Poplar wood (Populus tremula L.) findings of finger - jointed timber
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2016, Vol 96, Issue 1
Abstract
Poplar wood (Populus tremula L.) findings of finger-jointed timber. Poplar wood can be classified into strength classes C14- C40 from the construction timber quality point of view. Due to the lack of a spruce construction timber, poplar wood can be used instead. Length extension of lamells with finger-joints is required for the construction timber. Poplar timber with finger joints was tested. Finger length lj = 22 mm and gluing with XILOBOND T FJ 10 (w = 12%) were according to EN 14 080:2013. Testing samples with crossection 26x38 mm were tested according to EN 408 for bending strength (MOR) and modulus of elasticity (MOE) in horizontal and vertical orientation of finger joints. Results were compared with reference samples. Bending strength of finger-jointed samples decreased comparing to reference samples. Modulus of elasticity was higher in compare with reference samples in both directions (horizontal, vertical) from 36 to 53%. Similar profiles can be used in truss production with elements connected by GANG-NAIL. Theoretical and experimental analyses are required according to EN 14 080:2013. Keywords:
Authors and Affiliations
ALENA ROHANOVÁ, PETER KRIŠŠÁK
Keywords
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