Abstract

Novel cross-laminated bamboo panels comprising three and five layers (G-XLam3 and G-XLam5) were tested in compression along the main (0º) and the transverse (90º) direction. Linear variable displacement transducers (LVDTs) and non-contact 3D digital image correlation (DIC) measuring techniques were used separately to measure deformation in the elastic region and the elastic moduli were derived. Elastic modulus values obtained using LVDTs exhibited a good match with analytically predicted values. By contrast, elastic values obtained by the DIC method were considerably higher and presented a considerable scatter of results. For instance, Ep(c,0) for GXLam3 and G-XLam5 panels were 17.22GPa and 15.67Gpa and 14.86GPa and 12.48GPa, from DIC and LVDT respectively. In general, G-XLam panels with a fifth of the cross-sectional thickness and twice the density of analogous cross-laminated timber (CLT) exhibited an approximate two-fold increase in Ep(c,0) and Ep(c,90). Overall, this research provides guidelines for the assessment and standardisation of testing procedures for similar engineered bamboo products (EBPs) using contact and non-contact methods and highlights the potential of using G-XLam panels in stiffness
driven applications and in combination with wood for structural purposes.
Original languageEnglish
Pages (from-to)284-295
Number of pages12
JournalProceedings of the Institution of Civil Engineers: Construction Materials
Volume172
Issue number6
Early online date5 May 2017
DOIs
Publication statusPublished - 31 Dec 2019

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Keywords

  • Bamboo
  • Guadua
  • Natural Building Material
  • Laminated bamboo
  • Laminated composites
  • Cross Laminated Timber (CLT)
  • Digital Image Correlation

ASJC Scopus subject areas

  • Materials Science(all)

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