Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Evaluation and Improvement of Permeability in Radial and Tangential Section of Domestic Softwoods

국산 침엽수의 방사, 접선단면의 투습성 평가와 개선방안에 관한 연구

  • KIM, Joon Ho (Department of Bio-based materials, Chungnam National University) ;
  • YANG, Seung Min (Department of Bio-based materials, Chungnam National University) ;
  • LEE, Hyun Jae (Department of Bio-based materials, Chungnam National University) ;
  • PARK, Ki Hyung (The Korean Woodism-city Project Research Council, Chungnam National University) ;
  • KANG, Seog Goo (Department of Bio-based materials, Chungnam National University)
  • Received : 2020.08.19
  • Accepted : 2020.10.22
  • Published : 2020.11.25
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this research was to evaluate the vapor permeability of nine different species of domestic softwood and the vapor permeability evaluation through the production of small wall structures for the developing applications, utilizing the vapor permeability of wood. In addition, the permeability evaluation was attempted by means of the production of a small wall structure injected with a waste material, bottom ash, as a moisture absorbent for improving the permeability. Consequently, the results of the vapor permeability evaluation by means of Sd value are as follows: (1) It was observed that Abies holiphylla, Picea jezoensis, Ginkgo biloba, Pinus koraiensis and Pinus rigida are permeable to moisture among 9 species of domestic softwood in Korea. (2) By means of this, semi-permeability efficiency was evaluated when producing a small wall structure. (3) Besides, improved effects of permeability were evaluated when producing a small wall structure inserted with bottom ash. As a result, it was confirmed that the Sd value of Pinus koraiensis turned out to be 1.63, which is superior to other 8 tree species.

본 연구는 목재의 투습성을 활용한 용도개발을 위해 국산 침엽수 9개 수종에 대한 투습성 평가와 소형 벽체 구조 제작을 통한 투습성 평가를 하고자 하였다. 또한, 투습성 개선을 위해 폐자재인 bottom ash를 흡습제로 투입한 소형 벽체를 제작하여 투습성을 평가하였다. 그 결과, Sd 값에 의한 투습성 평가 결과는 다음과 같다. ① 국산 침엽수 9개 수종 중 Abies holiphylla(잣나무), Picea jezoensis(가문비나무), Ginkgo biloba(은행나무), Pinus koraiensis(잣나무) and Pinus rigida(리기다 소나무)는 투습 성능을 나타내는 것을 확인하였다. ② 이를 이용하여 벽체 구조 제작 시 반투습 성능을 나타냄을 평가하였다. ③ 또한, Bottom ash를 투입한 소형 벽체 구조를 제작하여 투습성 개선 효과를 평가한 결과, Pinus koraiensis(잣나무)의 Sd 값이 1.63으로 나타나, 8개 타 수종보다 우수함을 확인하였다.

