Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Samuel L. Zelinka; Ken Sullivan; Shiling Pei; Noah Ottum; Nathan J. BechleDouglas R. RammerLaura E. Hasburgh
    Date: 2019
    Source: International Journal of Adhesion and Adhesives. 95: 102436.
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    PDF: Download Publication  (1.0 MB)

    Description

    This study is part of a research project examining fire risk in cross aminated timber (CLT) bui dings. “De amination”, a major concern for CLT fire safety, can occur when the adhesive bondline fails in the pane before it chars which can lead to additional fuel for fire regrowth. Understanding the mechanical strength and stiffness of the adhesive bond under elevated temperature is one of the fundamenta steps towards better understanding delamination. In this study, the materia properties of wood and wood adhesive bonds are studied at various temperatures levels below the char temperature of wood (300 °C) to characterize the loss in strength and stiffness as a function of temperature. Four adhesives, three of which are commonly used in CLT production, were studied: two formulations made from polyurethane, one made from melamine formaldehyde, and one made from pheno-resorcinol formaldehyde. Tests were performed in a half-lap shear joint and compared against a specimen with identical geometry made from a solid piece of wood with no joint. The pheno-resorcinol formaldehyde joint had approximately the same shear strength as solid wood at all temperatures, whereas the other adhesives had noticeable reduction in strength at high temperatures. The method presented herein is unique among other CLT adhesive tests as it measures the performance of the adhesive under heat and load.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Zelinka, Samuel L.; Sullivan, Ken; Pei, Shiling; Ottum, Noah; Bechle, Nathan J.; Rammer, Douglas R.; Hasburgh, Laura E. 2019. Small scale tests on the performance of adhesives used in cross laminated timber (CLT) at elevated temperatures. International Journal of Adhesion and Adhesives. 95: 102436.

    Cited

    Google Scholar

    Keywords

    Cross-laminated timber, adhesives, fire risk, delamination, elevated temperatures

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/60628