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http://dx.doi.org/10.5658/WOOD.2016.44.5.776

Evaluation of Physico-mechanical Properties and Durability of Larix kaempferi Wood Heat-treated by Superheated Steam  

Park, Yonggun (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
Park, Jun-Ho (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
Yang, Sang-Yun (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
Chung, Hyunwoo (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
Kim, Hyunbin (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
Han, Yeonjung (Department of Forest Products, National Institute of Forest Science)
Chang, Yoon-Seong (Department of Forest Products, National Institute of Forest Science)
Kim, Kyoungjung (With-Wood Co.)
Yeo, Hwanmyeong (Department of Forest Sciences, College of Agriculture & Life Sciences, Seoul National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.44, no.5, 2016 , pp. 776-784 More about this Journal
Abstract
In this study, green Larix kaempferi lumber was heat-treated by using superheated steam (SHS) at a pilot scale and then various physico-mechanical properties of the heat-treated wood were evaluated and compared with the properties of conventional hot air (HA) heat-treated wood. Decay resistance of brown rot fungi and compressive strength parallel to the grain of the SHS heat-treated wood without occurrence of drying check from green lumber were increased. On the other hand, density, equilibrium moisture content, shrinkage, and bending strength of the SHS heat-treated wood were lower than those of the conventional HA heat-treated wood. Because heat transfer and thermal hydrolysis of SHS heat treatment was accelerated by a large amount of water, the effect of SHS heat treatment on the physico-mechanical properties was higher than that of HA heat treatment at the similar conditions of temperature and time. From the results of this study, because green lumber can be heat-treated without occurrence of cracks or checks by using SHS and similar heat treatment effect on the physico-mechanical properties of wood can be produced despite a low temperature or short time of heat treatment, it is expected that heat time and energy consumption could be reduced by using SHS.
Keywords
superheated steam heat treatment; wood property; Larix Kaempferi;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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