Keywords

References

  1. Bio-drywood. 2018. http://www.bio-drywood.com.
  2. Chun, S.K. 2017. Capillary Flow in Different Cells of Larix Kaempferi, Betula Davurica, Castanea crenata. Journal of the Korea Furniture Society 28(1): 88-93.
  3. Flynn, K.A. 1995. A review of the permeability, fluid flow, and anatomy of spruce (Piceaspp.). Wood and Fiber Science 27(3): 278-284.
  4. Han, Y.J. 2014. Unsteady state analysis of moisture transfer and drying stress development in red pine wood. Ph.D. Thesis, Seoul National University, Korea.
  5. Jang, S.J., Wi, S.H., Lee, J.G., Lee, H.Y., Cho, H.M., Kim, S.M. 2017. Analysis of Cooling and Heating Energy Demands of Wooden Houses with Crosslaminated Timber (CLT) Using Domestic Plywood as Core Materials. Journal of the Korean Society of Living Environmental System 24(6): 752-759. https://doi.org/10.21086/ksles.2017.12.24.6.752
  6. Jang, Y.S., Shin, H.K., Kim, S.J., Han, Y.J., Kim, M.J., Eon, C.D., Lee, Y.G., Shim, K.B. 2017. Evaluation of Drying Properties and Yields of Domestic Quercus Species for Enhancing Utilization. Journal of the Korean Wood Science and Technology 45(5): 622-628. https://doi.org/10.5658/WOOD.2017.45.5.622
  7. Kang, C.W., Kim N.H., Kim, B.R., Kim, Y.S., Byeon H.S., So, W.T., Yeo, H.M., Oh, S.W., Lee, W.H., Lee, H.H. 2008. Wood Physics & Epidemiology, Hyangmunsa. Seoul. Korea. 82-83.
  8. Kang, C.W., Jang, S.S., Kang, H.Y., Li, C. 2019. Sound Absorption Rate and Sound Transmission Loss of CLT Wall Panels Composed of Larch Squre Timber Core and Plywood Cross Band. Journal of the Korean Wood Science and Technology 47(1): 33-39. https://doi.org/10.5658/WOOD.2019.47.1.33
  9. Kang, Y.J., Lee, J.H., Lee, H.Y., Kim, S.M. 2017. Heating and Cooling Energy Demand Evaluating of Standard Houses According to Layer Component of Masonry, Concrete and Wood Frame Using PHPP. Journal of the Korean Wood Science and Technology 45(1): 1-11. https://doi.org/10.5658/WOOD.2017.45.1.1
  10. Kim, H.J., Lee, K.S., Cho, J.K., Lee, J.B., Roh, H.R., Yun, H.S. 2011. Reduction Effect of VOCs and Formaldehyde Using Auto Bake-Out System. Applied Chemistry for Engineering 22(3): 291-295.
  11. Kim, J.M., Kwak, E.G., Cho, S.H., Kang, C. 2009. Decision of optimized Mix Design for Lightweight Foamed Concrete Using Bottom ash by Statistical Procedure. Journal of the Korea Concrete Institute 21(1): 3-11. https://doi.org/10.4334/JKCI.2009.21.1.003
  12. Kim, N.H., Hwang, W.J., Kwon, G.J., Kwon, S.M. 2004. Properties of Charcoal-Packed Wood panel. Journal of the Korea furniture Society 15(1): 9-16.
  13. Lee, H.W., Jang, S.S. 2019. Thermal Resistance and Condensation in the Ligth-frame Timber Wall Structures with Various Composition of Insulation Layers. Journal of the Korean Wood Science and Technology 47(4): 533-542. https://doi.org/10.5658/wood.2019.47.4.533
  14. Lee, M., Park, S.B., Byeon, H.S., Kim, J.I. 2014. Developing of Sound Absorption Composite Boards Using Carbonized Medium Density Fiberboard. Journal of the Korean Wood Science and Technology 42(6): 714-722. https://doi.org/10.5658/WOOD.2014.42.6.714
  15. Lee, W.H., Kim, B.R. 1992. Behavior of Moisture Transmission in Earlywood and Latewood for Cryptomeria japonica: Difference of Moisture Transmission Behavior and Calculation of the Vapor Permeability. Journal of the Korean Wood Science and Technology 20(3): 21-27.
  16. Lee, W.H. 1992. Moisture Transfer and Velocity of Moisture Transmission by Wood in Steady State. Current Research on Agriculture and Life Sciences 10: 41-47.
  17. Lee, W.H. 1996. Experimental Examinations on the Phenomenon of Transfer and Moisture Diffusion in Wood. Journal of the Korean Wood Science and Technology 24(1): 75-80.
  18. Lim, H.A., Oh, S.W., Kang, J.H. 2006. Effect of Functional Hanji Using Wood Ceramics on Indoor Humidity Control. Journal of Korea Technical Association of the Pulp and Paper Industry 38(2): 35-42.
  19. Maeng, J.H., Kim, T.Y., Suh, D.H. 2014. Minimizing Environmental Impact in Accordance with the TPP ash Management(I). Korea Environment Institute.
  20. Ministry of Environment. 2001. Exposure Assessment Guide.
  21. Moon, J.W., Oh, J.K., Lee, T.G. 2012. A research of Bottom ash as a Lightweight Vegetation Block to Take Advantage of the Mixing Ratio. Journal of the KIEAE 12(2): 125-129.
  22. Park, S.H., Beak, E.S. 2015. A Study on the Combustion Characteristics of Wood According to Flame Resistant Treat. Fire Science and Engineering 29(1): 12-18. https://doi.org/10.7731/KIFSE.2015.29.1.012
  23. Petty, J.A. 1970. Permeability and structure of the wood of Sitkaspruce. Proceedings of the Royal Society of London B 175: 149-166.
  24. Siau, J.F. 1984. Transport processes in wood. Springer Science & Business Media. New York.
  25. Toyoshima, Isao., Suzuki, Yoshihito. 2016. Development of low cost wood drying technology. Aichi Prefectural Forest and Technology Center Report No.53.
  26. Yang, S.M., Kwon, J.H., Kim, P.L., Kang, S.G. 2020. Analysis of Heat Transfer Characteristics by Material Based on Closed Conditions Using Acrylic Hemisphere (II):Comparison by Type of Building Structural Materials. Journal of the Korean Wood Science and Technology 48(5): 710-721. https://doi.org/10.5658/WOOD.2020.48.5.710
  27. Yang, S.M., Lee, H.J., Kang, S.G. 2020. Analysis of Heat Transfer Characteristics by Material Based on Closed Conditions Using Acrylic Hemisphere(I): Comparison of Interior Finishing Materials. Journal of the Korean Wood Science and Technology 48(5): 710-721. https://doi.org/10.5658/WOOD.2020.48.5.710
  28. Yoo, D.W., Lee, T.G. 2019. Analysis of Energy Performance and Structure of Wooden Passive Houses Using CLT in Overseas. KIEAE Journal 19(5): 101-107.
  29. Yoo, Y., Lee, S.M., Seo, S.C., Choung, J.T., Lee, S.J., Park, S.J., Park, C.W. 2011. The Clinical and Immunological Effects of Forest Camp on Childhood Environmental Diseases. Journal of the Korean Institute of Forest Recreation and Welfare 15(2): 85-93. https://doi.org/10.34272/forest.2011.15.2.010