sciences(Institute of Agricultural Science & Technology), Chonbuk National University)
Eom, Chang-Deuk (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Reasearch Institute)
Shin, Ik-Hyun (College of Agriculture & Life Sciences(Institute of Agricultural Science & Technology), Chonbuk National University)
Park, Moon-Jae (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Reasearch Institute)
Park, Joo-Saeng (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Reasearch Institute)
Publication Information
Journal of the Korean Wood Science and Technology / v.41, no.3, 2013 , pp. 221-233 More about this Journal
Abstract
This study was performed to identify the effect of end-coating around pith of heavy timbers of Red pine and Korean pine on high temperature and low humidity drying characteristics. Total drying times were 268 hours, and ranges of final moisture content was investigated that Red Pine 9.2% to 10.8% MC for square and round timber, in case of Korean Pine 15.0% to 22.0% MC for square timber, 12.8% to 20.4% MC for round timber. Moisture content distribution of Red Pine was a uniform, but part of high moisture content was found in Korean Pine. In case of Korean pine, the surface checks were occurred more severe than in case of Red pine, and end-coating treatment were investigated to be ineffective on surface check. The internal checks were only formed on the two timbers. The value of the case hardenings was investigated that the ranges 3.7% to 9.1% for Red pine. In case of Korean pine, on the other hand, the case hardenings presence a few as 20.9% to 35.8%.
Keywords
High-temperature and low-umidity pretreatment (HTLH); High temperature drying (HD); final moisture contents; heavy timber; internal check; case hardening;
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Times Cited By KSCI : 6  (Citation Analysis)
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