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  • Behavior of adhesively bonded engineered wood – wood chip concrete composite decks : experimental and analytical studies
    Fu, Qiuni ...
    In this study, epoxy and polyurethane (PUR) were used to glue five medium-sized (i.e. length of 2300 mm and width of 215 mm) engineered timber-concrete composite decks to investigate their composite ... action and flexural behavior under four-point bending tests. Cross laminated timber (CLT), laminated veneer lumber (LVL), plain concrete (PC) and an innovative type of wood chip concrete (WCC) were used. The five specimens were WCC-Epoxy-LVL, WCC-PUR-LVL, WCC-Epoxy-CLT, WCC-PUR-CLT and PC-Epoxy-LVL. All the specimens showed linear load-deformation responses approaching the final failure. Ultimately, all the decks failed by either compressive crushing of concrete or wood parts, rather than the debonding at the wood-concrete interface, indicating a good composite action of the timber-concrete composite decks. Compared with the specimens made of PC, the flexural stiffness and load-carrying capacity of the specimens made of WCC reduced by around 20%. Nevertheless, the thermal conductivity of WCC could be reduced by 30%, interpolated from the chart in an independent study. Lastly, the authors analytically predicted the effective bending stiffness and mid-span deflection for each specimen, considering the shear flexibility of transvers layers (stressed perpendicular to fiber direction) in engineered wood as partial composite action and assuming a perfectly rigid bond at wood-concrete interface.
    Source: Construction & building materials. - ISSN 0950-0618 (Vol. 247, art. 118578, 2020, str. 1-10)
    Type of material - article, component part ; adult, serious
    Publish date - 2020
    Language - english
    COBISS.SI-ID - 150807043

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S0950061820305833?pes=vor
    https://doi.org/10.1016/j.conbuildmat.2020.118578
    DOI

source: Construction & building materials. - ISSN 0950-0618 (Vol. 247, art. 118578, 2020, str. 1-10)

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