STP1054: Spacer Geometry Effects on Strength of Insulating Glass Joints for Structural Glazing Applications

    Sandberg, LB
    Associate professor and graduate research assistant, Michigan Technological University, Houghton, MI

    Carbary, TM
    Associate professor and graduate research assistant, Michigan Technological University, Houghton, MI

    Pages: 7    Published: Jan 1989


    Abstract

    Test results are given for specimens that model insulating glass joints used in structural glazing applications. Three spacer geometries were investigated. The first was a rectangular spacer, resulting in a basic, three-sided adhesion joint. The second was a veeshaped spacer with the point toward the outer edge of the joint. The third was tee-shaped with the stem projecting outward. All specimens were made with a two-part silicone structural sealant. Static tensile strength rankings, in ascending order, are rectangular, vee, tee, and tee with bond breaker. The bond breaker provided only minor improvements for the tee spacer. The data showed a significant gain in strength with increased joint depth. These results are compared and discussed.

    Keywords:

    sealants, structural, silicones, insulating, glass, spacers, tensile strength, joints, geometry


    Paper ID: STP22990S

    Committee/Subcommittee: C24.84

    DOI: 10.1520/STP22990S


    CrossRef ASTM International is a member of CrossRef.