Properties of an Adhesive for Structural Glass Applications

Andreas Breum Ølgaard, Jens Henrik Nielsen, John Forbes Olesen and Henrik Stang, Technical University of Denmark

The application of epoxy resin as an adhesive in the construction of structural glass members requires knowledge of the mechanical properties of the resin as a bulk material as well as the adhesive properties. This study is concerned with the determination of the bulk material properties for a specific epoxy resin, as well as the adhesive properties in terms of shear carrying capacity. For the study of the bulk material properties a series of experiments have been performed on axisymmetric dog-bone specimens subject to uni-axial tensile action. Especially a number of creep tests have been performed. The short and long term viscoelastic characteristics have been extracted in terms of normalized creep/relaxation functions and the influence of curing time on these properties has been established. For the study of the adhesive properties a series of experiments have been performed on a ring shaped adhesive interlayer between a steel cylinder and the face of a glass pane. The interlayer was subject to a combination of normal and shear stresses, and the failure surface for combined actions was established.

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