Browse > Article
http://dx.doi.org/10.5658/WOOD.2017.45.5.622

Evaluation of Drying Properties and Yields of Domestic Quercus Species for Enhancing Utilization  

Chang, Yoon-Seong (Department of Forest Products, National Institute of Forest Science)
Shin, Hyun-Kyeong (Department of Forest Products, National Institute of Forest Science)
Kim, Sejong (Department of Forest Products, National Institute of Forest Science)
Han, Yeonjung (Department of Forest Products, National Institute of Forest Science)
Kim, Min-Ji (Department of Forest Products, National Institute of Forest Science)
Eom, Chang-Deuk (Department of Forest Products, National Institute of Forest Science)
Lee, Young-Geun (Forest Practice Research Center, National Institute of Forest Science)
Shim, Kug-Bo (Department of Forest Products, National Institute of Forest Science)
Publication Information
Journal of the Korean Wood Science and Technology / v.45, no.5, 2017 , pp. 622-628 More about this Journal
Abstract
In order to develop value-added utilization technology of domestic oaks the processing yield rate from the standing tree to the flooring material for the Quercus variabilis and Quercus mongolica were investigated. Also, to reduce drying time, improved drying schedule was applied and the physical properties were measured. The drying time was 173 hours in total, and the final moisture content was 5.39% (Quercus variabilis) and 4.17% (Quercus mongolica). The color difference of oak lumber before and after drying showed a significant change as ${\Delta}E$ value from 7 to 11. The shrinkage rates of Quercus variabilis and Quercus mongolica during drying were 8.1% and 8.5% in the tangential direction and 5.0% and 6.2% in the radial direction, respectively. The lumber manufacturing yield rate of sawn lumber was 30 to 40% and that of the final product was 8 to 15%. It is expected that the processing characteristics of the Quercus species investigated in this research could contribute to formulate an efficient production plan of domestic hardwoods that are still under utilization.
Keywords
Quercus species; wood drying; lumber yield rate; drying schedule; hardwood; value-added product;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Lee, S.J., Jung, H.S. 1990. Studies on drying rate, stress and defect with board thicknesses and drying schedules of Quercus grosseserrata B1. Journal of Korean Wood Science and Technology 18(1): 39-51.
2 Murmanis, L. 1975. Formation fo tyloses in felled quercus rubra L. Wood Science and Technology 9: 3-14.
3 National Institute of Forest Science. 2013. Classification for domestic log. Nifos notification.
4 National Institute of Forest Science. 2013. Distribution of major species on Korea. Breaking news of Forest Science. National Institute of Forest Science.
5 Korea Forestry Promotion Institution. 2017. https://fps.kofpi.or.kr
6 Oh, S.W. 1999. The relationship between anatomical characteristics and bending strength in major species of korean lepidobalanus. Journal of Korean Wood Science and Technology 27(1): 9-17.
7 Rodolfo, C., Livio, T., Ottaviano, A. 2007. White beech: a tricky problem in the drying process. Proceedings of International scientific conference on hardwood processing. September 24-26, Quebec city, Canada, p. 135-140.
8 Tarvainen, V., Saranpaa, P., Repola, J. 2001. Discoloeration of Norway spruce and Scots pine timber during drying. Proceedings of 7th International IUFRO wood drying conference. July 9-13, Tsukuba, Japan, p. 294-299.
9 Hong, B.P., Jung, H.S. 1986. Study on drying characteristics of heartwood and sapwood of quercus acutissima. Journal of Korean Wood Science and Technology 14(6): 20-29.
10 Kang, H.Y. 1992. Presteaming effect on properties of native oak lumber. Journal of Korean Wood Science and Technology 20(2): 73-80.
11 Kang, H.Y., Kim, S.W. 2004. Air- and kiln-drying the boards and disks of Quercus variabilis. Journal of Korean Wood Science and Technology 32(1): 52-58.
12 Babos, K. 1993. Tyloses formation and the state of health of quercus pertraea trees in Hungary. IAWA Journal 13(3): 239-243.   DOI
13 Han, E.J., Cho, J.Y. 2005. Color Analysis of Printed Silk with Digital Textile Printing Method. Journal of the Korean Society of Design Culture 11(2): 126-134.
14 Han, G.S., Jung, H.S. 1986. Effect of presurfacing on drying rate and drying defect of Quercus grosseserrata Bl. Journal of Korean Wood Science and Technology 14(4): 29-39.