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Structural Performance of Finger-Jointed Lumber with Different Joint Configurations

  • Lee, Sang-Joon (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute) ;
  • Eom, Chang-Deuk (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute) ;
  • Kim, Kwang-Mo (Division of Wood Engineering, Department of Forest Resources Utilization, Korea Forest Research Institute)
  • Received : 2011.03.02
  • Accepted : 2011.03.14
  • Published : 2011.03.25

Abstract

Three different finger-jointed lumbers which have different geometric features and adhesives were manufactured and studied in this study. Larch and pitch pine lumbers with and without preservative treatment were used. Bending MOE was measured as the preliminary investigation for grouping the specimen. After the finger, bending MOE of two wood species without preservative treatment shows over 97% property of the control group. The tensile modulus also shows almost same property after the finger joint. And it is found out that the preservative treatment induce little effect on bending and tensile MOE. Based on this result, high performance of examined finger-jointed lumber can be found out. However, tensile strength decreased around 20% which would be induced by the crack along the root of the finger which is formed near the edge during manufacturing stage. And finger-jointed lumber with preservative treatment even shows higher decrement of the tensile strength with higher wooden part failure mode.

Keywords

References

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Cited by

  1. Performance of Structural Glulam Laminated with CuAz-3 Preservative Treated Lumber vol.39, pp.6, 2011, https://doi.org/10.5658/WOOD.2011.39.6.521