Mechanical properties of adhesive-free cross-laminated timber

Bo-Han Xu*, Sheng-Du Zhang, Yan-Hua Zhao, Abdelhamid Bouchaïr, Ben Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

In order to reduce the use of adhesives, the development of adhesive-free engineered wood products is one of the research focuses in timber structures. This paper studies the mechanical properties of cross-laminated timber beams connected by densified wood (DW) dowels. Four-point bending tests were performed to study the influence of the arrangement and number of DW dowels on the bending strength and effective bending stiffness of the dowelled cross-laminated timber (DCLT) beams with three layers. The modified planar shear
test was adopted to determine the effective shear properties of the DCLT. Cross-laminated timber (CLT) beams were also tested as references. Although the bending and shear properties of the DCLT were lower than those of the CLT, the DCLT showed a significantly larger ductility. The gamma method is promising for determining the effective bending stiffness of the DCLT using the effective shear modulus obtained from the shear test.
Original languageEnglish
Article number04022135
Number of pages7
JournalASCE Journal of Structural Engineering
Volume148
Issue number9
Early online date8 Jul 2022
DOIs
Publication statusPublished - Sep 2022

Keywords

  • adhesive-free cross-laminated timber
  • dowelled cross-laminated timber (DCLT)
  • densified wood (DW) dowel
  • bending strength
  • effective bending stiffness
  • effective shear modulus

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Science(all)
  • Building and Construction
  • Civil and Structural Engineering

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