Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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The Swelling Response of Loblolly Pine (Pinus Taeda) Juvenile Wood to Water Submersion

  • Via, Brain K. (School of Renewable Natural Resources, Louisiana State University Agricultural Center) ;
  • Hartley, Ian D. (Forestry Program, University of Northern British Columbia) ;
  • Shupe, Todd F. (School of Renewable Natural Resources, Louisiana State University Agricultural Center) ;
  • Lee, Sang Yeob (School of Renewable Natural Resources, Louisiana State University Agricultural Center) ;
  • Lee, Byung G. (Department of Natural Resources, Yeungnam University)
  • Received : 2004.04.30
  • Accepted : 2004.06.15
  • Published : 2005.03.25
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Abstract

Juvenile and transitional-juvenile wood samples from loblolly pine (Pinus taeda) were immersed in water to investigate longitudinal and tangential swelling properties. Increment cores from twenty-six loblolly pine trees were sampled at breast height (1.37 m). Earlywood rings 5 and 9 were separated from the core, extracted, oven-dried and immersed in water at room temperature. The variance in longitudinal swell was significant for ring 5 compared to ring 9 (p = 0.001). It was found that tangential swell might predict longitudinal swelling of juvenile wood at ring 9 but not at ring 5. Poor correlation in ring 5 suggests that swelling response in younger juvenile wood may differ. The swell response at ring 5 did not follow the shrinkage models discussed in the literature while ring 9 adhered to the expected curve.

Keywords

References

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