The Effects of Number and Location of Finger Joints on the Bending Strength of Glue Laminated Wood for Green Wood Building

핑거접합부의 수량 및 배치가 생태목조건축용 집성재의 휨강도에 미치는 영향

  • So, Won-Tek (Insti. of Ag. Sci. and Tech., Dept. of Forest Products and Technology, Chonnam Nat'l Univ.)
  • 소원택 (전남대학교 임상공학과, 농업과학기술연구소)
  • Published : 2007.02.25

Abstract

This experiment was carried out to investigate the effects of number and location of finger joints on the bending strength of glue-laminated lumbers. Urea resin adhesives were used in this experiment and the resin content was 70% for cold pressing. The lamina were edge-jointed and end-jointed. The specimen were composed of one or three layers. The obtained results are summarized as follows; The effects of finger joints on the decrease of bending strength of glue laminated woods were different according to the number and location of finger joints. The decrease of MOR was highest on the middle position of laminated woods. The effects of several arrangements of finger joints on the bending strength of glue laminated woods showed on Figure 7 and 8. The variance of thickness-laminating on the bending strength of glue laminated woods were larger than those of width-laminating.

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