Mechanical properties of laminated bamboo designed for curvature

Bhavna Sharma, Damian Eley, Oscar Emanuel, Charley Brentnall

    Research output: Contribution to journalArticlepeer-review

    23 Citations (SciVal)

    Abstract

    Laminated bamboo is growing in potential as a novel construction material due to the need to lower the carbon impact of the built environment. The material utilises raw bamboo in an engineered composite to create a standardised prismatic section. The present study investigated the mechanical properties, as well as the performance under sustained load, of laminated bamboo sections which had undergone a secondary glue laminating process to facilitate the forming of curved profiles. Small and structural scale testing methods were used to evaluate the properties under varying service conditions representative of both internal and external environments. The results indicated that the material properties of the test pieces were generally consistent with previous studies. The long-term behaviour in bending was generally found to be consistent with or better than expectation based on the Eurocode 5 duration of load and creep factors applicable to solid or glued laminated timber, however, appear to be conservative when applied to laminated bamboo. In contrast, the Eurocode 5 torsional shear deformation factors appear to be unconservative for laminated bamboo. Further study is required to determine long-term performance in both bending and shear, in particular with respect to varying service class.

    Original languageEnglish
    Article number123937
    JournalConstruction and Building Materials
    Volume300
    Early online date25 Jun 2021
    DOIs
    Publication statusPublished - 20 Sept 2021

    Bibliographical note

    Funding Information:
    The work was completed with funding from the Zoological Society of London and is gratefully acknowledged. The experimental testing was completed with support of the Technical Staff and facilities in the Structures Laboratory at the University of Bath, the Technical Staff and facilities in the Structures Research Laboratory in the Engineering Department and the Centre for Natural Material Innovation at the University of Cambridge and is gratefully acknowledged.

    Keywords

    • Bamboo
    • Curvature
    • Laminated bamboo
    • Mechanical properties

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • General Materials Science

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